<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>375</ContextCount>
  <ElementCount>371</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>true</FootnotesReported>
  <SegmentCount>157</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>8</UnitCount>
  <MyReports>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>000 - Document - Document And Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-document-and-entity-information</Role>
      <ShortName>Document And Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals</Role>
      <ShortName>Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>003 - Statement - Condensed Consolidated Statements of Operations (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-condensed-consolidated-statements-of-operations-unaudited-</Role>
      <ShortName>Condensed Consolidated Statements of Operations (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>004 - Statement - Condensed Consolidated Statements of Stockholders' Equity (Unaudited)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-condensed-consolidated-statements-of-stockholders-equity-unaudited-</Role>
      <ShortName>Condensed Consolidated Statements of Stockholders' Equity (Unaudited)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>005 - Statement - Condensed Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-condensed-consolidated-statements-of-cash-flows</Role>
      <ShortName>Condensed Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>006 - Disclosure - Note 1 - Organization and Nature of Operations</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-1-organization-and-nature-of-operations</Role>
      <ShortName>Note 1 - Organization and Nature of Operations</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>007 - Disclosure - Note 2 - Summary of Significant Accounting Policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>008 - Disclosure - Note 3 - Inventories</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories</Role>
      <ShortName>Note 3 - Inventories</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>009 - Disclosure - Note 4 - Property and Equipment</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment</Role>
      <ShortName>Note 4 - Property and Equipment</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>010 - Disclosure - Note 5 - Intangible Assets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets</Role>
      <ShortName>Note 5 - Intangible Assets</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>011 - Disclosure - Note 6 - Accrued Expenses</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-6-accrued-expenses</Role>
      <ShortName>Note 6 - Accrued Expenses</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>012 - Disclosure - Note 7 - Notes Payable</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-7-notes-payable</Role>
      <ShortName>Note 7 - Notes Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>013 - Disclosure - Note 8 - Royalties Payable</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable</Role>
      <ShortName>Note 8 - Royalties Payable</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>014 - Disclosure - Note 9 - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases</Role>
      <ShortName>Note 9 - Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>015 - Disclosure - Note 10 - Net Loss Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-10-net-loss-per-share</Role>
      <ShortName>Note 10 - Net Loss Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>016 - Disclosure - Note 11 - Equity Offerings</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings</Role>
      <ShortName>Note 11 - Equity Offerings</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>017 - Disclosure - Note 12 - Preferred Stock</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock</Role>
      <ShortName>Note 12 - Preferred Stock</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>018 - Disclosure - Note 13 - Stock-based Compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation</Role>
      <ShortName>Note 13 - Stock-based Compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>019 - Disclosure - Note 14 - Asset Acquisition</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-14-asset-acquisition-</Role>
      <ShortName>Note 14 - Asset Acquisition</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>020 - Disclosure - Note 15 - Income Taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-15-income-taxes</Role>
      <ShortName>Note 15 - Income Taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>021 - Disclosure - Note 16 - Commitments and Contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-16-commitments-and-contingencies</Role>
      <ShortName>Note 16 - Commitments and Contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>22</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>022 - Disclosure - Note 17 - Related Parties</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties</Role>
      <ShortName>Note 17 - Related Parties</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>23</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>023 - Disclosure - Note 18 - Subsequent Events</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-18-subsequent-events</Role>
      <ShortName>Note 18 - Subsequent Events</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>24</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>25</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>995470 - Disclosure - Significant Accounting Policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-significant-accounting-policies-policies</Role>
      <ShortName>Significant Accounting Policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>995471 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-tables</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>995472 - Disclosure - Note 3 - Inventories (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories-tables</Role>
      <ShortName>Note 3 - Inventories (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>995473 - Disclosure - Note 4 - Property and Equipment (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment-tables</Role>
      <ShortName>Note 4 - Property and Equipment (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>995474 - Disclosure - Note 5 - Intangible Assets (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets-tables</Role>
      <ShortName>Note 5 - Intangible Assets (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>995475 - Disclosure - Note 6 - Accrued Expenses (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-6-accrued-expenses-tables</Role>
      <ShortName>Note 6 - Accrued Expenses (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-6-accrued-expenses</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>995476 - Disclosure - Note 8 - Royalties Payable (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable-tables</Role>
      <ShortName>Note 8 - Royalties Payable (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>995477 - Disclosure - Note 9 - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-tables</Role>
      <ShortName>Note 9 - Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-9-leases</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>995478 - Disclosure - Note 11 - Equity Offerings (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings-tables</Role>
      <ShortName>Note 11 - Equity Offerings (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>995479 - Disclosure - Note 12 - Preferred Stock (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock-tables</Role>
      <ShortName>Note 12 - Preferred Stock (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>995480 - Disclosure - Note 13 - Stock-based Compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-tables</Role>
      <ShortName>Note 13 - Stock-based Compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>995481 - Disclosure - Note 17 - Related Parties (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties-tables</Role>
      <ShortName>Note 17 - Related Parties (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>995482 - Disclosure - Note 1 - Organization and Nature of Operations (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-1-organization-and-nature-of-operations-details-textual</Role>
      <ShortName>Note 1 - Organization and Nature of Operations (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-1-organization-and-nature-of-operations</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>995483 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-details-textual</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-tables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>995484 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Segment Reporting (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-segment-reporting-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Segment Reporting (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>995485 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Fair Value Measurements (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-fair-value-measurements-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Fair Value Measurements (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>41</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>995486 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Unobservable Inputs (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-unobservable-inputs-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Unobservable Inputs (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>42</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>995487 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Change in Fair Value of Royalties Payable (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-change-in-fair-value-of-royalties-payable-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Change in Fair Value of Royalties Payable (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>43</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>995488 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Useful Life of Property and Equipment (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-useful-life-of-property-and-equipment-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Useful Life of Property and Equipment (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>44</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>995489 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-2-summary-of-significant-accounting-policies-disaggregation-of-revenue-details</Role>
      <ShortName>Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>45</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>995490 - Disclosure - Note 3 - Inventories (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories-details-textual</Role>
      <ShortName>Note 3 - Inventories (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories-tables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>995491 - Disclosure - Note 3 - Inventories - Schedule of Inventories (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-3-inventories-schedule-of-inventories-details</Role>
      <ShortName>Note 3 - Inventories - Schedule of Inventories (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>47</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>995492 - Disclosure - Note 4 - Property and Equipment (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment-details-textual</Role>
      <ShortName>Note 4 - Property and Equipment (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment-tables</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>995493 - Disclosure - Note 4 - Property and Equipment - Schedule of Property and Equipment, Net (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-4-property-and-equipment-schedule-of-property-and-equipment-net-details</Role>
      <ShortName>Note 4 - Property and Equipment - Schedule of Property and Equipment, Net (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>49</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>995494 - Disclosure - Note 5 - Intangible Assets (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets-details-textual</Role>
      <ShortName>Note 5 - Intangible Assets (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets-tables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R51.htm</HtmlFileName>
      <LongName>995495 - Disclosure - Note 5 - Intangible Assets - Summary of Intangible Assets (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets-summary-of-intangible-assets-details</Role>
      <ShortName>Note 5 - Intangible Assets - Summary of Intangible Assets (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>51</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R52.htm</HtmlFileName>
      <LongName>995496 - Disclosure - Note 5 - Intangible Assets - Estimated Future Amortization Expense (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-5-intangible-assets-estimated-future-amortization-expense-details</Role>
      <ShortName>Note 5 - Intangible Assets - Estimated Future Amortization Expense (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>52</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R53.htm</HtmlFileName>
      <LongName>995497 - Disclosure - Note 6 - Accrued Expenses - Schedule of Accrued Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-6-accrued-expenses-schedule-of-accrued-expenses-details</Role>
      <ShortName>Note 6 - Accrued Expenses - Schedule of Accrued Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>53</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R54.htm</HtmlFileName>
      <LongName>995498 - Disclosure - Note 7 - Notes Payable (Details Textual)</LongName>
      <ReportType>Notes</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-7-notes-payable-details-textual</Role>
      <ShortName>Note 7 - Notes Payable (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-7-notes-payable</ParentRole>
      <Position>54</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R55.htm</HtmlFileName>
      <LongName>995499 - Disclosure - Note 8 - Royalties Payable (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable-details-textual</Role>
      <ShortName>Note 8 - Royalties Payable (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable-tables</ParentRole>
      <Position>55</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R56.htm</HtmlFileName>
      <LongName>995500 - Disclosure - Note 8 - Royalties Payable - Sales-based Royalties (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-8-royalties-payable-salesbased-royalties-details</Role>
      <ShortName>Note 8 - Royalties Payable - Sales-based Royalties (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>56</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R57.htm</HtmlFileName>
      <LongName>995501 - Disclosure - Note 9 - Leases (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-details-textual</Role>
      <ShortName>Note 9 - Leases (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-tables</ParentRole>
      <Position>57</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R58.htm</HtmlFileName>
      <LongName>995502 - Disclosure - Note 9 - Leases - Supplemental Information (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-supplemental-information-details</Role>
      <ShortName>Note 9 - Leases - Supplemental Information (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>58</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R59.htm</HtmlFileName>
      <LongName>995503 - Disclosure - Note 9 - Leases - Lease Terms and Discount Rate (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-lease-terms-and-discount-rate-details</Role>
      <ShortName>Note 9 - Leases - Lease Terms and Discount Rate (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>59</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R60.htm</HtmlFileName>
      <LongName>995504 - Disclosure - Note 9 - Leases - Future Lease Payments (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-future-lease-payments-details</Role>
      <ShortName>Note 9 - Leases - Future Lease Payments (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>60</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R61.htm</HtmlFileName>
      <LongName>995505 - Disclosure - Note 9 - Leases - Lease Right-of-use Assets and Lease Liabilities (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-9-leases-lease-rightofuse-assets-and-lease-liabilities-details</Role>
      <ShortName>Note 9 - Leases - Lease Right-of-use Assets and Lease Liabilities (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>61</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R62.htm</HtmlFileName>
      <LongName>995506 - Disclosure - Note 10 - Net Loss Per Share (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-10-net-loss-per-share-details-textual</Role>
      <ShortName>Note 10 - Net Loss Per Share (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-10-net-loss-per-share</ParentRole>
      <Position>62</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R63.htm</HtmlFileName>
      <LongName>995507 - Disclosure - Note 11 - Equity Offerings (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings-details-textual</Role>
      <ShortName>Note 11 - Equity Offerings (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings-tables</ParentRole>
      <Position>63</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R64.htm</HtmlFileName>
      <LongName>995508 - Disclosure - Note 11 - Equity Offerings - Schedule of Warrants or Rights (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings-schedule-of-warrants-or-rights-details</Role>
      <ShortName>Note 11 - Equity Offerings - Schedule of Warrants or Rights (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>64</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R65.htm</HtmlFileName>
      <LongName>995509 - Disclosure - Note 11 - Equity Offerings - Issuance of Warrants (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-11-equity-offerings-issuance-of-warrants-details</Role>
      <ShortName>Note 11 - Equity Offerings - Issuance of Warrants (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>65</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R66.htm</HtmlFileName>
      <LongName>995510 - Disclosure - Note 12 - Preferred Stock (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock-details-textual</Role>
      <ShortName>Note 12 - Preferred Stock (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock-tables</ParentRole>
      <Position>66</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R67.htm</HtmlFileName>
      <LongName>995511 - Disclosure - Note 12 - Preferred Stock - Schedule of Conversions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-12-preferred-stock-schedule-of-conversions-details</Role>
      <ShortName>Note 12 - Preferred Stock - Schedule of Conversions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>67</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R68.htm</HtmlFileName>
      <LongName>995512 - Disclosure - Note 13 - Stock-based Compensation (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-details-textual</Role>
      <ShortName>Note 13 - Stock-based Compensation (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-tables</ParentRole>
      <Position>68</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R69.htm</HtmlFileName>
      <LongName>995513 - Disclosure - Note 13 - Stock-based Compensation - Assumptions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-assumptions-details</Role>
      <ShortName>Note 13 - Stock-based Compensation - Assumptions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>69</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R70.htm</HtmlFileName>
      <LongName>995514 - Disclosure - Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-schedule-of-stock-option-activity-details</Role>
      <ShortName>Note 13 - Stock-based Compensation - Schedule of Stock Option Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>70</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R71.htm</HtmlFileName>
      <LongName>995515 - Disclosure - Note 13 - Stock-based Compensation - Schedule of Restricted Stock Activity (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-schedule-of-restricted-stock-activity-details</Role>
      <ShortName>Note 13 - Stock-based Compensation - Schedule of Restricted Stock Activity (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>71</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R72.htm</HtmlFileName>
      <LongName>995516 - Disclosure - Note 13 - Stock-Based Compensation - Schedule for Share-based Compensation Expenses (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-13-stockbased-compensation-schedule-for-sharebased-compensation-expenses-details</Role>
      <ShortName>Note 13 - Stock-Based Compensation - Schedule for Share-based Compensation Expenses (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>72</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R73.htm</HtmlFileName>
      <LongName>995517 - Disclosure - Note 14 - Asset Acquisition (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-14-asset-acquisition-details-textual</Role>
      <ShortName>Note 14 - Asset Acquisition (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-14-asset-acquisition-</ParentRole>
      <Position>73</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R74.htm</HtmlFileName>
      <LongName>995518 - Disclosure - Note 15 - Income Taxes (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-15-income-taxes-details-textual</Role>
      <ShortName>Note 15 - Income Taxes (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-15-income-taxes</ParentRole>
      <Position>74</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R75.htm</HtmlFileName>
      <LongName>995519 - Disclosure - Note 17 - Related Parties (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties-details-textual</Role>
      <ShortName>Note 17 - Related Parties (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties-tables</ParentRole>
      <Position>75</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R76.htm</HtmlFileName>
      <LongName>995520 - Disclosure - Note 17 - Related Parties - Summary of Related Party Transactions (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-17-related-parties-summary-of-related-party-transactions-details</Role>
      <ShortName>Note 17 - Related Parties - Summary of Related Party Transactions (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>76</Position>
    </Report>
    <Report instance="vtak20250331_10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R77.htm</HtmlFileName>
      <LongName>995521 - Disclosure - Note 18 - Subsequent Events (Details Textual)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catheterprecision.com/20250331/role/statement-note-18-subsequent-events-details-textual</Role>
      <ShortName>Note 18 - Subsequent Events (Details Textual)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.catheterprecision.com/20250331/role/statement-note-18-subsequent-events</ParentRole>
      <Position>77</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>vtak-20250331.xsd</File>
    <File>vtak-20250331_cal.xml</File>
    <File>vtak-20250331_def.xml</File>
    <File>vtak-20250331_lab.xml</File>
    <File>vtak-20250331_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="vtak20250331_10q.htm">vtak20250331_10q.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="924">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="29">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="2">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
