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</LabelSeparator><Level>2</Level><ElementName>us-gaap_BasisOfAccounting</ElementName><ElementPrefix>us-gaap_</ElementPrefix><IsBaseElement>true</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="P01_01_2013To06_30_2013" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>              &lt;table border="0" style="clear:both;width:100%; table-layout:fixed;"&gt;  &lt;tr&gt;  &lt;td&gt;&lt;/td&gt;  &lt;/tr&gt;  &lt;/table&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "&gt;  &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt; FONT-SIZE: 10pt"&gt;  &lt;table style="clear:both;WIDTH: 100%; BORDER-COLLAPSE: collapse"  border="0" cellspacing="0" cellpadding="0" width="100%"&gt;  &lt;tr&gt;  &lt;td style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; WIDTH: 7%; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in"   valign="top" width="7%"&gt;  &lt;div style="clear:both;MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="COLOR: black; FONT-SIZE: 10pt"&gt;1.&lt;/font&gt;&lt;/b&gt;&lt;font style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;&lt;/div&gt;  &lt;/td&gt;  &lt;td style="BORDER-BOTTOM: #f0f0f0; BORDER-LEFT: #f0f0f0; PADDING-BOTTOM: 0in; BACKGROUND-COLOR: transparent; PADDING-LEFT: 0in; WIDTH: 93%; PADDING-RIGHT: 0in; BORDER-TOP: #f0f0f0; BORDER-RIGHT: #f0f0f0; PADDING-TOP: 0in"   valign="top" width="93%"&gt;  &lt;div style="clear:both;MARGIN: 0in 0in 0pt"&gt;&lt;b&gt;&lt;font style="COLOR: black; FONT-SIZE: 10pt"&gt;Basis of  Presentation&lt;/font&gt;&lt;/b&gt;&lt;font style="FONT-SIZE: 10pt"&gt;&lt;/font&gt;&lt;/div&gt;  &lt;/td&gt;  &lt;/tr&gt;  &lt;/table&gt;  &lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt 0.5in"   align="justify"&gt;&lt;font style="FONT-SIZE: 10pt"&gt;The accompanying  unaudited interim financial statements have been prepared in  accordance with generally accepted accounting principles and the  rules of the U.S. Securities and Exchange Commission, and should be  read in conjunction with the audited financial statements and notes  thereto contained in the Annual Report on Form 10-K for Positron  Corporation (the &amp;#8220;Registrant&amp;#8221; or the  &amp;#8220;Company&amp;#8221;) for the period ending June 30, 2013. In the  opinion of management, all adjustments, consisting of normal  recurring adjustments, necessary for a fair presentation of  financial position, results of operations and cash flows for the  interim periods presented have been reflected herein. The results  of operations for interim periods are not necessarily indicative of  the results to be expected for the full year. Notes to the  financial statements which would substantially duplicate the  disclosures contained in the audited financial statements for the  most recent fiscal year ended December 31, 2012, as reported in the  Form 10-K, have been omitted.&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt 0.5in"   align="justify"&gt;&lt;font style="FONT-SIZE: 10pt"&gt;In preparing the  interim unaudited consolidated financial statements, management was  required to make certain estimates and assumptions that affect the  reported amounts of assets, liabilities, revenues, expenses and  related disclosures at the financial reporting date and throughout  the periods being reported upon. Certain of the estimates result  from judgments that can be subjective and complex and consequently  actual results may differ from these estimates.&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0in 0in 0pt"&gt;  &lt;font style="FONT-SIZE: 10pt"&gt;&amp;#160;&lt;/font&gt;&lt;/div&gt;    &lt;div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0in 0in 0pt"   align="justify"&gt;&lt;font style="FONT-SIZE: 10pt"&gt;All significant  intercompany balances and transactions have been  eliminated.&lt;/font&gt;&lt;/div&gt;  &lt;/div&gt;        </NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure for the basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).</ElementDefenition><ElementReferences>No definition available.</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Basis of Presentation</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>Basis of Presentation</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.positron.com/role/BasisOfPresentation</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
