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<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001285829</cik>
        <entityName>CARDIAC DIMENSIONS INC</entityName>
        <issuerAddress>
            <street1>5540 LAKE WASHINGTON BLVD. NE</street1>
            <city>KIRKLAND</city>
            <stateOrCountry>WA</stateOrCountry>
            <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
            <zipCode>98033</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>425-605-5910</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
        </yearOfInc>
    </primaryIssuer>

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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Frederick</firstName>
                <middleName>A.</middleName>
                <lastName>Stewart</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Erik</firstName>
                <middleName>A.</middleName>
                <lastName>Wypych</lastName>
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                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>David</firstName>
                <lastName>Reuter</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gary</firstName>
                <middleName>D.</middleName>
                <lastName>Swinford</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
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                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Paul</firstName>
                <lastName>Cornelison</lastName>
            </relatedPersonName>
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                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <lastName>Conta</lastName>
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                <street1>c/o Cardiac Dimensions, Inc.</street1>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Nawzer</firstName>
                <lastName>Mehta</lastName>
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            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gerry</firstName>
                <lastName>Brunk</lastName>
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            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>W.</firstName>
                <middleName>James</middleName>
                <lastName>Fitzsimmons</lastName>
            </relatedPersonName>
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                <street1>c/o Cardiac Dimensions</street1>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Richard</firstName>
                <middleName>O.</middleName>
                <lastName>Martin</lastName>
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            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Nathan</firstName>
                <lastName>Every</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
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                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Niamh</firstName>
                <lastName>Pellegrini</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Michael</firstName>
                <lastName>Sweeney</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
                <street2>5540 Lake Washington Blvd. NE</street2>
                <city>Kirkland</city>
                <stateOrCountry>WA</stateOrCountry>
                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Kurt</firstName>
                <lastName>Wheeler</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Cardiac Dimensions, Inc.</street1>
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                <stateOrCountryDescription>WASHINGTON</stateOrCountryDescription>
                <zipCode>98033</zipCode>
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            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
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    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other Health Care</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-11-05</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isOptionToAcquireType>true</isOptionToAcquireType>
            <isSecurityToBeAcquiredType>true</isSecurityToBeAcquiredType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>15472456</totalOfferingAmount>
            <totalAmountSold>6446863</totalAmountSold>
            <totalRemaining>9025593</totalRemaining>
            <clarificationOfResponse>Total Offering Amount includes exercise price for warrants issued and to be issued, which exercise price has not been received, and may never be received.</clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>17</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>CARDIAC DIMENSIONS INC</issuerName>
                <signatureName>/s/ Erik A. Wypych</signatureName>
                <nameOfSigner>Erik A. Wypych</nameOfSigner>
                <signatureTitle>Chief Financial Officer</signatureTitle>
                <signatureDate>2010-11-08</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
