计算机辅助检测在乳腺x线摄影中应用价值的分析

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1、天沣医科火学硕十学位论文percentageconfidenceinterval．ThedesignofthestudyusedsensitivityofbreastcancerandfalsepositiveratetoassesstheperformanceofMammoCAD2．0．Thetotalnumberoffalse—positivemarkspercasewasdeterminedbyaddingthenumberofmicrocalcification(MC)，mass(MA)andlymphnode(LN)marksine

2、achnormalgraphic．Chi-squareanalysiswasusedtocomparethesensitivityofbreastcancer,MCandMAinnormaldenseandnondense．ThenumberofCADmarksinnormaldenseandnondensemammogramswascomparedusingchi-squareanalysis．StatisticalanalysisshowingPvaluesoflessthanO．05wereconsideredstatistically

3、significant．Result：Oofthe415breastcancercases，289casesmanifestasMA，295casesmanifestasMC，108caseswereLNpositivemammographically．Therewere692casestotally．CADdetected271(93．77％)MCCanCercases．249(84．41％)MACanCercasesand91(84．26％)LNpositivecases．Ofthe202normalcases．therewere404m

4、ammograms．CADmake319marks，including95MCmarkers，184MAmarkersand40LNmarks．TheaveragenumberofFALSEPOSITIVEmarkspercasewasO．889，withO．235MCmarkers，0．455MAmarkersand0．099LNmarkspercase．②Ofthe415CanCercases，88wereclassifiedasBI-RADSl；143wereclassifiedasBI-RADS2．157wereclassifieda

5、sBI—RADS3；and27wereclassifiedasBI—RADS4．111eCADdetects221of23lnonsensecases，165of184densecases，includingMC140casesandMA170cases，MC131casesandMA79casesrespectively．111eCADismoresensitivityindetectingMCthanMA(93．77％VS84．41％)statistically(P=0．000)．TheCADdetectsmoreinnondenseth

6、anindensebreasts(95．67％VS89．67％)(P--0．000)，especiallyforthecasesmanifestedasMA，(89．47％VS75．24％)(P=0．001)．ButfortheCanCerSmanifestedasMCmammographicaUy,thereWasnostatisticallysignificantdifferenceintheCADperformanceinnondenseVerSUSdensebreasts(P=O．891)．(要)Ofthe202normalcases

7、，studyradiologistsclassified26aSBI．RADS1；55asBI．RADS2；87asBI—RADS3；and34asBI—RADS4．Therewere81nonsenseand121densebreastcasesdetectedbyCAD．InnondenseC“3．ses，20caseshavethreeormoreFALSEPOSITIVEmarks，and19havethreeormoreindensecases．ThereWasnostatisticallysignificantdifference

8、innondensethanindensebreastcases(p=0．113)．V天津医科人学硕十学传论文ConclUSion：①CADcanmarkthedo