最新医学类-牙科放射线学--口腔數位影像失誤-药学医学精品资料.ppt

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1、最新医学类-牙科放射线学--口腔數位影像失誤-药学医学精品资料IdentifyandclassifyoraldigitalimageartifactsKnowhowtoeliminateoraldigitalimageartifacts學習目標1.EricWhaites:Essentialsofdentalradiography&radiology3rdedition,Chapter172.White&Pharoah:Oralradiology:principle&interpretation5thedition,Chapter22References3.KaohsiungMedic

2、alUniversity,OralPathologyDepartment4.ParksET,etal.JContempDentPract2002;4:23-39Photostimulablephosphorstorageplate(PSP)systemDigitalImageArtifactsRef.3Teethofbothjawsgrounddownuntilsmooth&aplastictubewasinsertedintothesmallerjawSnap-A-RayholdingdeviceModifiedSnap-A-RayholdingdeviceRef.3Convent

3、ionalocclusalfilmRef.3Double-sidedtapeDouble-sidedtapeRef.3ProtectionofdigitalocclusalfilmRef.3Normal&defectivePSPsensorplatesOperatorErrorsRef.4CorrectorientationofsensorplatewithinthecassetteRef.3ACThesensorplatewasincorrectlyplacedupsidedownwithinthecassetteRef.3ACThesurfaceofthesensorplatee

4、xposedtotheX-raywasincorrectlyinclinedduringthescanningprocessRef.3RepeatedX-rayexposureofthesameintraoralsensorplateRetakenacorrectedimageRef.3ImageobtainedwastoobrightduetodelayedsensorplatescanningRef.3BendingoftheintraoralsensorplatewithinthemouthRef.3ScanningMachineErrorsRefs.3,4Imageobtai

5、nedwastoobrightdespitescanningwithoptimalconditionsandproceduresRef.3ImageobtainedwastoobrightdespitescanningwithoptimalconditionsandproceduresRef.3ABImageobtainedwastoobrightdespitescanningwithoptimalconditionsandproceduresCorrectimageobtainedafterrescanningwithanotherscannerRef.3Unevenbrightn

6、essofanextraoralimageafterscanningRef.3AnadditionalhorizontalwhitelinewasnotedafterscanningRef.3BReductioninimagesizeafterscanningRef.3Afterthescanningoftwodifferentintraoralsensorplatesintwodifferentslotsofthescanningmachine,thetworesultingimageswasoverlappedRef.3Onlyhalfoftheintraoralimagewas

7、displayedafterscanningRef.3SensorErrorsRef.3ABDefectiveimageresultingfromsensorplatedamagedbyscratchesorbitemarkRef.3DefectiveimageresultingfromsensorplatedamagedbybitemarkRef.3Defectiveimageresultingfrompartialpeelingofthecrystal