牙科放射线学-口腔數位影像失誤

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1、牙科放射線學OralDigitalImageArtifacts口腔數位影像失誤高雄醫學大學口腔病理科IdentifyandclassifyoraldigitalimageartifactsKnowhowtoeliminateoraldigitalimageartifacts學習目標1.EricWhaites:Essentialsofdentalradiography&radiology3rdedition,Chapter172.White&Pharoah:Oralradiology:principle&interpretation5thedition,Chapter22Reference

2、s3.KaohsiungMedicalUniversity,OralPathologyDepartment4.ParksET,etal.JContempDentPract2002;4:23-39Photostimulablephosphorstorageplate(PSP)systemDigitalImageArtifactsRef.3PSPsensorplatesSidetowardsX-raytubeEquivalenttothe‘dot’onconventionalradiographicfilmRef.3PSPsensorplateSealedwithdisposablebarr

3、ierenvelopeRef.3AblackboxusedtoprotectthesensorplatefromroomlightRef.3Teethofbothjawsgrounddownuntilsmooth&aplastictubewasinsertedintothesmallerjawSnap-A-RayholdingdeviceModifiedSnap-A-RayholdingdeviceRef.3ConventionalocclusalfilmRef.3Double-sidedtapeDouble-sidedtapeRef.3Protectionofdigitalocclus

4、alfilmRef.3Normal&defectivePSPsensorplatesOperatorErrorsRef.4CorrectorientationofsensorplatewithinthecassetteRef.3ACThesensorplatewasincorrectlyplacedupsidedownwithinthecassetteRef.3ACThesurfaceofthesensorplateexposedtotheX-raywasincorrectlyinclinedduringthescanningprocessRef.3RepeatedX-rayexposu

5、reofthesameintraoralsensorplateRetakenacorrectedimageRef.3ImageobtainedwastoobrightduetodelayedsensorplatescanningRef.3BendingoftheintraoralsensorplatewithinthemouthRef.3ScanningMachineErrorsRefs.3,4ImageobtainedwastoobrightdespitescanningwithoptimalconditionsandproceduresRef.3Imageobtainedwastoo

6、brightdespitescanningwithoptimalconditionsandproceduresRef.3ABImageobtainedwastoobrightdespitescanningwithoptimalconditionsandproceduresCorrectimageobtainedafterrescanningwithanotherscannerRef.3UnevenbrightnessofanextraoralimageafterscanningRef.3Anadditionalhorizontalwhitelinewasnotedafterscannin

7、gRef.3BReductioninimagesizeafterscanningRef.3Afterthescanningoftwodifferentintraoralsensorplatesintwodifferentslotsofthescanningmachine,thetworesultingimageswasoverlappedRef.3Onlyhalfoftheintraoralimagewasdisplayedafte