最新3D Augmented Reality for MRI Surgery Using Integral -药学医学精品资料.ppt

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1、最新3DAugmentedRealityforMRISurgeryUsingIntegral-药学医学精品资料OutlineIntroductionMaterialandMethodsSystemConfigurationIVImageDisplayandOverlayDeviceRegistrationofSpatial3DImageinPatientSoftwareAlignmentSurgicalProcedureExperimentandResultsConclusionIntroductionMagneticr

2、esonanceimaging(MRI)AmedicalimagingtechniqueProvidesdetailedinformationaboutsofttissue.IntroductionIntegralVideography(IV)SystemConfigurationIVImageandOverlayDeviceRegistrationof3DImageinPatientRegistrationof3DImageinPatientRegistrationof3DImageinPatientRegistrat

3、ionof3DImageinPatientSoftwareAlignmentSurgicalProcedureCalibratethepositionofreflectedIVimage;Placesterilefiducialmarkersonthesurfaceofthepatient’sbodyandscanthetargetarea;SegmentthetargetofinterestandmarkersfromtheMRIdata.Performpatient-to-imageregistrationtofin

4、dthe;SurgicalProcedureRendertheIVimagesandtransferthemtotheoverlaydevice;PerformthesurgicaltreatmentundertheguidanceofIVimageoverlay;Afterfinishingthetreatment,translatethepatientintothescanneragainandconfirmsurgicalresult.ExperimentandResultsAccuracymeasurementI

5、mplementedbyusingmarkersinaphantomsimulatingthehumanhead.AccuracymeasurementFivemarkersforregistrationandtwoforerrormeasurement.Marker:10mminexternaldiameterand3mmininternaldiameter.ThedistancebetweenthecenteroftheactualmarkerandthatofthespatialprojectedIVmarkerw

6、asmeasuredasanoverlayerror.Themeanvalueoftheerrorwas0.90mm,andthestandarddeviationwas0.21mmTargetingExperimentComparetheproceduretimeandsuccessrateoftargetinganobjectusing2-DimageguidanceandIVoverlaysystemguidance.Phantomconsistedofaplasticcubecontainerfilledwitha

7、nagar.TargetingExperimentSixMRImarkerswereattached.Threesetsofacryliccylinderswithdiametersof1.5,2and3mmwereembeddedwithinthephantom.2-DimageguidanceIVoverlaysystemguidanceResultsofguidance2-DimageguidanceIVoverlaysystemguidanceComparisonofproceduretimeFeasibilit

8、yEvaluationEvaluatethefeasibilitybyavolunteertest.ScanbrainusingMRI.Motionparallaxcouldbegeneratedduetothemotionofanobserver.ThemotionparallaxofIVautostereosco