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Dołączył: 21 Lut 2011
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 Wysłany: Pią 2:39, 04 Mar 2011 Temat postu: MRI设备中低ë |
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MRI设备中低对比度分辨力的检测
[Mnuclearmagnetic[esollallcetaskgroltpNoIMedPlaysI990；l7f21：2372．OchJG，lalAcceptanceteslingotmagnelicsonaTlceimagingsyslem：reportofAAPMnuclearmagneticrsonaltc~taskgroupNo6．MedPhysI992；I9(I)：217I997-0310收稿，1997-04―14修回)MeasureLowContrastResolutionForMRIKangLili，LinYiqun(DeparOnentotBiomedicalEngineerig，TheFirstMilitaryMedicalUniversiO,，Guangzhou510515)AbstractLowcontrastresolutionisOECofthequalityparametersofMRlequipment．Thoughtheparametcrisveryimportanttoclinicaldiagnosis，itisoftenstruckoffthemeasuringlist，asitsmeasureisstillaproblem．AnapproachisintroducedinthispapertomeasureandevaluatetheparameterMedicalpracticeverifiedtheapproach．Keywords：MRI；Lowcontrastresolution；Measure(上接第230页)AnImprovementofCalculatingDose-VolumeHistograminThree-dimensionalTreatmentPlanningYangShaozhou,LQQingwen【DepartmentofBiomedic。alEngineering，TheFirstMilitaryMedicalUniversity,Guang2o“510515、AbstraetDose_、ohinlehistogram(DVH1showstherelationshipbetweendoseandvolumeinthreedimensionaltreamaentplanning，andisavaluabletoolinevaluatingthetreatmentplanofstereotacticmdiosurgery．ConventionalDVHcalculationiasedontheprocessingofsamplingpointsinthedosedomain．Theremustbealargenumberofsamplingpointsandtheel'forislargeTheauthorsintmducedanewalgorithmbasedontheprocessingofsamplingpointsinthevolumedomain．ThesamplingpointsweresortedaccordingtothedoseItiseflicientandprecise，especiallywhenonlyasmallanlountofpointsareavalIableKeywords：Stereotacticradiosurgery；Three-dimensionaltreatmentplanning；Do&~-一volumehistogram
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