标签: computed

Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.CHAPTERSpecialImagingTechniques25Thischapterpresentsfourspecificaspectsofimageprocessing.First,waystocharacterizethespatialresolutionarediscussed.Thisdescribestheminimumsizeanobjectmustbetobeseeninanimage.Second,thesignal-to-noiseratioisexamined,explaininghowfaintanobjectcanbeandstillbedetected.Third,morphologicaltechniquesareintroduced.Thesearenonlinearoperationsusedtomanipulatebinaryimages(whereeachpixeliseitherblackorwhite).Fourth,theremarkabletechniqueofcomputedtomographyisdescribed.Thishasrevolutionizedmedicaldiagnosisbyprovidingdetailedimagesoftheinteriorofthehumanbody.SpatialResolutionSupposewewanttocomparetwoimagings……

Abstract:Thistutorialexplainshowcomputedtomography(CT)imagingsystemsgenerate3-Dimagesofinternalbodystructures.Thehigh-endspiralCTtechniqueisexplained,asisthemethodbywhichlightcollectedfromphotodiodesisprocessedintoanelectricalsignalandeventuallyconvertedtoadigitalformatbyadigitalacquisitionsystem(DAS).Thisconversionprocessmusthappenquickly,whichmakesADCsamplingspeedsandresolutionscriticalforCTdesigns.Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4682Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4682Maxim>Designsupport>Appnotes>High-SpeedSignalProcessing>APP4682Keywords:computedtomography,ct,medicalimage,medicalcomponents,catscan,catscan,ctscanMay10,2010APPLICATIONNOTE4682IntroductiontoComputedTomography(CT)MedicalImagingAbstract:Thistutorialexplainshowcomputedtomography(CT)imagingsystemsgenerate3-Dimagesofinternalbodystructures.Thehigh-endspiralCTtechniqueisexplained,asisthemethodbywhichlightcollectedfromphotodiodesisproc……

摘要：本教程介绍了计算机断层扫描（CT）成像系统如何生成人体内部结构的3-D图像。高端螺旋CT技术的解释，是从光电二极管收集的光被加工成电信号并最终转化为数字格式由数字采集系统（DAS）的方法。这个转换过程中，必须迅速地发生​​，这使得ADC采样速度和分辨率的CT设计的关键。Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4682Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4682Maxim>Designsupport>Appnotes>High-SpeedSignalProcessing>APP4682Keywords:computedtomography,ct,medicalimage,medicalcomponents,catscan,catscan,ctscanMay10,2010APPLICATIONNOTE4682IntroductiontoComputedTomography(CT)MedicalImagingAbstract:Thistutorialexplainshowcomputedtomography(CT)imagingsystemsgenerate3-Dimagesofinternalbodystructures.Thehigh-endspiralCTtechniqueisexplained,asisthemethodbywhichlightcollectedfromphotodiodesisproc……