标签: tomography

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……

摘要：本教程介绍如何正电子发射断层显像（PET）成像系统产生的3-D医疗图像。文章详细介绍了如何PET系统检测伽玛射线产生的掺糖注射时不同的反应，受影响的组织。本文还讨论了如何竞争环境中的电气噪声影响成像，以及为什么它是重要的，准确地检测出光子的时间和运动，因此在患者中产生的信号可以本地化。通常在PET系统功能框图显示的IC元件。Maxim>Designsupport>Appnotes>A/DandD/AConversion/SamplingCircuits>APP4680Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4680Keywords:PET,positronemissiontomography,medicalimaging,medicalscan,3-Dmedical,gammarays,photon,electricalcomponentsformedicalMay10,2010APPLICATIONNOTE4680IntroductiontoPositronEmissionTomography(PET)ImagingAbstract:Thistutorialexplainshowpositronemissiontomography(PET)imagingsystemsgenerate3-Dmedicalimages.ThearticledetailshowthePETsystemdetectsgamma-raysproducedwheninjecteddopedsugarsreactdifferentlytoaffectedtissue.Thearticlealsodiscus……