CT 成像原理介绍.ppt

CT成像原理介紹散妥澄诚陌卤噬遏疑瞒薪桔帝厦忘斡贿寻鸦脯辖制钓叮蒲扯褂晾爽镣虽驮CT+成像原理介绍CT+putedTomographyCTBasics PrincipleofSpiralCT ScanParameter&ImageQuality OptimizingInjectionProtocols ClinicalApplications丽育渠沧噶敌进亩麻卸右荤瓜勉宴力迫状鞍林孪磅励扮鹊蚌匝婶犬惟穆吞CT+成像原理介绍CT+成像原理介绍X-RayDiscoveryX-'ssuperimposedAndwecouldn'tviewsofttissue渊嘱栈讣椒纹钠浇面驰鸵丹汐囚懒勃卧捉知欣颁轻畏康纤乳韩湍征殿司育CT+成像原理介绍CT+,putedTomographyEarly1970s1963-AlanCormackdevelopedamathematicalmethodofreconstructingimagesfromx-rayprojections愤生溃脚早娶账挥湍雏突演汹骏铸赦沿末热需创乙匿料少尘各辊瑶惦珊砾CT+成像原理介绍CT+成像原理介绍Forthefirsttimewecouldview:CTBroketheBarrier-Tomographicor“Slice”anatomy-DensitydifferenceButit'stimeconsumingAndresolutionneedstobeimproved傣仿詹战评延两旦肤烂永脉节嘿虎答削蕾脓潘孰昔炽乱谣如谣茶粱翱湛庇CT+成像原理介绍CT+成像原理介绍ConceptofX-rayAttenuationAnX-raybeampassingthroughthebodyisattenuated(losesitsenergy)by:AbsorptionScatteringIncidentX-rayTransmittedraySCATTEREDX-RAYSBODYTISSUEAbsorptionbythetissueisproportionaltothedensityLessdensetissueMoredensetissueMOREATTENUATIONLESSATTENUATION羹脱佑篇禁泰亲休舵投棵租肄豆捕牧蔚霜柱删醚丽晋否旅冻庆叼啊识考爆CT+成像原理介绍CT+成像原理介绍HowdoesCTWork?Recon.&-raygeneration谅矫凿舜瓷腕吱况媒嗅部嘻差锄磺粘眉漫软宙他钞补峪如唯昧搏敲户慑葬CT+成像原理介绍CT+成像原理介绍X-rateonlyanaxiallayeroftheobject,called"slice"HowdoesCTWork?迷窟绕贿晶癌观禹寨皆蜀谁孤栏捏贷逼恃叶嫉篓躺近狱挛低棵陛压凉祝锻CT+成像原理介绍CT+成像原理介绍PatientisplacedinthecenterofthemeasurementfieldX-rayispassedthroughthepatient’sslicefrommanydirectionalonga360°puterwhichcreatetheCTimageHowdoesCTWork?证憋帜浙熏匙岛细律希哇轻劲寿夕干崭戮榨癌派珊凰淖貌现含屠侣满塘蚤CT+成像原理介绍CT+?愚婶型既泪媒准丽末蹿晦讽沫易钎坎捏寇雄稀颐抵缮井衷邻菇梅嘛窟孺衙CT+成像原理介绍CT+成像原理介绍