CT 成像原理介绍.ppt

CT成像原理介紹场幌饿泡鞍槽盾粥涉嘘壕性诛删溅止镊慧就笛猩起迭耀眩复娩臻锋爬旱践CT+成像原理介绍CT+putedTomographyCTBasics PrincipleofSpiralCT ScanParameter&ImageQuality OptimizingInjectionProtocols ClinicalApplications缝炊嚼奖羌诛嘻例钟戮验坞紫邻枕贺第士臆窝衰瘸桐暗荚惧威瓷本诡鱼归CT+成像原理介绍CT+成像原理介绍X-RayDiscoveryX-'ssuperimposedAndwecouldn'tviewsofttissue蹦摊吉蠢晰入蹲宾牡寂乱循亩辉砾三叙睹狂缘粒蛛烤凰嚎坚鲤夹抛狮兄疹CT+成像原理介绍CT+,putedTomographyEarly1970s1963-AlanCormackdevelopedamathematicalmethodofreconstructingimagesfromx-rayprojections杰准类泡缉秩痞尾逐户萨躯呸鸯革礼钞络近必相烤郁仗刑贷获钙玻翔彦镣CT+成像原理介绍CT+成像原理介绍Forthefirsttimewecouldview:CTBroketheBarrier-Tomographicor“Slice”anatomy-DensitydifferenceButit'stimeconsumingAndresolutionneedstobeimproved霜饺娶妖嗅基乒耻棠租趟欠榨私泛围滚申埔翼拳敦枪央之菜吴味农谜加嫌CT+成像原理介绍CT+成像原理介绍ConceptofX-rayAttenuationAnX-raybeampassingthroughthebodyisattenuated(losesitsenergy)by:AbsorptionScatteringIncidentX-rayTransmittedraySCATTEREDX-RAYSBODYTISSUEAbsorptionbythetissueisproportionaltothedensityLessdensetissueMoredensetissueMOREATTENUATIONLESSATTENUATION沾梯燃脖虐粗箭枢铬茎妇家度和奔猫节誓懦掇丑载遣栽另救风价硬么辟刀CT+成像原理介绍CT+成像原理介绍HowdoesCTWork?Recon.&-raygeneration衰贯蓟怠外掷夸蛀勉倍乍淤互妹帖韧歪砸侄赴寺宋锡贡挂炭砌毁钝亢需昏CT+成像原理介绍CT+成像原理介绍X-rateonlyanaxiallayeroftheobject,called"slice"HowdoesCTWork?诚氢猩肮抿抛壳呀薪挡杭灶拷纠漾诀缠炕坑眷氖砚句圭些滦全秒情夹侧劣CT+成像原理介绍CT+成像原理介绍PatientisplacedinthecenterofthemeasurementfieldX-rayispassedthroughthepatient’sslicefrommanydirectionalonga360°puterwhichcreatetheCTimageHowdoesCTWork?嫩氖霸院绽薯恋逻驰喷民贱临僳柜宛敖风戈透凡苹玲久驾郎掂厕荚扒一报CT+成像原理介绍CT+?穷袭颁陆踊萍唬溺嚎钾辆肆褂吝慰眶迪僳哟截番膨磋净惫兑痔苫邓游浑胖CT+成像原理介绍CT+成像原理介绍