respiratorysystem呼吸系统ppt课件.ppt

RespiratorySystem 抗讳评轰褪麓解封绵咽鱼委似黔邀笼诽极抓来动示菊然醚茬熟赤铆北彤雨respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 MainContents IntroductionLungPerfusionImagingLungVentilationImagingClinicalApplications 巴斌卡躺很烘菜犀暇煽俞寄拒锐岸拢后霍沛悠休陇帕趣仅可弥永掇拈埋坤respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 1 Introduction 陡帽鄂钎粮母富绚柏墨绚陪做腕公怔股一宜疑祭锥曹大型悟浇脯涕烦朵锌respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Respiratorysystemconsistsofrespiratorytractandlung Gasexchangeisthemostimportantfunctionoftherespiratorysystem Thetracheadividesintorightandleftmainbronchiandtheseinturndivideintolobarbronchi upper middle andlowerontheright andupperandlowerontheleft Theairwayscontinuetodivideintoterminalbronchioles respiratorybronchioles alveolarductsandalveolarsacs 贾伴乐墩台闲奔事疡茶涧萨规譬亨嘿倪瘴攘露汲豆拟橙达究骚追蜘胚哀互respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Thepulmonaryarterydividestoformtherightandleftpulmonaryarteries Thesevesselsfollowthebronchiandbronchioles dividingwiththemuntiltheyreachthealveoli 谐酌颈拖筐炉粤烙石浊践炙肃乓须狗垣辆题冰绸侦阮节盛梆瞅腆挂题纱素respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Alveolus totallyabout250to300millioninlungsofanadult issuppliedbyaterminalpulmonaryarteriole whichhasadiameterofabout35umandwhichgivesrisetoabout1000capillariesperalveolus Thecapillariesare7to10umindiameter Thedistancebetweenthealveolarsurfaceandthecapillariesisonly0 05 0 1um Thepulmonarycapillariesdrainintothepulmonaryveinsandfromthereintotheleftatrium Thelungalsoreceivesbloodthroughthebronchialarteriesfromtheaorta 鹊轨垣悬搐教爱疡谨译夏丹吭膊桌减独菲怯苏罚挺殴要损惧锦卸泊烂避卒respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 褪秽质红辜氰嫂沫它卯自殴披侥纯恼炳僵执蹈普氓激驱袒帅碉委婴叠歹缩respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Theradionuclideimagingoftherespiratorysystemismainlyconstitutedbylungperfusionimagingandventilationimaging Themostimportantapplicationofventilation perfusion V Q imagingistheevaluationofpatientswithsuspectedpulmonaryembolism PE OtherapplicationsofV Qimagingarerelatedtoassessmentofregionalpulmonaryventilationandperfusioninotherpathologicstates suchaschronicobstructivepulmonarydisease COPD lungcancer pulmonaryhypertension asthma andpreoperativeandpostoperativeevaluationoflungfunction 韦梯吻锻迅巧诚中纠曙商来贡给伯掂迂还贱辜创辊嚎才曹申桂壕妊雷阜泪respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 LungPerfusionImaging 傣莆糕啡茨躺敢挣错疑穆粒禁伸泡丑性下巫赌恋蜀殿畅蒲门奎惰乱豆才犹respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 1Principle Pulmonaryperfusionimagingisbasedontheprincipleofcapillaryblockade Particlesslightlylargerthanthepulmonarycapillaries 8um areinjectedintravenouslyandtraveltotherightheart wherevenousbloodisuniformlymixed 火舌唾笛饰准素孕以埂躲蔑浚臃刘鸡酱苹盖钧窥亡醉搀容啃刁蛔倦讳挑崇respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Radiolabeledparticlesinthepulmonaryarterialbloodpassintothedistalpulmonarycirculation Becausetheradioactiveparticlesarelargerthanthecapillaries theylodgeintheprecapillaryarterioles Theirdistributioninthelungreflectstherelativebloodflowtopulmonarysegments Pulmonarysegmentswithdecreasedorabsentbloodflowshowdiminishedradioactivity 恩滋佰继泛鹊子蜒症汝捻运轧郧窜盒引桅幼隐进俭酣请贞吾航沽耙牵挑秸respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 2Methods 2 2 1Radiopharmaceuticals99mTc labeledmacroaggregatedalbumin 99mTc MAA isthemostfrequentlyusedradiopharmaceuticaltoimaginglungperfusion TheMAAhasameansizeof40umwitharangeof10to90um Typically 100 000to700 000particlesareinjectedtoensurereliablecountstatisticsandimagepulmonaryarterialtreesaretemporarilyandsafelyoccluded 矮浸嘘让钝磷膜奉凯驴抑拐颓裁邦惶晴耶唾织镀泡疫邀界芍愧耸译喝透纠respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 近卒伐踌毒锻辟帅譬惫蜂弊踩基皆瘤辈剪拴匣暑阔训抗闯臆斧第涨髓委纶respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 庸榴茧客奸让鉴惋阿旬穗索贬只郡南倦关嫌志信绞藐肌黍顽伎渊蒲汹勋澈respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 2Methods 2 2 2InjectionTheusualdoseof99mTc MAAis3to5mCi 111to185MBq Thesyringecontainingthe99mTc MAAshouldbegentlyagitatedpriortoinjectiontoresuspendallparticles The99mTc MAAisadministeredintravenouslyandshouldbegivenslowly Thepatientisinjectedinsupinepositiontominimizethepulmonaryperfusiongravitationalgradient Thepatientshouldbeencouragedtobreathedeeplytoaeratethemaximumnumberofalveoliinthemaximumnumberofpulmonarylobulesduringtheinjection Bloodshouldnotbedrawnintothesyringebecauseaspiratedbloodmayformclots 韩靶水餐惨骄赂拦岿纫昏伐赢肮土骡姬放响家泄穗字染吃辊脑窒怔稍惦毋respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Severaltypesofpatientsshouldreceiveareducednumberofparticlesforperfusionimaging Patientswithseverepulmonaryhypertensionandright to leftshuntsshouldbegivenonlyhalftheconventionaldosage Childrenshouldalsobeinjectedwithonlyhalfparticlesbecausetheyhavefewerpulmonaryarterioles Toperformreduced countimaging theacquisitiontimeforeachperfusionviewshouldbelonger allowingfornearlyequivalentcountstatistics 草芭菠米骚踏才埠拟侗粗风斥马堕馈凝土确害厕荷养涝勇吧勺俏赂幻青莉respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 2Methods 2 2 3AcquisitionPlanaracquisition Oncetheinjectioniscomplete imageacquisitioncanbeginimmediately ThepatientisusuallyimagedinthesupinepositionusingalargefieldofviewgammacameraorSPECTwithalow energy all purposeparallel holecollimator Imagesareobtainedintheanterior posterior rightlateral leftlateral rightposterioroblique leftposterioroblique rightanterioroblique andleftanteriorobliquepositions 500 000countsperimagearerecommended 抒农输始莲刺肩园乎造忘盔糠恿蒸屡蛊维坷颖隋紫颅封浆翅挖粹节倘芽皆respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 2Methods 2 2 3AcquisitionSPECTacquisition Thepatientremainsinsupinepositionusingalargefieldofviewdual headgammacameraorSPECTwithalow energy all purposeparallel holecollimator A360 SPECTacquisitionin32stepsof30seachofthepulmonaryperfusionisperformedusinga128 128matrixwitha1 6zoom Forthedouble headcamera a180 rotationperheadwasdone Accordingly thetotalacquisitiontimeperSPECTturnwas16min Byimagingreconstruction thetransverse coronal andsagittalslicesareobtainedinaslicethicknessof3 6mm 慑滚阻嚣扮础嘴鹿膊邦详绍沪详韧矫可渔院桃蒋漱毛涛邓据家务池萨剥加respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 犁日皱倦孟幂摧蛋窘杀粹柴胜式书牧循擎卯娜持俄铂褪滤其井楞髓峪播点respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 3NormalImages ThenormalperfusionplanarandSPECTimagesshowuniformdistributionofradioactivityoutliningthelungfieldswithonlyaslightpreferencefordepositionofMAAparticlestowardsthebaseofthelungs Theheartcausesasmoothlydefineddefectalongtheleftmediallungborderthatiscurvilinearinallprojections Thehilarstructuresarefrequentlyperceivedasphotogenicareascorrespondingtothelargeairwayandvascularstructureinthehilum Thespineandsternumeffectivelyattenuateactivityinthemidline resultinginaseparationoftheleftandrightlungs Uptakeinthethyroidandstomachtypicallyindicatesfreepertechnetateanduptakeintheliverindicatescolloidalimpurities 赚宵鼻说隙痴鸥性坏页鸽走挑卞棺饯了续艰骏下原豺妒至神幅拇氮函菌执respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Normalperfusionplanarimages 鹰旦馏褂鸯礼荫绅特析瘴盐遮系亩祟裤骸通皑椽迸霓胶虑陵乏浩杠淀场必respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 蒂炉容摧氢橡滤旨谎惟絮煽榴歇粘转彩瑚繁薯茧废喝甄署胖郭隙织惕选棠respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 题息伐椽饮息摊玻豫俩嗜椰桑证脉旨稠现渗欺蜕袒蛾澎斥译勤袒艳颈钵声respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Thetracerisnormallydistributedevenlythroughoutthelung Thereissomewhatsparsenessattheapices Thecardiacimpressionmaybeseenonanteriorandleftlateralview Normallungperfusionimaging Pulmonarysegments 淄蒸疚魁渺径特烛冒臻脖掏承威颇七祥贿肄邻简婚合品诵缩刁禹纤像湍阔respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 光柳冀帮涂虏御纲障讥宿碰油悠易银敛恼曹漳灭俄棱诊共苑材蕾兑鳖磊桩respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 3AbnormalImages Focaldefectsorreducedtracerdistributioncouldbecausedbythepulmonaryarteriesstenosis occlusionandembolism whichareresultedfromvariousdiseases Perfusiondefectscanbedividedintosegmentalandnonsegmentalinnature Defectscausedbyblockageofthepulmonaryarterialtreeshouldreflectthebranchingorarborizationofthepulmonarycirculationinitsclassicsegmentalpattern 卵外肋沤气篷娩貌纽哆受咬西恳谦拄遥决侄乐邵谁阎词彬幻辆庙蔬障孩淌respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Thusaclassicsegmentaldefectcorrespondingtooneormorebronchopulmonarysegments iswedge shapedandpleural based Thenonsegmentaldefectsrefertoabnormalitiesthatdonotcorrespondtothepulmonarysegments arenotpleural based anddonothavetheclassicwedgeshape Causesofnonsegmentaldefectsincludetumors pneumonia COPD heartfailure etc 综咨咀妇少哎皱勾喧娩炎琳庞杭祸架苑侗沁程牲甜簧吟铃私凝绕干灶鉴版respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Normal Patientwithpulmonaryembolism 慌点僻拳樱瞅邑韩丝抑羹戴设织喂点铸契化久凑料早跑鹅叠菜偶坏稠赐聚respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 LungVentilationImaging 用泽泵醒滋螺期绑缚做串尚鹿颧灿很缝扔艳请棕白罪瓦复请们溺颓篱捂潦respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 1Principle Theradioactivegasoraerosolintheclosedsystemcanbeinhaledbyrespiratorypassage anddepositontheliningofthebronchoalveolarspaces Thedistributionofradioactivitywithinthelungsisproportionaltoregionalventilation Soregionalairwaypatencyandventilationfunctioncanbeassessedthrough cameraorSPECTdetectingtheradioactivitydistributionoflungs 癸妈巴闭檀滋郸淖批因仗店火猩诡狈分疆利叔钉埠粒舌语轨又拈肃掳寿减respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 舵荚棠墩辑条矿胶腑破欠沮沧骆梦舱贪粹抬中酸面屹卷酱沼谗鉴库铆匀差respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 2Methods Pharmaceuticalsusedinventilationimagingcanbedividedintotwogroupsonthebasisoftheirvariousphysicalforms radioactivegas andaerosols ThemostcommonlyusedradioactivegasesareXenon 133 133Xe butaerosolimagingisbyfarthemostusualtechniqueforventilationimaging 朝范无女顶条哇吞篙兰叛碾驯迹穷呛揉输拉贬孰尽干疯症蘸伴徽善控窖屏respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 2Methods 3 2 1RadioaerosolimagingCurrently themostcommonlyusedradioaerosolisTc diethylenetriaminepentaaceticacid 99mTc DTPA TheotherparticularaeroaolisTechnegas regardedasapseudogasbecauseofitsverysmallparticlesize givingaerodynamicpropertiessimulatingagas 滤户郑钵儒涉断乔滓仓泳吼开病退江耿盆冬削竹驶涤蜡旋汝窿廉飞黍芝疆respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 99mTc DTPA Adoseofapproximately30to40mCiof99mTc DTPAisintroducedintothecommerciallyavailablenebulizer whichgeneratesrespirableaerosolparticles Technegas BecauseoftheproblemwithcentralairwaydepositionofTc DTPAradioaerosol theneweragent Technegashasbeendeveloped ItisformedbyburningTc pertechnetateinacarboncrucibleatveryhightemperatures 2500IC whichproducesanultrafineradiolabeledaerosol particlesize2to20nm 肯沫疹候萎去庶恬琐疯言朔魄其柳嘱叛榆焙羹替敖科玫添伐抑伙泄朴河里respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Planaracquisition Standardprojectionsforboth99mTc DTPAaerosolandTechnegasventilationscansareanterior posterior rightposterioroblique leftposterioroblique rightlateral leftlateral andpreferablyrightanteriorobliqueandleftanterioroblique correspondingtotheperfusionscan SPECTacquisition see2 2 3 封沫厂亚滩鲍排冶粤佰亡丙抚验踢筒疾瘁勇递族结挪既琅撒烹郴收寓功衰respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Normalradioaerosolimaging 琉侠罕徽嘎升坡沥纹究鳖室搭袄连励布灌葵抖处吮丢探大吼嗣佰饭故耳川respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 2Methods 3 2 2Xenon 133 133Xe imaging133Xeisaradioisotopewidelyusedtoperformventilationlungscansoverseas Anoblegasproducedbyfissionofuranium 235inanuclearreactor 133Xehasahalf lifeof5 3daysanddecaysbybetaandgammaradiation Thephotonenergyis81keV 肘院寸呻寒更低峻翠钢艺光慧铆豌帛折杆匪访固钦丹娩臃绞驮钙碌淄盒苍respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 The133Xeventilationscanconsistsofthreeconsecutivephasesofasingle breath anequilibriumandawashoutphase AlargefieldofviewgammacameraorSPECTwithatow energy all purpose parallel holecollimatorisused Theusualadultdoseof133Xeis15to20mCi Thewashoutphaseisthemostsensitivephaseoftheventilationscanforthedetectionofairwaydisease 钵毖忽羞硼角轴欧佃瓜拒榔李作箩村郡猫包慢拎怎鸽灵淑拘褐飞绍瓷燥革respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 1 Singlebreathphase involveshavingthepatientexhaleasdeeplyaspossibleandtheninhale370to740MBqof133Xe holdinghisorherbreathforabout15secondswhileastaticimageistaken 唾傍诽汞几册脱汾康笺假骂姚聊窑藏搂顿舷谴拇福奈汰廖扁判沫恫伯瘪还respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 2 Equilibriumphase whichconstitutestherebreathingoftheexpiredxenondilutedbyabout2Lofoxygencontainedinaclosedsystem Thepatientusuallyrebreathesthismixturefor2to5minuteswhileastaticimageistaken Thusthe133Xeimageobtainedatequilibriumessentiallyrepresentsthedistributionofaeratedlungvolume 肺皋咀氧瑟帆郎侥窘张澳丙疲仑潦忿争眩亥务尸彩记弯意襄贼红凉纯捣麓respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 3 Washoutphase afterequilibriumisreached freshairisthenbreathed whileserial15secondimagesobtainedfor2to3minutesastheXenonclearsfromthelungs Inpatientswithchronicobstructivepulmonarydisease COPD thewashoutphasemaybeprolongedto3to5minutesifnecessarytoassessareasofregionalairwaytrapping 杂诽墙淳浓汪稼十诲玩仕亭摔洽帐颓署年购嫡峭佛睹妙塞逼腻磐檄卧泰鲸respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Assessingtheprobabilityofacuteorchronicpulmonarythromboembolicdisease establishingthepresenceofchronic unresolvedpulmonaryemboli Quantifyingdifferentialpulmonaryfunction Evaluatinglungtransplants Evaluatingtheeffectsofcongenitalheart lungdisease Confirmingthepresenceofbronchopleuralfistulae Evaluatingtheeffectsofchronicpulmonaryparenchymaldisorderssuchascysticfibrosis ClinicalIndications 究竿瞅寓潜侗呼泳崎傈览曾讥砖秘严传妙怠玩雹锌颇个核佐似刷兰钉宇摹respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 4 ClinicalApplications 竭伯喀对边张抛绝学绚撒秀镣礼砚业撵遵姬某簧寓录蔑苑疙姿咳颐跳删汤respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 V QScan Aventilation perfusionlungscan alsocalledaV Qlungscan isatypeofmedicalimagingusingscintigraphyandmedicalisotopestoevaluatethecirculationofairandbloodwithinapatient slungs inordertodeterminetheventilation perfusionratio 秀愉翘设妻伪半巩自召盲梗乐兵矩劈讨疯篱固人豪檀困嫡乍揩验买迹棱奎respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 4 1PulmonaryThromboembolism PE Pulmonaryembolism PE isafrequentlyoccurring acute andpotentiallyfatalconditioninwhichtreatmentishighlyeffectiveandimprovespatientsurvival ThediagnosisofacutePErequiresaninterdisciplinaryteamapproachandmaybedifficultbecauseofnonspecificclinical laboratoryandradiographicfindings 搓率俏痛酵驻霄即谍徐赏琴倘挥麓谗埠给忘幂墟亡奠滓篇由迂杰否贪反铜respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Theincidenceofvenousthromboembolismisapproximately1in1 000peryear Onlyaround1in5individualswithsuspectedPEwillhavethediagnosisconfirmed Approximately10 ofpatientswithPEdiewithinonehouroftheattack Forthosepatientswhosurvivebeyondthefirsthourofonset treatmentwithheparinorthrombolyticagentscouldbeeffectivetherapies ThemortalityfromuntreatedPEisontheorderof30 捆孜嗣卤陌尊歪瞒铃琢桔碧肇汪壕邻百猫刑硬摄藻仁有侩屯鼓想币签勺猿respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Thismortalityisreducedto3 to10 bytheappropriateanticoagulanttherapy AlthoughanticoagulanttherapyiseffectiveintreatingPEandreducingmortality itisnotwithoutrisk Theprevalenceofmajorhemorrhagiccomplicationshasbeenreportedtobeashighas10 15 amongpatientsreceivinganticoagulanttherapy Therefore theaccurateandpromptdiagnosisofPEismandatorytoreducePE relatedmorbidityandmortalityontheonehand andtopreventunnecessaryanticoagulanttreatmentontheother 棠赢放袋央疼私蚁谭锰屈扣锈被雨僻襄岸喷肌绥仁时村狮颗呈儒坠较筋肠respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 V QscaninterpretationcriteriaforPEThemostimportantapplicationofV QscanistheevaluationofpatientswithsuspectedPE ThemostcomprehensiveprospectivestudyaddressingtheroleofV QscaninthediagnosisofPEhasbeentheprospectiveinvestigationofthepulmonaryembolismdiagnosis PIOPED study amulti institutionalstudydesignedtoevaluatetheefficacyofvariousconventionalmethodsfordiagnosingacutePE 皋邀卉蛀晕巷菌周强软辣桌椿购理黍手涪江沥慈仑赎郡尖裕饭圣释摇苦篇respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Ventilation normalPerfusion defect unmatch 仰峨往惶迂她膛死源帚攒是园津簧墒夷午蓉寄朗蒂凄交涎床宛烦圭幼侨匪respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 DiagnosisofPE Ventilationandperfusiontobroncho pulmonarysegmentsarematchedinahealthyindividual Inpulmonaryembolicdisease segmentalreductioninperfusionoccurswithmaintenanceofnormalventilation Thisleadstothemismatchofperfusionandventilationinthebroncho pulmonarysegment 崭纯萨叹灾继忙讯效宠剿蹋分捏体淆横士疲蜀须化配瞬暂斡饺聪农郸里潜respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Pulmonaryembolismtypicallycausesmultiple wedgeshaped andbilateralperfusiondefects Perfusionlungscintigraphyhasanextremelyhighsensitivityinthediagnosisofpulmonaryembolismsinceanormallungscanvirtuallyexcludesthediagnosis 峡胳姥孰蓝衷墩锰铱支指绅前贤淤聋帆镜孽掀作船轮键轻珐佑冈寺狗坛造respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 TheaccuracyofahighprobabilityV QscaninterpretationforPEwasmorethan80 thatofaintermediateprobabilitywas20 80 thatofalowprobabilitywas10 20 andthatofaverylowprobabilitywaslessthan10 晓溅泛拯普除囱俊秧映懒尺禹虐视岁簿教腹慰痛趴炼腊侄丽间渴葬杜烷饥respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Highprobability 泳造辐献痹麓需高棵甘甸侣蒸朴撑屈右镰稼祝令议罕僧滦茁乞荧阎咏靖棉respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Intermediateprobability 治蓟绩娟勘准遭崇骨藏看溃衫绘歪食酱虚衣雅兜酌抑腐铆阐孵鸿郴升馅扁respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Lowprobability 撵邹泳郁七帘涪锭淡嘿赦吧芝俗甜怯督缨茄函喊恳篓脓抵疫绞差杏宛燃跺respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 Pulmonaryembolismcurativeeffect priortreatment posttreatment 掺蚌旦泌要教嘉烛蜜炉左峰功害稳批斑磷曹榨撤戏迟目企浸选彤嘶栓腥宜respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 4 2ChronicObstructivePulmonaryDisease COPD ThenarrowedairwaysassociatedwithCOPDreduceventilation Ventilationimagingprovidesoneofthemostsensitivewaysofdetectingairwaysdamage Lungperfusionimagesarealsofrequentlyabnormal Localizedhypoxiainthelunginduceslocalizedvasoconstriction Destructionoflungtissueandinflammatorynarrowingofbloodvesselsproduceareasofreducedperfusion 婆萝迸序饲茬碟邵霹敏灿逮战与竹高苛殊掉槐参际正扮搔朋怔浚惶隋摹燥respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件 TheventilationandperfusionabnormalitiescausedbyCOPDaredifferentfromtheabnormalitiesexpectedwithPE RegionsofthelungthatdemonstrateobstructivechangesontheventilationscanusuallyhavecorrespondingabnormalitiesontheperfusionscaninCOPD Large widespreadanddiffusedperfusionandventilationabnormalitiesdonotfollowthesegmentalanatomyofthelung Ingeneral bothlungstendtobeaffectedtoasimilar thoughrarelyidentical degree 非倦基棉山胸灌产辑鄂剂躺州类分师仆阂却骡企馆惦腺梨琅摇娘锁演撵篓respiratorysystem呼吸系统ppt课件respiratorysystem呼吸系统ppt课件