动态肺灌注显像在诊断肝肺综合征中的价值

Thevalueofdynamicpulmonaryperfusionimaginginthediagnosisofhepatopulmonarysyndrome(HPS)

目的评估９９ｍ锝－人血清白蛋白聚合颗粒动态肺灌注显像在诊断肝肺综合征中的价值。方法对３例严重低氧血症的肝硬化患者进行研究。结果动静脉分流量占心排血量百分数（吸入１００％氧气）升高，分别为１６％、２７％和１１％，γ－照相机扫描患者两肺、脑和肾均显影，计算放射性肺内分流量分别为４３％、５２％和３２％（对照者＜７％）。肺内血管扩张是两种测定方法肺内分流量不同的原因。对１０例对照者和其他患者作了相应的测定。结论本检查不仅有助于肝肺综合征的诊断，并可确定其肺内分流量。

ObjectiveToevaluatethevalueof99m-Tc-MAAdynamicpulmonaryperfusionimag-inginthediagnosisofHPS..Methods3casesoflivercirrhosiswithmarkedhypoxemiawerestudied.ResultsTheshuntratioswith100%inspiredoxygenwereelevated(16%,27%and11%respec-tively).Imagingwithgammacamerarevealedradioisotopeuptakeintheirlungs,brainsandkidneys.Shuntratiosestimatedbythequantitativeradionuclidemethodwere43%,52%and32%respec-tively(control<7%).Thecontradictoryshuntratiobyusingtheabovemethodresultsfromdilationofalveo-larcapilaries.Thesameexaminationsweredonein10casesofhealthycontrolsandotherpatients.Con┐clusionTheimaginghelpsdiagnosingtheHPSaswelasestimatingthedegreeofshunting.