摘要肺高压(PAH)是先天性心脏病的严重并发症之一.报道应用99mTc标记的大分子聚合白蛋白(MAA)肺灌注显象,以右侧和左侧卧位时右肺与左肺放射性计数比值的比率rt/lt来定量分析PAH.结果表明:rt/lt与肺动脉平均压(mpap)(r=-0.94)等指标均呈一定负相关.认为此方法新颖、简单、安全、不受心内复杂畸形结构的影响,动物实验证明重复性好,因而不失为颇有价值的无创性估价PAH的诊断方法.

abstractsPulmonary hypertension (PAH) is one of the most serious complications of congenital heart dlsease.This paper reports the manifestations of pulmoary perfusion with macromolecular aggregative albumin (MAA) marked with 99m-Tc.A quantitative analysis of PAH was obtained through the total acount ratios of the right lung to left lung (rt/lt) of the patients posed in the right and left lateral decubitus positions.The results demonstrate the rt/lt had negative correlation to the mean pulmonary arterial pressure.The authors consider this method as new,invasive,safe and uninfluenced by the complicated cardiac:malformations and can be used repeatedly.It is valuable to evaluate the degree of PAH.