16层螺旋CT肺动脉3期成像对肺动脉栓塞的诊断价值
Chinese Imaging Journal of Integrated Traditional and Western Medicine(2012)
Abstract
目的:探讨16层螺旋CT肺动脉3期成像对肺动脉栓塞(PE)的诊断价值。方法:分析28例临床确诊PE患者的平扫和多期动态增强扫描表现。增强扫描选用非离子型对比剂,浓度300mgI/ml,总量100ml,从外周静脉高压注射,速度3.5~4.0ml/s,延迟时间第1期为9~11s,第2期为20~25s,第3期为60~80s。结果:28例显示累及肺动脉564支。急性PE 22例,慢性6例。肺动脉内充盈缺损包括中心型(7.45%)、附壁环型(38.48%)、偏心型(33.51%)、闭塞型(20.57%)。结论:MSCT肺动脉3期成像对PE的诊断更准确、更可靠,是无创性快速诊断PE的首选方法。
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