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| 磁共振成像对肺动脉栓塞血流动力学的评价 | |
| 引用本文： | 王娜娜,吕飙,黄小勇,于卫永.磁共振成像对肺动脉栓塞血流动力学的评价[J].中国医学影像学杂志,2011,19(1):26-30. |
| 作者姓名： | 王娜娜 吕飙 黄小勇 于卫永 |
| 作者单位： | 1. 北京市海淀医院放射科,北京,100080 2. 首都医科大学附属北京安贞医院放射科,北京,100029 3. 首都医科大学附属北京博爱医院放射科,北京,100068 |
| 摘 要： | 目的:探讨增强磁共振肺灌注成像对肺动脉栓塞血流动力学改变的价值。材料和方法:经放射性核素肺通气-灌注显像和MR肺灌注成像(MRPP)诊断的20例肺动脉栓塞患者和14例健康志愿者,行主肺动脉MR血流编码扫描,通过分析肺实质的信号强度变化率(TROS)、时间-信号曲线、右/左心室内径比及主肺动脉的相关参数(主肺动脉直径、血流峰值、平均流速、单位时间内流量等),比较肺动脉栓塞患者与志愿者间肺动脉血流动力学参数间的差异,评价MR在肺动脉栓塞血流动力学方面的作用。结果:肺栓塞患者组与健康志愿者组肺实质信号强度变化率、峰值时间、主肺动脉直径、右/左心室内径比差异有显著性意义;两组间的主肺动脉峰值流速、平均流速、流量具有统计学差异,肺栓塞患者MR血流编码的肺动脉峰值流速-时间曲线表现为收缩期峰值流时间提前,并可见明显反流。结论:MRI具有诊断肺动脉栓塞的可行性,并可测量肺动脉血流动力学参数变化,粗略估计肺动脉高压程度,有望成为一种研究肺栓塞的无创性影像方法。 |
| 关 键 词： | 肺栓塞 磁共振血管造影术 血流动力学 |
Evaluation of Pulmonary Artery Hemodynamics in Pulmonary Embolism with MRI |
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| WANG Nana,LV Biao,HUANG Xiaoyong,YU Weiyong.Evaluation of Pulmonary Artery Hemodynamics in Pulmonary Embolism with MRI[J].Chinese Journal of Medical Imaging,2011,19(1):26-30. | |
| Authors: | WANG Nana LV Biao HUANG Xiaoyong YU Weiyong |
| Institution: | WANG Nana LV Biao HUANG Xiaoyong YU Weiyong Department of Radiology,Beijing Anzhen Hospital of the Capital University of Medical Sciences,Beijing 100029 |
| Abstract: | Purpose This study was designed to investigate the value of MRI in evaluating the pulmonary artery hemodynamics of pulmonary embolism.Materials and Methods MR studies were performed in 14 healthy volunteers and 20 patients with pulmonary embolism,the latter were diagnosed by contrast enhanced MR pulmonary perfusion(MRPP)and radionuclide perfusion imaging.The changement of pulmonary parenchymal transformation rate of signal(TROS),time-signal curve,the ratio of right to left ventircular diameter,and some para... |
| Keywords: | pulmonary embolism magnetic resonance angiography hemodynamics |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |