Tamai T, Konishi T, Okamoto S, Sakuma H, Takeda K, Nakano T
First Department of Internal Medicine, Faculty of Medicine, Mie University, Japan.
Jpn Heart J. 1993 Nov;34(6):741-8. doi: 10.1536/ihj.34.741.
Cine magnetic resonance imaging (MRI) was used to assess aortic regurgitation (AR) in 13 patients with valvular disease and 3 normal subjects, and the results were compared to color Doppler flow mapping findings. AR produced a signal void in the left ventricle during the diastolic phase in all patients by MRI. There were no false positive or negative results compared with echocardiographic findings. Visual grading of cine MRI gave results similar to color flow Doppler echocardiography (88%). The distance and the area of aortic regurgitation using MRI correlated well with color Doppler flow mapping (r = 0.82 and 0.88). However, measurements of distance and area by color flow Doppler tended to be larger than those by cine MRI. With current techniques echocardiography may overestimate the severity of AR as compared with cine MRI. In addition, MRI gives clinically useful information in patients in whom transthoracic Doppler echocardiography is not adequate.
采用电影磁共振成像（MRI）对13例瓣膜病患者和3名正常受试者的主动脉瓣反流（AR）进行评估，并将结果与彩色多普勒血流成像结果进行比较。通过MRI检查，所有患者在舒张期左心室内均出现信号缺失。与超声心动图检查结果相比，无假阳性或假阴性结果。电影MRI的视觉分级结果与彩色多普勒超声心动图相似（88%）。MRI测量的主动脉反流距离和面积与彩色多普勒血流成像相关性良好（r = 0.82和0.88）。然而，彩色多普勒血流测量的距离和面积往往大于电影MRI测量的结果。与电影MRI相比，目前的技术下超声心动图可能会高估AR的严重程度。此外，对于经胸多普勒超声心动图检查不充分的患者，MRI可提供临床有用信息。
