Hartnell G G, Finn J P, Zenni M, Cohen M C, Dupuy D E, Wheeler H G, Longmaid H E
Department of Radiological Science, Deaconess Hospital, Boston, MA 02215.
Radiology. 1994 Jun;191(3):697-704. doi: 10.1148/radiology.191.3.8184049.
To compare magnetic resonance (MR) angiography and fast MR imaging with spin-echo (SE) and non-MR imaging techniques in examination of the thoracic aorta.
Eighty-nine patients underwent breath-hold or cine MR angiography; SE was used in 67 patients and fast MR imaging in 28. A comparison was made with non-MR imaging (transthoracic echocardiography in 49 patients, transesophageal echocardiography in 18, and arteriography in 33) findings and those from surgery or autopsy (16 patients).
MR angiography enabled differentiation of slow flow from thrombus, demonstrated aortic valve anatomy and aortic regurgitation, and accurately showed anatomy with only one error. It demonstrated two communications, flaps, and three branch stenoses better than SE, which produced some artifacts that mimicked thrombus or flaps. Fast MR imaging often produced artifacts or poor image quality (10 of 28 patients).
Compared with SE MR imaging, MR angiography provides additional useful anatomic and functional information concerning diseases of the thoracic aorta, usually gained only with echocardiography or arteriography.
比较磁共振（MR）血管造影、自旋回波（SE）快速MR成像及非MR成像技术在胸主动脉检查中的应用。
89例患者接受屏气或电影MR血管造影；67例患者采用SE序列，28例采用快速MR成像。将其结果与非MR成像（49例经胸超声心动图、18例经食管超声心动图及33例动脉造影）结果以及手术或尸检（16例患者）结果进行比较。
MR血管造影能够区分缓慢血流与血栓，显示主动脉瓣解剖结构及主动脉反流情况，且仅出现1处解剖显示错误。与SE序列相比，MR血管造影能更好地显示2处交通、瓣叶及3处分支狭窄，SE序列会产生一些类似血栓或瓣叶的伪影。快速MR成像常产生伪影或图像质量较差（28例患者中有10例）。
与SE MR成像相比，MR血管造影可提供有关胸主动脉疾病额外的有用解剖及功能信息，这些信息通常仅通过超声心动图或动脉造影才能获得。
