MR IMAGING OF THE AORTIC ROOT AND PROXIMAL CORONARY-ARTERIES
MR IMAGING OF THE AORTIC ROOT AND PROXIMAL CORONARY-ARTERIES
复制标题
DOI：
10.2214/ajr.148.4.665
复制
发表时间：
1987-04-01
影响因子：
5
通讯作者：
KRAYENBUEHL, HP
中科院分区：
文献类型：
--
作者：
PAULIN, S;VONSCHULTHESS, GK;KRAYENBUEHL, HP
6例近期接受选择性冠状动脉和左心室造影的患者前瞻性地进行了MR检查，以显示主动脉根部和近端冠状动脉。检查采用1.5T仪器，自旋回波序列和ECG门控多层5 mm厚。扫描的位置和平面方向由初始冠状动脉MR定位扫描的结果和血管造影片的审查指导。在6例患者中的4例中，确定了两个冠状动脉开口和两个冠状动脉的近端厘米。其余2例仅可见左近端冠状动脉。尽管可检测到冠状动脉主干和分支的更多外周部位的节段，但在不了解血管造影解剖结构的情况下进行前瞻性和结论性识别以及结论性识别将是极其困难的。观察到鉴别诊断问题，如心包凹陷和冠状静脉的错误解释。两例右冠状动脉开口的显示不成功，与血管造影片上更多位于外周的血管闭塞相吻合。磁共振自旋回波序列似乎是不满意的诊断冠状动脉疾病，但它可能是有用的其他条件，导致显着的冠状动脉扩张，如瘘和动脉瘤。
Six patients who had recently undergone selective coronary and left ventricular angiography were prospectively examined with MR to show the aortic root and proximal coronary arteries. The examinations were performed with a superconductive 1.5-T instrument with spin-echo sequences and ECG-gated multiple slices of 5-mm thickness. The location and plane direction of the scan were guided by findings on initial coronary MR scout scans and by a review of the angiograms. In four of the six patients both coronary orifices and the proximal centimeters of both coronary arteries were identified. In the remaining two, only the left proximal coronary artery was seen. Although segments of more peripherally located portions of the main coronary arteries and branches were detectable, a prospective and conclusive identification and conclusive identification without knowledge of the angiographic anatomy would have been extremely difficult. Differential diagnostic problems, such as erroneous interpretation of pericardial recesses and coronary veins, were observed. Unsuccessful demonstration of the right coronary artery orifice in two cases coincided with more peripherally located occlusion of the vessels on the angiogram. MR with spin-echo sequences appears to be unsatisfactory for diagnosis of coronary arteriosclerotic disease, but it may be useful in other conditions that result in significant coronary dilatation, such as fistulae and aneurysms.