Nyman R, Hallberg M, Sunnegårdh J, Thurén J, Henze A
Department of Diagnostic Radiology, Akademiska Sjukhuset, University of Uppsala, Sweden.
Acta Radiol. 1989 Sep-Oct;30(5):481-5.
Fifteen patients ranging in age from 9 to 25 years (median age 10 years), with coarctation of the aorta, were investigated with magnetic resonance (MR) imaging pre- and postoperatively. Three patients were examined because of suggested re-stenosis. Both MR examination and cineangiography were performed in 11 patients. The two techniques were comparable concerning the evaluation of both the site and the severity of coarctation as well as of the occurrence of collateral vessels. MR was considered suitable to replace angiography in the pre- and postoperative assessment of coarctation. The patients were preferably examined with a surface spine coil with ECG-gated sagittal, transverse and parafrontal images. The parafrontal images were necessary in order to minimize mistakes due to partial volume effects at the coarctation site. A surface coil placed over the sternum considerably improved the visualization of the internal mammary arteries.
对15例年龄在9至25岁（中位年龄10岁）的主动脉缩窄患者进行了术前和术后磁共振（MR）成像检查。3例患者因提示再狭窄而接受检查。11例患者同时进行了MR检查和电影血管造影。两种技术在评估缩窄部位、严重程度以及侧支血管的出现方面具有可比性。在主动脉缩窄的术前和术后评估中，MR被认为适合替代血管造影。患者最好使用带有心电图门控的矢状面、横断面和额旁面图像的表面脊柱线圈进行检查。额旁面图像对于尽量减少由于缩窄部位的部分容积效应导致的错误是必要的。置于胸骨上方的表面线圈显著改善了胸廓内动脉的可视化。
