Rholl K S, Levitt R G, Glazer H S, Gutierrez F R, Murphy W A, Lee J K, Geltman E M, Peterson R R
Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO 63110.
Radiographics. 1986 Mar;6(2):177-88. doi: 10.1148/radiographics.6.2.3685488.
This exhibit demonstrates that cardiac anatomy can be imaged by MRI in oblique planes that are equivalent to views obtained radiographically or at angiocardiography. These MR images may be obtained either by simple patient positioning or by electronic rotation of the imaging axis. The advantages of this technique include its simplicity and its ability to show detailed anatomy noninvasively. Major cardiac structures including chambers, walls, vessels and bronchi are optimally demonstrated in long axis or cross section. This permits estimation of chamber volume, wall thickness, vessel position and variations from normal. Smaller structures are also well visualized. These include the pericardium, papillary muscles, azygos vein and some cross sectional anatomy of the coronary arteries and veins. The valvular structures can be shown during diastole or systole. The ability of MRI to show these cardiac structures due to the intrinsic contrast differences in signal intensity between muscle, fat, flowing blood and lung suggest an important future for MR cardiac imaging in a broad group of congenital and acquired diseases of the heart, pericardium and great vessels.
本展示表明，心脏解剖结构可通过磁共振成像（MRI）在与X线摄影或心血管造影所获视角等效的斜平面上成像。这些磁共振图像可通过简单的患者体位摆放或成像轴的电子旋转来获取。该技术的优点包括其简单性以及无创显示详细解剖结构的能力。包括心腔、心肌壁、血管和支气管在内的主要心脏结构在长轴或横切面上能得到最佳显示。这有助于估计心腔容积、心肌壁厚度、血管位置以及与正常情况的差异。较小的结构也能清晰显示。这些结构包括心包、乳头肌、奇静脉以及冠状动脉和静脉的一些横断面解剖结构。瓣膜结构可在舒张期或收缩期显示。由于肌肉、脂肪、流动血液和肺之间信号强度存在内在对比度差异，MRI能够显示这些心脏结构，这表明MR心脏成像在一大类先天性和后天性心脏、心包及大血管疾病中有着重要的未来发展前景。
