Kilcoyne R F, Richardson M L, Porter B A, Olson D O, Greenlee T K, Lanzer W
Department of Radiology, University of Washington, Seattle.
Clin Orthop Relat Res. 1988 Mar(228):13-9.
Twenty-nine soft tissue masses were studied with magnetic resonance imaging (MRI) which proved to be useful in the preoperative evaluation of these lesions. Other imaging modalities employed had significant limitations. Plain films were of little value because of the intrinsically low contrast of soft tissues. Angiography was not necessary unless MRI suggested a vascular lesion or proximity to major blood vessels. Computed tomography (CT) and MRI both readily identified fatty lesions and their relationship to adjacent structures. Some soft tissue tumors could not be delineated from normal muscle with CT, but were easily seen with MRI. MRI is ideally suited for the study of suspected soft tissue tumors because of its excellent soft tissue contrast and its ability to image directly in any plane. Optimum evaluation required imaging in at least two planes with spin echo sequences chosen to bring out both T1 and T2 features.
对29个软组织肿块进行了磁共振成像（MRI）研究，结果证明MRI在这些病变的术前评估中很有用。所采用的其他成像方式有明显局限性。平片价值不大，因为软组织本身对比度低。除非MRI提示有血管病变或靠近主要血管，否则血管造影没有必要。计算机断层扫描（CT）和MRI都能很容易地识别脂肪性病变及其与相邻结构的关系。一些软组织肿瘤用CT无法与正常肌肉区分，但用MRI很容易看到。由于其出色的软组织对比度和在任何平面直接成像的能力，MRI非常适合用于研究疑似软组织肿瘤。最佳评估需要至少在两个平面成像，并选择自旋回波序列以显示T1和T2特征。
