Amendola M A
Department of Radiology, University of Pennsylvania School of Medicine and Hospital, Philadelphia.
Crit Rev Diagn Imaging. 1989;29(2):117-50.
The present status of magnetic resonance imaging (MRI) in the evaluation of renal masses, especially as compared to computed tomography (CT) is discussed based on our experience and on a review of the literature. It is already apparent that simple renal cysts, hemorrhagic cysts, and fatty renal masses are well demonstrated by MRI. However, other modalities, and particularly CT, have similar degrees of accuracy, are more widely available, and are less expensive. So, currently, MRI has not been proven to be an optional screening method for detection of renal masses. At present, the major clinical uses of MRI are (1) the staging of renal carcinoma, in which MRI appears slightly superior to CT, (2) in patients with known contraindications to the use of iodinated contrast medium, (3) in patients with suspected renal carcinomas in which results from other imaging modalities are atypical or indeterminate, and (4) when sagittal or coronal imaging is desirable.
基于我们的经验以及对文献的回顾，本文讨论了磁共振成像（MRI）在评估肾肿块方面的现状，尤其是与计算机断层扫描（CT）相比的情况。很明显，单纯性肾囊肿、出血性囊肿和肾脂肪性肿块在MRI上显示良好。然而，其他检查方式，尤其是CT，具有相似的准确度，应用更为广泛，且成本更低。所以，目前尚未证明MRI是检测肾肿块的首选筛查方法。目前，MRI的主要临床用途包括：（1）肾癌分期，MRI在这方面似乎略优于CT；（2）适用于已知对使用碘化造影剂有禁忌证的患者；（3）适用于其他成像方式结果不典型或不确定的疑似肾癌患者；（4）需要矢状面或冠状面成像时。
