Ros Mendoza L H, Mayayo E, Solsona I, Ros R P
Departamento de Radiología, Hospital Miguel Servet, Zaragoza, España.
Arch Esp Urol. 2001 Jul-Aug;54(6):555-82.
To establish the role of MRI in renal disease, its indications, advantages and disadvantages. To briefly describe the main MRI techniques and renal features depicted on MRI before and after administration of a contrast agent, and present the MRI findings in different renal conditions.
The images were obtained with the GE MR 0, 5 T. T1- and T2-weighted spin echo and echo gradient sequences were utilized according to the protocol described in the article.
RESULTS/CONCLUSIONS: MRI is very useful in the study of renal disease due to its high spatial resolution. Its cost, and because it is not widely available, have limited the indications of MRI to those cases whose diagnosis cannot be established by other imaging techniques (US and CT) and patients in whom iodated contrast material (i.e., allergy to iodine or renal failure) or ionizing radiation (i.e., pregnancy) is contraindicated. MR has a high diagnostic reliability in the evaluation of the extent of the renal tumors. MR angiography and MR urography permit adequate and non-invasive assessment of the vascular and collecting systems without the need to utilize iodated contrast agents.
确定磁共振成像（MRI）在肾脏疾病中的作用、其适应证、优缺点。简要描述主要的MRI技术以及注射造影剂前后MRI所显示的肾脏特征，并展示不同肾脏疾病的MRI表现。
使用GE 0.5T MR获取图像。根据文章中描述的方案，采用T1加权和T2加权自旋回波以及回波梯度序列。
结果/结论：由于其高空间分辨率，MRI在肾脏疾病研究中非常有用。其成本以及可用性不广泛，使得MRI的适应证仅限于那些无法通过其他成像技术（超声和CT）确诊的病例以及对碘造影剂（即碘过敏或肾衰竭）或电离辐射（即怀孕）禁忌的患者。MR在评估肾肿瘤范围方面具有较高的诊断可靠性。磁共振血管造影和磁共振尿路造影能够对血管和集合系统进行充分且无创的评估，而无需使用碘造影剂。
