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磁共振尿路造影

Magnetic resonance urography.

作者信息

Leyendecker John R, Gianini John W

机构信息

Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157, USA.

出版信息

Abdom Imaging. 2009 Jul;34(4):527-40. doi: 10.1007/s00261-008-9403-9.

Abstract

Excellent contrast resolution and lack of ionizing radiation make magnetic resonance urography (MRU) a promising technique for noninvasively evaluating the entire urinary tract. While MRU currently lags behind CT urography (CTU) in spatial resolution and efficiency, new hardware and sequence developments have contributed to a resurgence of interest in MRU techniques. By combining unenhanced sequences with multiphase contrast-enhanced and excretory phase imaging, a comprehensive assessment of the kidneys, ureters, bladder, and surrounding structures is possible with image quality rivaling that obtained with other techniques. At the same time, formidable challenges remain to be overcome and further clinical validation is necessary before MRU can replace other forms of urography. In this article, we demonstrate the current potential of MRU to demonstrate a spectrum of urologic pathology involving the kidneys, ureters, and bladder while discussing the limitations and current status of this evolving technique.

摘要

出色的对比分辨率和无电离辐射特性使磁共振尿路造影(MRU)成为一种用于非侵入性评估整个尿路的有前景的技术。虽然目前MRU在空间分辨率和效率方面落后于CT尿路造影(CTU),但新的硬件和序列发展促使人们对MRU技术重新产生兴趣。通过将未增强序列与多期对比增强和排泄期成像相结合,可以对肾脏、输尿管、膀胱及周围结构进行全面评估,其图像质量可与其他技术相媲美。与此同时,在MRU能够取代其他形式的尿路造影之前,仍有巨大挑战有待克服,还需要进一步的临床验证。在本文中,我们展示了MRU目前在显示涉及肾脏、输尿管和膀胱的一系列泌尿系统病理方面的潜力,同时讨论了这种不断发展的技术的局限性和现状。

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