Leppert A, Nadalin S, Schirg E, Petersen C, Kardorff R, Galanski M, Fuchs J
Department of Diagnostic Radiology, Medizinische Hochschule Hannover, Germany.
J Pediatr Surg. 2002 Oct;37(10):1441-5. doi: 10.1053/jpsu.2002.35408.
The aim of this study was to determine the role of magnetic resonance urography (MRU) in preoperative diagnostic workup of children with hydronephrosis in a prospective clinical study with comparison of MRU, standard diagnostic investigations, and intraoperative findings.
Thirty-one children with hydronephrosis secondary to different causes underwent ultrasound scan (US), intravenous urography (IVU), micturation cysto-urethrography (MCU), isotope nephrography (ING) and MRU. For MRU the authors performed sagittal and coronal halve-Fourier SSFSE scans in a 1.5 Tesla MR system. T1- and T2-weighted sequences were used in axial orientation to improve morphologic information. In 24 patients, preoperative data were compared with intraoperative findings.
Comparison of the different imaging modalities proved MRU to be able to provide more detailed information about the correct localization of stenoses along the urinary tract and the morphology of renal parenchyma. MRU showed the highest concordance of all imaging modalities with intraoperative findings.
As a reliable investigation, MRU has the potentials to replace IVU in preoperative diagnostic workup of hydronephrosis in childhood.
本研究旨在通过一项前瞻性临床研究，比较磁共振尿路造影（MRU）、标准诊断检查和术中发现，以确定MRU在儿童肾积水术前诊断检查中的作用。
31例因不同原因导致肾积水的儿童接受了超声扫描（US）、静脉肾盂造影（IVU）、排尿性膀胱尿道造影（MCU）、同位素肾图（ING）和MRU检查。对于MRU，作者在1.5特斯拉MR系统中进行矢状位和冠状位半傅里叶单次激发快速自旋回波扫描。在轴位方向使用T1加权和T2加权序列以改善形态学信息。24例患者的术前数据与术中发现进行了比较。
不同成像方式的比较证明，MRU能够提供有关尿路狭窄的正确定位和肾实质形态的更详细信息。MRU在所有成像方式中与术中发现的一致性最高。
作为一种可靠的检查方法，MRU有潜力在儿童肾积水的术前诊断检查中取代IVU。
