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Functional MR urography in patients with kidney transplantation

M. Knopp, J. Dörsam, N. Oesingmann, S. Piesche, H. Hawighorst, M. Wiesel, L. Schad and G. van Kaick

Radiologe, 37 (3), pp.233-238

PURPOSE: To assess the value of functional magnetic resonance urology for the noninvasive postoperative evaluation of renal transplants. METHODS: A saturation inversion projection sequence allows the selective imaging of strongly T1 weighted signal from the MR contrast agent. A control slab leads to images comparable to conventional urography which can be acquired as a sequence with four images per minute. RESULTS: 15 patients with urologic questionable findings after renal transplantation were studied. FMRU revealed in 6 patients normal findings, in 6 moderate dilatation of the renal pelvis without any urodynamic relevant obstruction. 3 pathologic findings, ureteral leak, ureteropelvic-junction obstruction and ureteral stenosis were diagnosed and consequently surgically treated. The imaging quality in all studies was diagnostic and urologically relevant. CONCLUSION: FMRU can be used as a noninvasive technique for the assessment of renal transplant in cases with suspicion of complication in the excretory system.

Contact: Dr. Frank Zöllner last modified: 22.05.2019
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