Magnetic resonance urography in the assesment of congenital urinary system dilatation in pediatric patients

Authors : Rabia KILINÇ, İrmak DURUR SUBAŞI, Afak DURUR KAYA

Pages : 215-223

Doi:10.5835/jecm.omu.30.03.002

View : 63 | Download : 6

Publication Date : 2013-11-05

Article Type : Research Paper

Abstract :The aim of this study is to assess combined static-dynamic magnetic resonance insert ignore into journalissuearticles values(MR); urography in the evaluation of urinary tract anomalies in infants and children. Thirthynine patients with urinary tract anomalies underwent retrospective examination between 2009- 2012, with combined static dynamic MR urography. A combination examination involved use of a static T2-weighted thick slap spin-echo sequence and a dynamic T1-weighted tree-dimensional spoiled gradient echo- recalled sequence with gadopentetate dimeglumine-DTPA and furosemide application. Morphologic results were compared with those of ultrasonography and, when available, surgery. The dynamic sequence was used to calculate renal transit time insert ignore into journalissuearticles values(RTT);, split renal function from renograms generated from parenchymal regions of interest and to assess urinary excretion from whole-kidney renograms. Results were compared with those of diuretic renal scintigraphy for split function and urinary excretion. Urinary system dilatations caused by stenosis at the ureteropelvic insert ignore into journalissuearticles values(n=16);, ureterovesical insert ignore into journalissuearticles values(n=4); junctions and within the ureter insert ignore into journalissuearticles values(n=6);, posterior urethral valve insert ignore into journalissuearticles values(n=1);, postoperative urethral obstruction insert ignore into journalissuearticles values(n=1);, neurogenic bladder insert ignore into journalissuearticles values(n=1); and nonstenotic dilatation insert ignore into journalissuearticles values(n=4); and urinary tract anomalies, double collecting system insert ignore into journalissuearticles values(n=4); and isolated urinary tract anomalies insert ignore into journalissuearticles values(n=2); were clearly depicted. For morphologic evaluation, sensivity of MR urography compared with surgery calculated 82.75% and for split renal function, sensivity of dynamic MR urography compared with diuretic renal scintigraphy insert ignore into journalissuearticles values(DRS); calculated 80%. For urinary excretion, MR urography and DRS showed strong agreement. MR urografi is a modality with which urinary system pathologies could be both morphologically and functionally evaluated with high accuracy and does not use ionizing radiation. But it has disadvantages for example, children need sedation during examination, results cannot be compared with enough clinical trials because of ethical reasons and some technical incapabilities. But we think with some technical improvements, MR urography can be applied in diagnosis and follow up of urinary system abnormalities in children with high degree of confidency.
Keywords : Magnetic resonance functional imaging, Magnetic resonance urography, Pediatric patient, Urinary anomalies

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