Pediatric Imaging - Original Article 2016

MR urography in pediatric uropathies with dilated urinary tracts

  • Murat Kocaoğlu
  • Ahmet Turan Ilıca
  • Nail Bulakbaşı
  • Atilla Ergin
  • Bahri Üstünsöz
  • Tuba Sanal
  • Cem Tayfun
  • İbrahim Somuncu

Received Date: 03.05.2005 Accepted Date: 04.07.2005 Diagn Interv Radiol 2005;11(4):225-232


To determine the diagnostic value of magnetic resonance (MR) urography in children with urinary tract dilatation.


Twenty-five children between the ages of 4 months and 13 years (19 males and 6 females, mean age 6.5 years) were evaluated with T2 weighted and contrastenhanced T1 weighted MR sequences. Results were compared with findings obtained with ultrasonography (n=25), intravenous urography (n=18), Tc99m- DTPA scintigraphy (n=16), and/or micturating cystouretrography (n=13).


MR urography provided a superior imaging of urinary system dilatation, the site and the etiology of obstruction, and both regular and complicated kidney duplication than did conventional imaging methods. MR urography that used T2 weighted sequences was able to demonstrate 29 of 32 (90.6%) abnormal renal collecting systems. Fourteen of 21 (66.7%) normal systems were revealed by heavily T2 weighted images. Forty-six of 51 (90.2%) renal collecting systems could be shown by T1 weighted sequences. With this sequence, however, five collecting systems (9.8%) could not be shown secondary to poor renal function and/or dilution of contrast agent within the dilated urinary tract.


In children, MR urography may replace conventional uroradiological methods.

Keywords: kidney, magnetic resonance imaging, pediatrics, urinary tract