Magnetic Resonance Voiding Cystography in the Diagnosis of Vesicoureteral Reflux: Comparative Study with Voiding Cystourethrography.
- Author:
Sang Kwon LEE
1
;
Yongmin CHANG
;
Ja Hoon KOO
;
Cheol Woo KO
;
Sung Kwang CHUNG
;
Tae Hun KIM
;
Kyung Sik SOHN
;
Chang Hyun LEE
;
Young Hwan KIM
Author Information
1. Department of Radiology, College of Medicine, Kyungpook National University.
- Publication Type:Comparative Study ; Original Article
- Keywords:
Voiding cystourethrography;
Ureter;
reflux;
Kidney, MR;
Magnetic resonance (MR);
comparative studies
- MeSH:
Child;
Cicatrix;
Diagnosis*;
Gadolinium DTPA;
Humans;
Kidney;
Ureter;
Vesico-Ureteral Reflux*
- From:Journal of the Korean Society of Magnetic Resonance in Medicine
2000;4(2):85-93
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the availability of magnetic resonance (MR) voiding cystography for the diagnosis of vesicoureteral reflux (VUR) and to compare the sensitivity of MR voiding cystography (MRVC) with that of radiographic voiding cystourethrography (VCUG) in the detection of VUR. MATERIALS AND METHODS: MRVC was performed upon 20 children referred for investigation of VUR. Either coronal T1-weighted spin-echo or spoiled gradient-echo images were obtained before and after transurethral administration of a mixture of normal saline and gadopentetate dimeglumine, and immediately after voiding. The findings of MRVC were compared with those of VCUG performed within 6 months of MRVC. RESULTS: VUR was detected in 23 ureterorenal units (16 VUR's by both methods, five VUR's by VCUG, and two VUR's by MRVC). The sensitivity of VCUG and MRVC in detecting VUR was 91.3% (21/23) and 78.3% (18/23), respectively. MRVC detected renal scarring in 15 out of 17 kidneys with scintigraphically detected renal scarring. CONCLUSION: Although MRVC is slightly less sensitive than VCUG in the detection of VUR, it can be used for the diagnosis of VUR and renal scarring simultaneously, and thus will reduce the radiation hazard.
