scholarly journals Magnetic resonance urography in the evaluation of obstructive uropathy

2018 ◽  
Vol 8 (2) ◽  
pp. 91
Author(s):  
Mohd Ilyas ◽  
Irshad Ahmad ◽  
Insha Khan ◽  
Irfan Robbani ◽  
BaldevS Wazir
Keyword(s):  
Magnetic Resonance ◽  
Obstructive Uropathy ◽  
Magnetic Resonance Urography

PEMERIKSAAN STATIC FLUID MAGNETIC RESONANCE UROGRAPHY PADA ANAK DENGAN DUGAAN OBSTRUKSI TRAKTUS URINARIUS

2020 ◽  
Vol 4 (1) ◽  
pp. 37-42
Author(s):  
Nydia Rusli ◽  
Bambang Soeprijanto ◽  
Indrastuti Normahayu
Keyword(s):  
Urinary Tract ◽  
Magnetic Resonance ◽  
Obstructive Uropathy ◽  
Contrast Material ◽  
Three Dimensional ◽  
Voiding Cystourethrogram ◽  
Magnetic Resonance Urography ◽  
Dimensional Reconstruction ◽  
Static Fluid ◽  
Collecting System

Background : Static fluid Magnetic Resonance Urography (MRU) treats the urinary tract as a static column of fluid, using one of a variety of T2-weighted sequences that exploit the long T2 relaxation time of urine. It does not require the excretion of contrast material and is therefore useful for demonstrating the collecting system and ureter of an obstructed urinary tract. Static fluid MRU provides good morphology visualization and multiplanar three-dimensional reconstruction capability. Aim of study : To display the excellence of static fluid MRU in visualization of dilatated urinary tract segments in pediatric cases with suspectedurinary obstruction. Methods : Nine pediatric patients with suspected obstructive uropathy (as suggested by ultrasound) were included in this case study. The examinations were performed with 1.5T MR scanners using static fluid T2-weighted MRU sequence. Ultrasound examinations were done forall patients. Voiding cystourethrogram was done for 3 patients. Results : Eight studied patients had dilated collecting systems. Static fluid MRU can provide detailed structural assessment of dilatatedcollecting systems. It was superior to ultrasound in evaluation of obstructive double collecting system, ureteral ectopia, ureteral obstructionand massive hydroureteronephrosis.

The Role of Static Magnetic Resonance Urography in the Evaluation of Obstructive Uropathy

Urology ◽  
2013 ◽  
Vol 81 (3) ◽  
pp. 623-628 ◽  
Author(s):  
Prakash Muthusami ◽  
Venkatesan Bhuvaneswari ◽  
Sundararajan Elangovan ◽  
Lalgudi N. Dorairajan ◽  
Ananthakrishnan Ramesh
Keyword(s):  
Magnetic Resonance ◽  
Obstructive Uropathy ◽  
Magnetic Resonance Urography

scholarly journals Magnetic Resonance Urography in Obstructive Uropathy

2008 ◽  
Vol 64 (2) ◽  
pp. 145-147 ◽  
Author(s):  
KK Sen ◽  
C Mohan ◽  
BS Verma
Keyword(s):  
Magnetic Resonance ◽  
Obstructive Uropathy ◽  
Magnetic Resonance Urography

Detection of obstructive uropathy and assessment of differential renal function using two functional magnetic resonance urography tools

2017 ◽  
Vol 56 (01) ◽  
pp. 39-46 ◽  
Author(s):  
Ingo G. Steffen ◽  
Grit Neumann ◽  
Ivayla Apostolova ◽  
Juri Ruf ◽  
Anke Rißmann ◽  
...  
Keyword(s):  
Renal Function ◽  
Magnetic Resonance ◽  
Obstructive Uropathy ◽  
Infants And Children ◽  
Functional Magnetic Resonance ◽  
Magnetic Resonance Urography ◽  
Predictive Values ◽  
Differential Renal Function ◽  
Functional Magnetic Resonance Urography ◽  
In Infants And Children

Summary Aim: After detection of obstructive uropathy (OU), the indication for or against surgery is primarily based on the differential renal function (DRF). This is to compare functional magnetic resonance urography (fMRU) with dynamic renal scintigraphy (DRS) to assess OU and DRF in infants and children. Patients, methods: Retrospective analysis in 30 patients (female: 16; male: 14; median age: 5.5 years [0.2-16.5]), divided into subgroup A (age: 0-2 years; n = 16) and B (> 2-17 years; n = 14). fMRU was assessed by measuring renal transit time (RTT) and volumetric DRF with CHOP fMRU tool (CT) and ImageJ MRU plug-in (IJ). OU detection by fMRU was compared with DRS (standard of reference) using areas under the curves (AUC) in ROC analyses. Concordant DRF was assumed if absolute deviation between fMRU and DRS was < 5 %. Results: DRS confirmed fixed OU in 4/31 kidneys (12.9 %) in subgroup A. AUC of CT was 0.94 compared with 0.93 by IJ. Subgroup B showed fixed OU in 1/21 kidneys (4.8 %) with AUCs of 0.98 each. RTT measured neither by CT nor by IJ in confirmed fixed OU was < 1200 s – resulting in negative predictive values of 1.0 each. In subgroup A, DRF was concordant in 81.3 % of the kidneys for CT and DRS compared with 75.0 % for IJ and DRS. In subgroup B, CT and DRS were concordant in 91.7 %, and IJ and DRS in 45.8 % of the kidneys. Conclusion: fMRU accurately excluded fixed OU in infants and children, independent from the software used for quantification. However, assessment of DRF with fMRU deviated from DRS especially in infants who may profit most from early intervention. Thus, fMRU cannot fully replace DRS as primary functional examination. If, for clinical reasons, fMRU is performed in first place and it cannot exclude fixed OU, it should be followed by DRS for validation and DRF quantification.

756: Magnetic Resonance Urography in the Management of Primary Megaureters and Ectopic Ureters

2006 ◽  
Vol 175 (4S) ◽  
pp. 246-246
Author(s):  
Leah P. McMann ◽  
J. Damien Grattan-Smith ◽  
Richard A. Jones ◽  
Hal C. Scherz ◽  
Edwin A. Smith ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Urography ◽  
Ectopic Ureters

Bilateral duplex urinary collecting systems accompanied with horseshoe kidneys deformity and right renal ureteral calculi and hydronephrosis: Diagnosis in magnetic resonance urography

2017 ◽  
Vol 25 (4) ◽  
pp. 667-672 ◽  
Author(s):  
Yi Yu ◽  
Jianlong Li ◽  
Lian Guo ◽  
Taifu Gu ◽  
Ruihai Xiao ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Ureteral Calculi ◽  
Magnetic Resonance Urography

Efficacy of magnetic resonance urography in detecting renal scars in children with vesicoureteral reflux

2014 ◽  
Vol 29 (7) ◽  
pp. 1215-1220 ◽  
Author(s):  
Ali Koçyiğit ◽  
Selçuk Yüksel ◽  
Recep Bayram ◽  
İsmail Yılmaz ◽  
Nevzat Karabulut
Keyword(s):  
Magnetic Resonance ◽  
Vesicoureteral Reflux ◽  
Magnetic Resonance Urography ◽  
Renal Scars
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