Magnetic resonance urography (MRU) versus intravenous urography (IVU) in obstructive uropathy: a prospective study of 30 cases.

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dc.contributor.authorKhanna, P Cen_US
dc.contributor.authorKarnik, N Den_US
dc.contributor.authorJankharia, B Gen_US
dc.contributor.authorMerchant, S Aen_US
dc.contributor.authorJoshi, Anagha Ren_US
dc.contributor.authorKukreja, K Uen_US
dc.date.accessioned2005-06-27en_US
dc.date.accessioned2009-05-31T02:00:48Z
dc.date.available2005-06-27en_US
dc.date.available2009-05-31T02:00:48Z
dc.date.issued2005-06-27en_US
dc.description.abstractAIM: Intravenous Urography (IVU) as a diagnostic modality has limitations in patients of obstructive uropathy with impaired renal function. Our aim was to study the technique and diagnostic accuracy of Magnetic Resonance Urography (MRU) in obstructive uropathy and to correlate the findings with IVU. METHODOLOGY: Forty-eight patients, selected over a six-month period, based on mild to severe pelvicalyceal dilatation on screening ultrasonography, underwent an IVU; those having non-obstructive dilatation were excluded (18 patients). Thirty patients (age range 10 to 75 years) with definite obstructive dilatation underwent MRU. These were obtained using an open MRI unit (Siemens Magnetom Open Viva) with low-dose gadolinium-DTPA (0.01 mmol/kg body weight) using various MRI sequences. MRU studies were classified as 'excellent' or 'diagnostic' and data generated was compared with that of IVU. RESULTS: MRU studies were 'excellent' in twelve and 'diagnostic' in eighteen patients. Of the sixty pelvicalyceal systems (PCS) evaluated in thirty patients, there were thirty-seven calculi, nine pelvi-ureteric junction (PUJ) obstructions, six with impaired renal function, four malrotated kidneys and one each of horseshoe kidney, pancake kidney, pelvic mass (endometriomas), duplex moieties, ureterocele and vesico-ureteric reflux. MRU better depicted moderate-severe PCS dilatation, staghorn and urethral calculi, impaired renal function, extrinsic ureteric and PUJ obstruction. IVU better depicted small calculi and mild PCS dilatation. CONCLUSIONS: In these thirty patients of obstructive uropathy, low magnetic field, open MRI units and low-dose Gd-DTPA provided cost-effective MRU studies with excellent diagnostic utility. MRU scored over IVU in patients with moderate-severe dilatation, staghorn and urethral calculi, impaired renal function, extrinsic ureteric and PUJ obstruction.en_US
dc.description.affiliationDepartment of Radiology, LTMG Hospital, Sion, Mumbai 400 022.en_US
dc.identifier.citationKhanna PC, Karnik ND, Jankharia BG, Merchant SA, Joshi AR, Kukreja KU. Magnetic resonance urography (MRU) versus intravenous urography (IVU) in obstructive uropathy: a prospective study of 30 cases. Journal of the Association of Physicians of India. 2005 Jun; 53(): 527-34en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/92672
dc.language.isoengen_US
dc.source.urihttps://www.japi.orgen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshChilden_US
dc.subject.meshContrast Mediaen_US
dc.subject.meshFemaleen_US
dc.subject.meshGadolinium DTPA --diagnostic useen_US
dc.subject.meshHumansen_US
dc.subject.meshMagnetic Resonance Imagingen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshProspective Studiesen_US
dc.subject.meshSensitivity and Specificityen_US
dc.subject.meshUrographyen_US
dc.subject.meshUrologic Diseases --radiographyen_US
dc.titleMagnetic resonance urography (MRU) versus intravenous urography (IVU) in obstructive uropathy: a prospective study of 30 cases.en_US
dc.typeComparative Studyen_US
dc.typeJournal Articleen_US
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