title: [RARE-MR urography: a rapid MR tomographic imaging procedure for the diagnosis of urinary tract malformations in childhood].
abstract: RARE-MR urography (so called "water-pictures") is a fast MR imaging technique that selectively depicts fluid without contrast application. Acquisition time is 6.4 s per slice with 1 excitation, or 23 s per slice with 2 averages respectively. From Sept. 1989 to April 1990 24 children with anomalies of the urinary tract have been examined each by RARE MR urography and one T1-weighted spin-echo sequence. Independent of excretory function, the technique can show dilated calices and renal pelvis, pelviureteric obstruction, renal duplication, and megaureter. However, it cannot distinguish between vesicoureteric reflux and obstructive megaureter. Our first results suggest that RARE MR urography combined with ultrasound, reflux cystography and isotope nephrography, can replace excretory urography in certain circumstances--or at least postpone it to the preoperative phase.
authors.affiliation: Abteilung Röntgendiagnostik, Chirurgische Universitätsklinik Freiburg.
authors.forename: G
authors.initials: G
authors.lastname: Sigmund
authors.forename: B
authors.initials: B
authors.lastname: Stöver
authors.forename: L B
authors.initials: LB
authors.lastname: Zimmerhackl
authors.forename: A
authors.initials: A
authors.lastname: Frankenschmidt
authors.forename: E
authors.initials: E
authors.lastname: Nitzsche
authors.forename: J U
authors.initials: JU
authors.lastname: Leititis
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D011446:Prospective Studies; D014551:Urinary Tract / Q000002:abnormalities* / Q000473:pathology*
vernacular_title: RARE-MR-Urographie: ein kernspintomographisches Schnellbildverfahren zur Diagnostik von Harnwegsfehlbildungen im Kindesalter.