Related Experiment Video
Updated: May 6, 2026

Author Spotlight: Developing a Bedside Protocol for Kidney and Genitourinary Ultrasonography
Published on: June 21, 2024
Magnetic resonance urography in evaluation of duplicated renal collecting systems
Melkamu Adeb1, Kassa Darge, Jonathan R Dillman
1Division of Body Imaging, Department of Radiology, The Children's Hospital of Philadelphia, 34th Street and Civic Center Boulevard, Philadelphia, PA 19104, USA.
Abstract:
Duplex renal collecting systems are common congenital anomalies of the upper urinary tract. In most cases they are incidental findings and not associated with additional pathologies. They demonstrate, however, higher incidences of hydroureteronephrosis, ureteroceles, and ectopic ureters. The most comprehensive morphologic and functional evaluation of duplex systems can be achieved using magnetic resonance urography. Functional magnetic resonance urography allows better separation of the renal poles, thus more accurate calculation of the differential renal functions compared with renal scintigraphy. Magnetic resonance urography is the study of choice when upper urinary tract anatomy is complex or when functional evaluation is needed.
Related Concept Videos
Imaging Studies IV: Magnetic Resonance Imaging
Imaging Studies II: Ultrasonography
Imaging Studies V: Intravenous Urography and Retrograde Pyelography
Imaging Studies I: Kidney, Ureter, and Bladder Studies
Imaging Studies III: Computed Tomography
Imaging Studies VI: Voiding Cystourethrography and Cystography

