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MR urography: the future gold standard in paediatric urogenital imaging?

A Borthne1, T Nordshus, T Reiseter

  • 1Department of Paediatric Radiology, Ullevaal University Hospital, N-0407 Oslo, Norway.

Pediatric Radiology
|August 25, 1999
PubMed

Insights

Magnetic resonance urography (MRU) shows promise in diagnosing paediatric urinary tract conditions, potentially replacing radiation-based imaging. Further research is needed to confirm its effectiveness and establish definitive conclusions.

Area of Science:

  • Medical Imaging
  • Paediatric Radiology
  • Urology

Background:

  • Traditional paediatric urogenital tract examinations often involve ionizing radiation (IVU, CT, VCU, scintigraphy) alongside ultrasound (US).
  • There is a need for alternative diagnostic methods that minimize radiation exposure in children.

Purpose of the Study:

  • To evaluate the potential and effectiveness of Magnetic Resonance Urography (MRU) for diagnosing infants and children with urinary tract pathologies.
  • To compare MRU with traditional methods, particularly scintigraphy, in cases of suspected urinary tract obstruction.

Main Methods:

  • Prospective study of 44 MRU examinations in 39 paediatric patients (21 infants, 18 children) with suspected urinary tract issues.
  • Utilized non-enhanced fast spin-echo (TSE) sequences in all patients, with contrast-enhanced fast gradient-echo (TFE) sequences in 70%.
  • Included prolonged dynamic sequences and furosemide provocation in select cases of suspected obstruction.

Main Results:

  • MRU was non-diagnostic or interrupted in 9% of examinations due to patient movement.
  • MRU provided additional diagnostic information in 66% of cases.
  • In suspected obstruction, contrast-enhanced MRU was comparable or superior to scintigraphy when employing prolonged dynamic sequences with furosemide provocation.

Conclusions:

  • MRU demonstrates potential as a non-ionizing radiation alternative for paediatric urinary tract imaging.
  • Further investigation is required to solidify MRU's role and draw definitive conclusions regarding its diagnostic superiority.
Abstract

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