Contrast-enhanced magnetic resonance urography at 3T: Clinical feasibility

David D. Childs, John R. Leyendecker, John Gianini, Craig Hall

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

OBJECTIVE: The objective of this study was to assess the feasibility of performing diagnostic-quality contrast-enhanced excretory magnetic resonance urography (eMRU) at 3T, examining both image quality and diagnostic accuracy for a range of urinary tract abnormalities. METHODS: The diuretic-enhanced 3T eMRUs of 37 patients were reviewed to assess for the diagnostic conspicuity of urinary tract abnormalities, extent of urinary tract visualization on excretory images, and presence and severity of image artifacts. RESULTS: Excretory images allowed greater than 75% visualization in 90.8% of renal collecting systems, 90.8% of ureters, and 82.3% of bladders. Common artifacts included susceptibility (21.3%), contrast mixing (21.3%), patient motion (20.4%), signal inhomogeneity (19.4%), and peristaltic motion (17.6%). Severe artifacts occurred in 21.6% of studies. Five of 8 urothelial neoplasms were detected, with 1 false-positive lesion in the bladder. Urolithiasis was correctly diagnosed in 7 of 9 patients. CONCLUSIONS: Although image artifacts can hamper eMRU at 3T, initial results are promising for evaluation of the urothelium.

Original languageEnglish (US)
Pages (from-to)29-36
Number of pages8
JournalJournal of Computer Assisted Tomography
Volume37
Issue number1
DOIs
StatePublished - Jan 1 2013

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Urography
Artifacts
Magnetic Resonance Spectroscopy
Urinary Tract
Urinary Bladder
Urothelium
Urolithiasis
Ureter
Diuretics
Kidney
Neoplasms

Keywords

  • 3T
  • MRI
  • urography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Contrast-enhanced magnetic resonance urography at 3T : Clinical feasibility. / Childs, David D.; Leyendecker, John R.; Gianini, John; Hall, Craig.

In: Journal of Computer Assisted Tomography, Vol. 37, No. 1, 01.01.2013, p. 29-36.

Research output: Contribution to journalArticle

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