Evaluation of renal masses with contrast-enhanced rapid acquisition spin echo MR imaging

Steven S. Eilenberg, Jefferey J. Brown, Joseph K.T. Lee, Jay P. Heiken, Scott A. Mirowitz

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

To assess the use of dynamic contrast-enhanced rapid acquisition spin-echo (RASE) imaging for the detection and characterization of renal masses, we evaluated 18 patients with CT evidence of 67 renal masses. The masses included 58 simple cysts, 8 solid neoplasms, and 1 pseudotumor. Patients were examined with standard spin-echo (SE) pulse sequences including pre- and postcontrast T1-weighted images and noncontrast T2-weighted images as well as pre- and postcontrast RASE images. Each pulse sequence was reviewed individually and in a group with other pulse sequences by two blinded observers. The performance of contrast-enhanced RASE imaging either alone or in combination with a T2-weighted SE sequence resulted in improved diagnostic accuracy compared with unenhanced conventional SE and RASE sequences. The contrast-enhanced RASE sequence outperformed the contrast-enhanced T1-weighted SE sequence for one observer; similar diagnostic accuracy was achieved with the two examinations by the other observer. Combining the T2-weighted sequence with contrast-enhanced RASE images did not increase lesion detection but did increase the observers' confidence in making the diagnosis. Contrast-enhanced MR imaging resulted in significant improvement in the detection and characterization of renal lesions compared to unenhanced MR imaging.

Original languageEnglish (US)
Pages (from-to)7-16
Number of pages10
JournalMagnetic Resonance Imaging
Volume11
Issue number1
DOIs
StatePublished - 1993

Keywords

  • Kidney neoplasms, MR studies
  • Kidney neoplasms, diagnosis
  • Kidney, MR studies

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

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