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

Magn Reson Imaging. 1993;11(1):7-16. doi: 10.1016/0730-725x(93)90406-4.


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.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Carcinoma, Renal Cell / diagnosis*
  • Carcinoma, Renal Cell / epidemiology
  • Contrast Media
  • Drug Combinations
  • Female
  • Gadolinium
  • Gadolinium DTPA
  • Hamartoma / diagnosis*
  • Hamartoma / epidemiology
  • Humans
  • Kidney / diagnostic imaging
  • Kidney / pathology
  • Kidney Diseases, Cystic / diagnosis*
  • Kidney Diseases, Cystic / epidemiology
  • Kidney Neoplasms / diagnosis*
  • Kidney Neoplasms / epidemiology
  • Magnetic Resonance Imaging / instrumentation
  • Magnetic Resonance Imaging / methods*
  • Magnetic Resonance Imaging / statistics & numerical data
  • Male
  • Meglumine
  • Middle Aged
  • Observer Variation
  • Organometallic Compounds
  • Pentetic Acid
  • ROC Curve
  • Time Factors
  • Tomography, X-Ray Computed / instrumentation
  • Tomography, X-Ray Computed / methods
  • Tomography, X-Ray Computed / statistics & numerical data


  • Contrast Media
  • Drug Combinations
  • Organometallic Compounds
  • Meglumine
  • Pentetic Acid
  • Gadolinium
  • Gadolinium DTPA