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Hyperfunctioning and nonhyperfunctioning benign adrenal cortical lesions: characterization and comparison with MR

E M Remer1, R M Weinfeld, G M Glazer

  • 1Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109.

Radiology
|June 1, 1989
PubMed
Summary
This summary is machine-generated.

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Magnetic resonance (MR) imaging at 0.35 T cannot reliably differentiate hyperfunctioning adrenal cortical lesions from nonhyperfunctioning adenomas. Quantitative and qualitative MR data showed limited success in distinguishing these adrenal lesions.

Area of Science:

  • Radiology
  • Endocrinology
  • Medical Imaging

Background:

  • Adrenal cortical lesions require accurate differentiation for appropriate patient management.
  • Distinguishing hyperfunctioning from nonhyperfunctioning adrenal adenomas is clinically significant.

Purpose of the Study:

  • To evaluate the efficacy of 0.35 T magnetic resonance (MR) imaging in differentiating hyperfunctioning from nonhyperfunctioning adrenal cortical lesions.
  • To assess both qualitative and quantitative MR parameters for tissue characterization of adrenal lesions.

Main Methods:

  • Utilized 0.35 T MR imaging for tissue characterization of nine hyperfunctioning and 21 nonhyperfunctioning adrenal cortical adenomas.
  • Employed qualitative visual assessment and quantitative analysis including signal intensity ratios, T1, and T2 values.

Related Experiment Videos

  • Analyzed specific MR sequences (2,000/56-100 and 2,000/150) for lesion characterization.

    • Main Results:

    • Most lesions appeared isointense to liver on MR imaging using the 2,000/56-100 sequence.
    • Limited statistically significant differences were observed in lesion-liver and lesion-kidney intensity ratios at 2,000/150.
    • The significance of observed quantitative differences was questioned due to high noise levels in the 2,000/150 sequence.

    Conclusions:

    • Magnetic resonance (MR) imaging at 0.35 T is not effective in distinguishing nonhyperfunctioning adrenal cortical adenomas from benign hyperfunctioning cortical lesions.
    • Further research with higher field strength MR imaging may be necessary for improved differentiation.