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Related Experiment Videos

Double-echo MPGR imaging of the rotator cuff.

M Resendes1, C A Helms, R Eddy

  • 1Department of Radiology, University of California, San Francisco 94143.

Journal of Computer Assisted Tomography
|November 1, 1991
PubMed
Summary

T2-weighted gradient recalled (T2*) sequences improve shoulder imaging speed and cartilage visualization but suffer from coil-burnout artifacts. A novel double-echo sequence enhances shoulder pathology evaluation by overcoming these limitations.

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Area of Science:

  • Radiology
  • Magnetic Resonance Imaging

Background:

  • T2-weighted gradient recalled (T2*) sequences are commonly used for shoulder MRI due to faster imaging and better cartilage disorder depiction.
  • However, T2* sequences are susceptible to "coil-burnout" artifact, which obscures superficial tissues and hinders fluid detection, particularly in the subacromial bursa.

Purpose of the Study:

  • To introduce and evaluate a double-echo T2-weighted multiplanar gradient recalled sequence for improved shoulder MRI.
  • To address the limitations of standard T2* sequences, specifically coil-burnout artifact.

Main Methods:

  • Utilized double-echo T2-weighted multiplanar gradient recalled sequences for shoulder MRI.
  • Compared the efficacy of this sequence against standard T2* sequences in evaluating shoulder pathology.

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Main Results:

  • The novel sequence demonstrates potential for better evaluation of shoulder pathology.
  • It mitigates the issue of coil-burnout artifact, allowing for clearer visualization of superficial structures.
  • Improved fluid detection, especially in the subacromial bursa, was observed.

Conclusions:

  • Double-echo T2-weighted multiplanar gradient recalled sequences offer an advantage in shoulder MRI.
  • This technique enhances diagnostic accuracy by reducing artifacts and improving visualization of key anatomical structures and potential pathologies.