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Objective <p>This study aimed to compare the diagnostic performance of conventional fat-suppression T1-weighted imaging (T1WI) and fat-suppression three-dimensional T1-weighted imaging with sampling perfection with application-optimized contrasts using different flip angle evolution (3D-T1WI-SPACE) sequences in detecting glenoid labral injuries during direct shoulder magnetic resonance arthrography (MRA).</p> Methods <p>A retrospective analysis was conducted on imaging data from 60 individuals presenting with shoulder symptoms. Both imaging sequences were performed following intra-articular contrast injection. The intra-articular contrast-to-noise ratio (CNR) of both sequences was calculated to evaluate image quality. The images were analyzed to identify and classify glenoid labral injuries. Diagnositc sensitivity, specificity, and accuracy of the two sequences were calculated using arthroscopy as the reference standard. Agreement between MRA findings (from the two sequences) and arthroscopic results was assessed using the Kappa consistency test.</p> Results <p>The fat-suppression 3D-T1WI-SPACE sequence reduced scanning time by 52%. However, its intra-articular CNR was significantly lower than that of the conventional fat-suppression T1WI sequence (<i>p</i> &lt; 0.001). When using arthroscopy as the reference standard, the sensitivity, specificity, and accuracy for diagnosing glenoid labral injury were 97.5%, 95%, and 96.7%, respectively, surpassing those of the conventional fat-suppression T1WI sequence (90.0%, 90.0%, and 90.0%). Despite these differences, the diagnostic performance of both sequences was comparable. The Kappa values indicated high consistency between MRA findings and arthroscopy, with values of 0.925 for the 3D-T1WI-SPACE sequence and 0.78 for the conventional T1WI sequence.</p> Conclusion <p>While the fat-suppression 3D-T1WI-SPACE sequence demonstrated inferior image quality compared to the conventional fat-suppression T1WI sequence, its diagnostic accuracy was similar. Its substantially reduced scanning time supports its utility as a supplementary option for evaluating glenoid labral injuries during shoulder joint MRA.</p>

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Diagnostic performance of conventional fat-suppression T1WI versus fat-suppression 3D-T1WI-SPACE sequences in detecting glenoid labral injuries via direct shoulder MR arthrography

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月18日

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  • Binbin Teng,
  • Hang Wu,
  • He Lin

摘要

Objective

This study aimed to compare the diagnostic performance of conventional fat-suppression T1-weighted imaging (T1WI) and fat-suppression three-dimensional T1-weighted imaging with sampling perfection with application-optimized contrasts using different flip angle evolution (3D-T1WI-SPACE) sequences in detecting glenoid labral injuries during direct shoulder magnetic resonance arthrography (MRA).

Methods

A retrospective analysis was conducted on imaging data from 60 individuals presenting with shoulder symptoms. Both imaging sequences were performed following intra-articular contrast injection. The intra-articular contrast-to-noise ratio (CNR) of both sequences was calculated to evaluate image quality. The images were analyzed to identify and classify glenoid labral injuries. Diagnositc sensitivity, specificity, and accuracy of the two sequences were calculated using arthroscopy as the reference standard. Agreement between MRA findings (from the two sequences) and arthroscopic results was assessed using the Kappa consistency test.

Results

The fat-suppression 3D-T1WI-SPACE sequence reduced scanning time by 52%. However, its intra-articular CNR was significantly lower than that of the conventional fat-suppression T1WI sequence (p < 0.001). When using arthroscopy as the reference standard, the sensitivity, specificity, and accuracy for diagnosing glenoid labral injury were 97.5%, 95%, and 96.7%, respectively, surpassing those of the conventional fat-suppression T1WI sequence (90.0%, 90.0%, and 90.0%). Despite these differences, the diagnostic performance of both sequences was comparable. The Kappa values indicated high consistency between MRA findings and arthroscopy, with values of 0.925 for the 3D-T1WI-SPACE sequence and 0.78 for the conventional T1WI sequence.

Conclusion

While the fat-suppression 3D-T1WI-SPACE sequence demonstrated inferior image quality compared to the conventional fat-suppression T1WI sequence, its diagnostic accuracy was similar. Its substantially reduced scanning time supports its utility as a supplementary option for evaluating glenoid labral injuries during shoulder joint MRA.