DL-based 3D MR arthrography showed 94.7-95.1% sensitivity and 100% specificity for glenoid labral lesions, reducing scan time by 75% compared to standard sequences.
Does deep learning-based isotropic 3D MR imaging provide comparable diagnostic accuracy to conventional sequences for detecting glenoid labral lesions in patients undergoing shoulder MR arthrography?
Deep learning-based 3D MR arthrography sequences provide high diagnostic accuracy for glenoid labral pathology while reducing scan time by 75% compared to conventional sequences.
Absolute Event Rate: 0% vs 0%
Background/Objectives: Magnetic resonance arthrography is the reference standard for evaluating glenoid labral lesions. Deep learning (DL) reconstruction algorithms may accelerate 3D acquisitions while maintaining image quality. This study assesses the diagnostic accuracy of DL-based isotropic 3D MR imaging for detecting glenoid labral lesions. Methods: This prospective study included 128 consecutive patients (79 men, 49 women; mean age 38.4 years) undergoing shoulder MR arthrography between June 2023 and April 2025. DL-based 3D sequences (acquisition time: 3:26) were compared with conventional multiplanar TSE and PD-FS sequences (acquisition time: 24–28 min). Two independent radiologists assessed glenoid labral lesions, bone marrow edema, and rotator cuff abnormalities using a four-point Likert scale. Sensitivity, specificity, and interobserver agreement were calculated. Results: DL-based 3D sequences demonstrated 94.7–95.1% sensitivity and 100% specificity for glenoid labral lesions, with excellent interobserver agreement (κ = 0.812). The area under the ROC curve was 0.894. Combined 3D protocols (T1 + PD-FS) showed superior accuracy (97.8%) compared to single sequences (90.5%, p = 0.012). For bone marrow edema, sensitivity was 82.9% with 100% specificity. Rotator cuff evaluation achieved 75% sensitivity with 100% specificity. Conclusions: DL-based isotropic 3D sequences provide high diagnostic accuracy for glenoid labral pathology while reducing scan time by 75%. Combined T1 and PD-FS protocols optimize performance. These findings support selective implementation of DL-accelerated 3D protocols in shoulder MR arthrography, particularly for labral assessment, while acknowledging that conventional protocols may remain preferable in specific clinical scenarios.
Tripodi et al. (Fri,) reported a other. DL-based 3D MR arthrography showed 94.7-95.1% sensitivity and 100% specificity for glenoid labral lesions, reducing scan time by 75% compared to standard sequences.