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Updated: Mar 22, 2026
Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
Published on: December 18, 2016
Quantitative diffusion-weighted magnetic resonance imaging for the diagnosis of partial-thickness rotator cuff tears
Huan-Chu Lo1, Sheng-Tsai Hung2, Duen-Pang Kuo3
1Department of Radiology, Tao-Yuan Armed Forces General Hospital, Tao-Yuan, Taiwan; Department of Diagnostic Radiology, National Defense Medical Center, Triservice General Hospital, Taipei, Taiwan.
Background:
This study investigated diffusion-weighted (DWI) magnetic resonance imaging (MRI) as an alternative to fat-suppressed T2-weighted imaging (FS-T2WI) for assessment of partial-thickness rotator cuff tears (RCTs).
Methods:
Patients with arthroscopy proven partial-thickness RCTs who also received MRI (FS-T2WI and DWI) before surgery were prospectively included. Receiver operating characteristic curves were used to compare DWI vs. FS-T2WI using lesion-to-muscle signal intensity ratios. A cutoff point for predicting partial-thickness tears was determined using the Youden index.
Results:
Included were 146 patients, with a mean age of 48.3 years (range, 19-86 years), of whom 43 had full-thickness RCTs, 67 had partial-thickness RCTs, and 36 had no tears. Areas under receiver operating characteristic curves for diagnosing partial-thickness tears were significantly higher for DWI (0.910) than for FS-T2WI (0.822, P = .016). Lesion-to-muscle signal intensity ratio cutoff values were 1.06 for DWI vs. 1.65 for FS-T2WI, respectively. The sensitivity and accuracy of DWI (89.1% [98 of 110] and 87.7% [128 of 146], respectively) for diagnosing partial-thickness and full-thickness tears were higher than for FS-T2WI (65.5% [72 of 110] and 72.6% [106 of 146], respectively). FS-T2WI, however, had higher specificity (94.4% [34 of 36]) than DWI (83.3% [30 of 36]).
Conclusions:
DWI is more accurate and sensitive than FS-T2WI for diagnosing partial-thickness RCTs.
Insights
Diffusion-weighted imaging (DWI) MRI is a more accurate and sensitive tool than fat-suppressed T2-weighted imaging (FS-T2WI) for diagnosing partial-thickness rotator cuff tears (RCTs). This finding offers a superior alternative for rotator cuff tear assessment.
Area of Science:
- Radiology
- Orthopedics
- Medical Imaging
Background:
- Partial-thickness rotator cuff tears (RCTs) pose diagnostic challenges.
- Fat-suppressed T2-weighted imaging (FS-T2WI) is a conventional MRI technique for RCT assessment.
- Investigating advanced MRI sequences as alternatives is crucial for improving diagnostic accuracy.
Purpose of the Study:
- To evaluate diffusion-weighted imaging (DWI) as a superior alternative to FS-T2WI for diagnosing partial-thickness rotator cuff tears.
- To compare the diagnostic performance metrics of DWI and FS-T2WI in identifying partial-thickness RCTs.
Main Methods:
- Prospective inclusion of 146 patients with arthroscopy-proven partial-thickness RCTs who underwent both FS-T2WI and DWI MRI prior to surgery.
- Utilized receiver operating characteristic (ROC) curve analysis to compare DWI and FS-T2WI based on lesion-to-muscle signal intensity ratios.
- Determined optimal cutoff values for partial-thickness tear prediction using the Youden index.
Main Results:
- DWI demonstrated significantly higher areas under the ROC curve (0.910) compared to FS-T2WI (0.822, P=.016) for diagnosing partial-thickness tears.
- DWI exhibited higher sensitivity (89.1%) and accuracy (87.7%) than FS-T2WI (65.5% and 72.6%, respectively) in detecting both partial-thickness and full-thickness tears.
- FS-T2WI showed higher specificity (94.4%) compared to DWI (83.3%).
Conclusions:
- Diffusion-weighted imaging (DWI) is a more accurate and sensitive MRI technique for diagnosing partial-thickness rotator cuff tears compared to FS-T2WI.
- DWI offers a promising alternative for improved assessment of rotator cuff injuries.
- Further research may explore the integration of DWI into routine clinical protocols for rotator cuff tear evaluation.
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