Evaluation of the SLAP Lesion Using a Low-field (0.2T) Magnetic Resonance System.
10.3348/jkrs.2007.56.6.569
- Author:
Yong Soo CHO
1
;
Chang Hee BACK
;
Kyung Rae LEE
;
Yun hack SHIN
Author Information
1. Department of Radiology, Yeosu Baek Hospital, Korea. wave1ys@hanmail.net
- Publication Type:Original Article
- Keywords:
Shoulder, MR;
Magnetic resonance (MR), low-field-strength imaging;
Arthroscopy
- MeSH:
Arthroscopy;
Humans;
Magnetic Resonance Imaging;
Prospective Studies;
Sensitivity and Specificity;
Shoulder
- From:Journal of the Korean Radiological Society
2007;56(6):569-573
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the diagnostic capabilities of the low-field (0.2T) magnetic resonance (MR) system in the detection of the superior labrum anterior to posterior (SLAP) lesion. MATERIALS AND METHODS: One hundred fifty patients underwent magnetic resonance imaging of the shoulder over a 7-month period. Forty-six patients underwent arthroscopic surgery, and the surgical results were correlated with the findings of the MR imaging. Arthroscopic procedures were performed within a mean of 8 days after MR imaging. MR imaging of the shoulder was conducted as follows: shoulder coil; T1-weighted spin echo, coronal-oblique images; T2-weighted gradient echo, coronal-oblique and axial images; and T2-weighted spin echo, coronal-oblique and sagittal-oblique images. Prospectively, one radiologist interpreted the MR images. RESULTS: The results of surgery were as follows: SLAP II in 26 shoulders, SLAP III in 1 shoulder, SLAP IV in 1 shoulder, normal labrum in 6 shoulders. For SLAP lesions with a higher grade than type 2, the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the low-field MRI were 85.7%, 55.5%, 75%, 71%, and 74%, respectively. CONCLUSION: There was relatively good agreement for the comparison of the MR results obtained using a low-field MR system with the surgical findings for identifying SLAP lesions.
