News Column

Investigators from Boramae Medical Center Target Radiology (Visual MRI Grading System to Evaluate Atrophy of the Supraspinatus Muscle)

September 5, 2014

By a News Reporter-Staff News Editor at Health & Medicine Week -- Investigators discuss new findings in Medical Imaging. According to news reporting from Seoul, South Korea, by NewsRx journalists, research stated, "To investigate the interobserver reproducibility and diagnostic feasibility of a visual grading system for assessing atrophy of the supraspinatus muscle on magnetic resonance imaging (MRI). Three independent radiologists retrospectively evaluated the occupying ratio of the supraspinatus muscle in the supraspinatus fossa on 192 shoulder MRI examinations in 188 patients using a 3-point visual grading system (1, >= 60%; 2, 30-59%; 3, < 30%) on oblique sagittal T1-weighted images."

The news correspondents obtained a quote from the research from Boramae Medical Center, "The inter-reader agreement and the agreement with the reference standard (3-point grades according to absolute occupying ratio values quantitatively measured by directly contouring the muscles on MRI) were analyzed using weighted kappa. The visual grading was applied by a single reader to a group of 100 consecutive patients who had undergone rotator cuff repair to retrospectively determine the association between the visual grades at preoperative state and postsurgical occurrences of retear. The inter-reader weighted kappa value for the visual grading was 0.74 when averaged across three reader pairs (0.70-0.77 for individual reader pairs). The weighted kappa value between the visual grading and the reference standard ranged from 0.75 to 0.83. There was a significant difference in retear rates of the rotator cuff between the 3 visual grades of supraspinatus muscle atrophy on MRI in univariable analysis (p < 0.001), but not in multivariable analysis (p = 0.026)."

According to the news reporters, the research concluded: "The 3-point visual grading system may be a feasible method to assess the severity of supraspinatus muscle atrophy on MRI and assist in the clinical management of patients with rotator cuff tear."

For more information on this research see: Visual MRI Grading System to Evaluate Atrophy of the Supraspinatus Muscle. Korean Journal of Radiology, 2014;15(4):501-507. Korean Journal of Radiology can be contacted at: Korean Radiological Soc, 121-8 Yangjae-Dong, Seocho-Gu, Seoul 137-130, South Korea (see also Medical Imaging).

Our news journalists report that additional information may be obtained by contacting H.K. Lim, SMG SNU Boramae Med Center, Dept. of Radiol, Seoul 156707, South Korea. Additional authors for this research include S.H. Hong, H.J. Yoo, J.Y. Choi, S.H. Kim, J.A. Choi and H.S. Kang.

Keywords for this news article include: Asia, Seoul, South Korea, Medical Imaging

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Source: Health & Medicine Week

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