Kim, Sunhee Lee, Deukhee Park, Sehyung Oh, Kyung-Soo Chung, Seok Won Kim, Youngjun 2024-01-20T02:03:03Z 2024-01-20T02:03:03Z 2021-09-01 2017-03 0169-2607 https://pubs.kist.re.kr/handle/201004/123034 Background and objectives: With significant increase in the number of people suffering from shoulder problems, the automatic image segmentation of the supraspinatus (one of the shoulder muscles) has become necessary for efficient and deliberate diagnosis and surgery. In this study, we developed an automatic segmentation method to extract the three-dimensional (3D) configuration of the supraspinatus, and we compared our segmentation results with reference segmentations obtained by experts. Methods: We developed a two-stage active contour segmentation method using the level sets approach to automatically extract the supraspinatus configuration. In the first stage, a trial segmentation based on intensity and an internal shape fitting technique were performed. In the second stage, the undesired image portions of the trial segmentation were automatically identified by comparing the trial segmentation with the fitted shape, and then corrected by forcing the contour to stop evolution in the over-segmented region and pass through undesired edges in the under-segmented region. Results: The proposed method was found to provide highly accurate results when compared with the reference segmentations. This comparison was made on the basis of four measurements: accuracy (0.995 +/- 0.001), Dice similarity coefficients (0.951 +/- 0.011), average distance (0.440 +/- 0.086 mm), and maximal distance (3.045 +/- 0.433 mm). The proposed method could generate regular surfaces of the 3D supraspinatus. Conclusions: The proposed automatic segmentation method provides a patient-specific tool to accurately extract the 3D configuration of the supraspinatus. (C) 2016 Elsevier Ireland Ltd. All rights reserved. English ELSEVIER IRELAND LTD Automatic segmentation of supraspinatus from MRI by internal shape fitting and autocorrection Article 10.1016/j.cmpb.2016.12.008 1 COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE, v.140, pp.165 - 174 COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 140 165 174 N scie scopus 000397074300017 2-s2.0-85007193600 Computer Science, Interdisciplinary Applications Computer Science, Theory & Methods Engineering, Biomedical Medical Informatics Computer Science Engineering Medical Informatics Article MUSCLE FATTY DEGENERATION ACTIVE CONTOURS ROTATOR CUFF MINIMIZATION REGION ATROPHY DRIVEN ENERGY MODEL EActive contour segmentation Level-sets approach Shape fitting Supraspinatus