Segmentation of orbital and periorbital lesions detected in orbital magnetic resonance imaging by deep learning method


AYDIN N., ŞAYLISOY S., Celik O., ASLAN A. F., ODABAŞ A.

Polish Journal of Radiology, vol.87, no.1, 2022 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 87 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.5114/pjr.2022.119808
  • Journal Name: Polish Journal of Radiology
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, EMBASE
  • Keywords: deep learning, orbital lesions, orbital MRI, periorbital lesions, segmentation
  • Eskisehir Osmangazi University Affiliated: Yes

Abstract

© Pol J Radiol 2022;.Purpose: Magnetic resonance imaging (MRI) has a special place in the evaluation of orbital and periorbital lesions. Segmentation is one of the deep learning methods. In this study, we aimed to perform segmentation in orbital and periorbital lesions. Material and methods: Contrast-enhanced orbital MRIs performed between 2010 and 2019 were retrospectively screened, and 302 cross-sections of contrast-enhanced, fat-suppressed, T1-weighted, axial MRI images of 95 patients obtained using 3 T and 1.5 T devices were included in the study. The dataset was divided into 3: training, test, and validation. The number of training and validation data was increased 4 times by applying data augmentation (horizontal, vertical, and both). Pytorch UNet was used for training, with 100 epochs. The intersection over union (IOU) statistic (the Jaccard index) was selected as 50%, and the results were calculated. Results: The 77th epoch model provided the best results: true positives, 23; false positives, 4; and false negatives, 8. The pre-cision, sensitivity, and F1 score were determined as 0.85, 0.74, and 0.79, respectively. Conclusions: Our study proved to be successful in segmentation by deep learning method. It is one of the pioneering studies on this subject and will shed light on further segmentation studies to be performed in orbital MR images.