Kim, Hannah Son, Tae-geun Lee, Jeonghwan Kim, Hyeun A. Cho, Hyunchul Jeong, Woo Shik Choi, Jong Woo Kim, Youngjun 2024-01-19T20:01:48Z 2024-01-19T20:01:48Z 2021-09-02 2019-06 1010-5182 https://pubs.kist.re.kr/handle/201004/119944 Purpose: Three-dimensional orbital wall modeling is a time-consuming process because of the presence of pseudoforamina. We developed an automated three-dimensional modeling software to characterize the orbital wall, and evaluated it using data from fracture patients. Methods: We first characterized the air and face regions using multiphase segmentation; the sinuses were segmented by applying morphological operations to air regions. Pseudoforamina of the orbital wall were offset with the segmented sinuses. Finally, the three-dimensional facial bone model, with orbital wall, was reconstructed from the segmented images. Results: Ten computed tomography data sets were used to evaluate the proposed method. Results were compared with those obtained using the active contour model and manual segmentation. The process took 31.7 +/- 8.0 s, which was 30-60 times faster than other methods. The average distances between surfaces obtained with the proposed method and those obtained with manual segmentation (normal side: 0.20 +/- 0.06 mm; fractured side: 0.28 +/- 0.10 mm) were approximately half those obtained using the active contour model. tConclusions: Three-dimensional orbital wall models, which were very similar to the manually segmented models, were archived within 1 min using the developed software, regardless of fracture presence. The proposed method might improve the safety and accuracy of surgical procedures. (C) 2019 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved. English CHURCHILL LIVINGSTONE AUTOMATIC SEGMENTATION RECONSTRUCTION NAVIGATION SURGERY CAVITY VOLUME SHAPE CT Three-dimensional orbital wall modeling using paranasal sinus segmentation Article 10.1016/j.jcms.2019.03.028 1 JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY, v.47, no.6, pp.959 - 967 JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY 47 6 959 967 scie scopus 000470076500017 2-s2.0-85064657559 Dentistry, Oral Surgery & Medicine Surgery Dentistry, Oral Surgery & Medicine Surgery Article AUTOMATIC SEGMENTATION RECONSTRUCTION NAVIGATION SURGERY CAVITY VOLUME SHAPE CT Orbital reconstruction surgery Orbital fracture Maxillofacial segmentation Three-dimensional orbital wall modeling