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Automatic 3D landmarking model using patch‐based deep neural networks for CT image of oral and maxillofacial surgery
Author(s) -
Ma Qingchuan,
Kobayashi Etsuko,
Fan Bowen,
Nakagawa Keiichi,
Sakuma Ichiro,
Masamune Ken,
Suenaga Hideyuki
Publication year - 2020
Publication title -
the international journal of medical robotics and computer assisted surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 53
eISSN - 1478-596X
pISSN - 1478-5951
DOI - 10.1002/rcs.2093
Subject(s) - computer science , convolutional neural network , artificial intelligence , artificial neural network , workload , principal component analysis , pattern recognition (psychology) , computer vision , matlab , deep learning , flexibility (engineering) , operating system , statistics , mathematics
Abstract Background Manual landmarking is a time consuming and highly professional work. Although some algorithm‐based landmarking methods have been proposed, they lack flexibility and may be susceptible to data diversity. Methods The CT images from 66 patients who underwent oral and maxillofacial surgery (OMS) were landmarked manually in MIMICS. Then the CT slices were exported as images for recreating the 3D volume. The coordinate data of landmarks were further processed in Matlab using a principal component analysis (PCA) method. A patch‐based deep neural network model with a three‐layer convolutional neural network (CNN) was trained to obtain landmarks from CT images. Results The evaluating experiment showed that this CNN model could automatically finish landmarking in an average processing time of 37.871 seconds with an average accuracy of 5.785 mm. Conclusion This study shows a promising potential to relieve the workload of the surgeon and reduces the dependence on human experience for OMS landmarking.