Papers › A fully automatic AI system for tooth and alveolar bone segmentation from cone-beam CT images
A fully automatic AI system for tooth and alveolar bone segmentation from cone-beam CT images
Zhiming Cui 1, 2, 3, Yu Fang 1, Lanzhuju Mei 1, Bojun Zhang4, 10, BoYu5, Jiameng Liu1, Caiwen Jiang1, Yuhang Sun1, Lei Ma1, Jiawei Huang1, Yang Liu6, Yue Zhao7✉, Chunfeng Lian8✉, Zhongxiang Ding9✉, Min Zhu4✉ & Dinggang Shen1, 3✉ Accurate
Accurate delineation of individual teeth and alveolar bones from dental cone-beam CT (CBCT) images is an essential step in digital dentistry for precision dental healthcare. In this paper, we present an AI system for efficient, precise, and fully automatic segmentation of real-patient CBCT images. Our AI system is evaluated on the largest dataset so far, i.e., using a dataset of 4,215 patients (with 4,938 CBCT scans) from 15 different centers. This fully automatic AI system achieves a segmentation accuracy comparable to experienced radi- ologists (e.g., 0.5% improvement in terms of average Dice similarity coefficient), while sig- nificant improvement in efficiency (i.e., 500 times faster). In addition, it consistently obtains accurate results on the challenging cases with variable dental abnormalities, with the average Dice scores of 91.5% and 93.0% for tooth and alveolar bone segmentation. These results demonstrate its potential as a powerful system to boost clinical workflows of digital dentistry.
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