https://scholars.lib.ntu.edu.tw/handle/123456789/607023
標題: | Automatic lumen detection and magnetic alignment control for magnetic-assisted capsule colonoscope system optimization | 作者: | Yen S.-Y Huang H.-E Lien G.-S Liu C.-W Chu C.-F Huang W.-M Suk F.-M. CHIH-WEN LIU |
關鍵字: | automation;cecum;colonoscope;colonoscopy;computer assisted diagnosis;devices;diagnostic imaging;equipment design;human;magnetism;pathology;procedures;sensitivity and specificity;Automation;Cecum;Colonoscopes;Colonoscopy;Diagnosis, Computer-Assisted;Equipment Design;Humans;Magnetic Phenomena;Sensitivity and Specificity | 公開日期: | 2021 | 卷: | 11 | 期: | 1 | 來源出版物: | Scientific Reports | 摘要: | We developed a magnetic-assisted capsule colonoscope system with integration of computer vision-based object detection and an alignment control scheme. Two convolutional neural network models A and B for lumen identification were trained on an endoscopic dataset of 9080 images. In the lumen alignment experiment, models C and D used a simulated dataset of 8414 images. The models were evaluated using validation indexes for recall (R), precision (P), mean average precision (mAP), and F1 score. Predictive performance was evaluated with the area under the P-R curve. Adjustments of pitch and yaw angles and alignment control time were analyzed in the alignment experiment. Model D had the best predictive performance. Its R, P, mAP, and F1 score were 0.964, 0.961, 0.961, and 0.963, respectively, when the area of overlap/area of union was at 0.3. In the lumen alignment experiment, the mean degrees of adjustment for yaw and pitch in 160 trials were 21.70° and 13.78°, respectively. Mean alignment control time was 0.902?s. Finally, we compared the cecal intubation time between semi-automated and manual navigation in 20 trials. The average cecal intubation time of manual navigation and semi-automated navigation were 9?min 28.41?s and 7?min 23.61?s, respectively. The automatic lumen detection model, which was trained using a deep learning algorithm, demonstrated high performance in each validation index. ? 2021, The Author(s). |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102790363&doi=10.1038%2fs41598-021-86101-9&partnerID=40&md5=0c045b5dba5c3b0a8a5075207bb2cd84 https://scholars.lib.ntu.edu.tw/handle/123456789/607023 |
ISSN: | 20452322 | DOI: | 10.1038/s41598-021-86101-9 |
顯示於: | 電機工程學系 |
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