基于ICP算法的单侧颧骨骨折自动虚拟复位的初步研究。

IF 2.2 3区 医学 Q2 Dentistry Journal of Stomatology Oral and Maxillofacial Surgery Pub Date : 2025-01-04 DOI:10.1016/j.jormas.2025.102220
Runqi Liu, Bimeng Jie, Yanhang Tong, Junchen Wang, Yang He
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引用次数: 0

摘要

目的:建立一种基于迭代闭合点(ICP)算法的单侧颧骨骨折自动复位方法。材料与方法:选取60例单侧B型颧骨骨折患者。获取CT图像后,使用自行开发的软件MICSys对颧骨碎片进行分割。中矢状面(MSP)采用颅骨解剖标志手工定义。然后根据MSP“镜像”健康侧颧骨表面。参照镜像,采用自动和人工两种方法对碎片进行了缩减。在自动组中,MICSys采用ICP算法将片段配准到镜像上。手工组由经验丰富的颌面外科医生翻译和旋转碎片,直到与镜像一致。记录各组手术时间。计算简化后的片段与镜像之间的RMSE以评估准确性。采用t检验比较两组手术时间和准确率。结果:60例患者均采用两种方法进行虚拟骨复位。自动组和手动组的操作时间分别为3.06±1.93 s和65.45±32.19 s,差异有统计学意义(P < 0.0001)。自动组和手动组的RMSE分别为1.94±0.59 mm和2.33±0.57 mm,差异有统计学意义(P < 0.0001)。结论:基于ICP算法的单侧颧骨骨折自动复位方法初步建立,临床可接受。
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Automatic virtual reduction of unilateral zygomatic fractures based on ICP algorithm: A preliminary study.

Objective: To establish an automatic reduction method for unilateral zygomatic fractures based on Iterative Closes Point (ICP) algorithm.

Material and methods: 60 patients with unilateral type B zygomatic fractures were included. After acquiring CT images, zygomatic fragments were segmented using self-developed software MICSys. Mid-Sagittal-Plane (MSP) was manually defined using anatomical skull landmarks. Surface of zygoma on the healthy side was then "mirrored" according to MSP. Referring to mirror image, the fragments were reduced by both automatic and manual methods. In automatic group, fragments were registered onto mirror images by ICP algorithm in MICSys. In manual group, an experienced maxillofacial surgeon translated and rotated fragments until coincided with mirror images. Operating time of each group was recorded. RMSE between reduced fragment and mirror image was calculated to evaluate accuracy. Operating time and accuracy between the two groups were compared using T-test.

Results: Virtual bone reduction was conducted for all 60 patients by the two methods. Operating time of automatic group and manual group were 3.06 ± 1.93 s and 65.45 ± 32.19 s, with significant difference (P < 0.0001). RMSE of automatic group and manual group were 1.94 ± 0.59 mm and 2.33 ± 0.57 mm, with significant difference (P < 0.0001).

Conclusion: Automatic reduction method based on ICP Algorithm for unilateral zygomatic fractures was initially established and clinically acceptable.

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来源期刊
CiteScore
2.20
自引率
9.10%
发文量
305
期刊介绍: J Stomatol Oral Maxillofac Surg publishes research papers and techniques - (guest) editorials, original articles, reviews, technical notes, case reports, images, letters to the editor, guidelines - dedicated to enhancing surgical expertise in all fields relevant to oral and maxillofacial surgery: from plastic and reconstructive surgery of the face, oral surgery and medicine, … to dentofacial and maxillofacial orthopedics. Original articles include clinical or laboratory investigations and clinical or equipment reports. Reviews include narrative reviews, systematic reviews and meta-analyses. All manuscripts submitted to the journal are subjected to peer review by international experts, and must: Be written in excellent English, clear and easy to understand, precise and concise; Bring new, interesting, valid information - and improve clinical care or guide future research; Be solely the work of the author(s) stated; Not have been previously published elsewhere and not be under consideration by another journal; Be in accordance with the journal''s Guide for Authors'' instructions: manuscripts that fail to comply with these rules may be returned to the authors without being reviewed. Under no circumstances does the journal guarantee publication before the editorial board makes its final decision. The journal is indexed in the main international databases and is accessible worldwide through the ScienceDirect and ClinicalKey Platforms.
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