Construction of virtual-real interactive system HE-01 for the treatment of microtia and feasibility study of the application of HE-01 in ear reconstruction
10.3760/cma.j.cn114453-20230523-00113
- VernacularTitle:小耳畸形治疗虚实交互辅助系统HE-01的构建及辅助耳廓再造术的可行性研究
- Author:
Shuang WANG
1
;
Qinhao GU
;
Leren HE
;
Dongwen JIANG
;
Qiaoli SHANG
Author Information
1. 中国医学科学院北京协和医学院整形外科医院耳整形再造一科，北京 100144
- Keywords:
Congenital microtia;
Auricle;
Augmented reality;
Image guide;
HoloLens
- From:
Chinese Journal of Plastic Surgery
2024;40(2):131-142
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To construct a virtual-real interactive system HE-01 for the treatment of microtia based on HoloLens and verify the feasibility of applying HE-01 in ear reconstruction.Methods:Six volunteers (3 males and 3 females, average age: 20.5 years old) and six patients with microtia(3 males and 3 females, average age: 7.6 years old) were recruited from Plastic Surgery Hospital of Chinese Academy of Medical Sciences from August to September 2021. The Mimics Research 21.0 software and 3-matic research software were used to construct a virtual three-dimensional auricle model. Based on HoloLens and occlusal splint navigation marker device, the virtual-real interactive system HE-01 for the treatment of microtia was constructed. The registration accuracy, tracking delay and display effect of different colors (red, green, blue and skin color) of HE-01 were evaluated through repeated experiments of volunteers. The operation process was defined through repeated experiments of patients and the feasibility of applying HE-01 in auricular reconstruction was verified.Results:HE-01 was built successfully and the operation flow was clear. The experiment of six volunteers (12 ears) showed a high registration accuracy (average error rate 2.3%-2.4%, less than 2.7% of the bilateral auricle size difference of normal people), low tracking delay (six volunteers were all less than 0.1 s), and best green and red display effect of virtual auricle guide under different angles (-60°, -30°, 0°, 30°, 60°). Experiments of patients with microtia showed that HE-01 could be applied to auricular reconstruction, and there were no obvious complications in wearing the navigation marker device, which had repeatability and stability.Conclusion:This study has completed the conceptual design of augmented-reality assisted auricular reconstruction based on navigation device, CT data and HoloLens. HE-01 has good registration accuracy, tracking speed and display effect, laying a good foundation for further software development and clinical transformation.
