Development of an Object LengthMeasurement System in a Virtual Reality Space for Medical Education

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  • KATAYAMA Reiji
    Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University Center for the Study of Medical Education, Kurume University School of Medicine
  • MORISHITA Junji
    Department of Health Sciences, Faculty of Medical Sciences, Kyushu University
  • YABUUCHI Hidetake
    Department of Health Sciences, Faculty of Medical Sciences, Kyushu University

Bibliographic Information

Other Title
  • 医学教育のための仮想現実空間に表現した物体長計測システムの開発
Published
2022-12-25
Resource Type
journal article
DOI
  • 10.15017/6788286
Publisher
Fukuoka Medical Association

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Description

Purpose : This study aimed to develop a prototype caliper measurement tool that exists in real space to measure the length of three-dimensional (3D) virtual reality (VR) anatomical models with acceptable accuracy and reproducibility, particularly for medical education and training. Methods : The measurement tool was constructed using a digital caliper with two object-tracking sensors to synchronize the positions of the virtual and real jaws. The accuracy and reproducibility for measuring virtual cubes (5, 10, 25, 50, and 100 mm) and three anatomical regions of VR models for vessel, skeleton, and organ were examined. Measurements for the virtual cubes and VR anatomical models were performed by one and two raters, respectively. The degree of agreement between measurements was evaluated using intraclass correlation coefficients (ICC). Results : The developed tool effectively connected real and VR spaces. The measurement errors of the virtual cubes were within 0.5 mm or less for all virtual cube sizes. No statistically significant differences were observed between the errors for any of the virtual cube sizes. Alternatively, measurement errors were within 0.3 mm or less for all regions of VR anatomical models. No statistically significant differences were observed between the errors for the VR anatomical models. High degrees of intra- and inter-rater measurement reliabilities in terms of the ICC were 0.99 in both. Conclusion : The developed prototype measurement tool was effective in a VR environment with measurement errors of less than 0.5 mm and reliable ICCs for the measurement of VR objects and VR anatomical structures, especially for medical education and training.

Journal

  • 福岡醫學雜誌

    福岡醫學雜誌 113 (4), 59-72, 2022-12-25

    Fukuoka Medical Association

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