2021 年 12 巻 1 号 p. 1-7
ABSTRACT Introduction: In recent years, small and lightweight three-dimensional (3D) scanners have been used to measure circumference, surface area, and volume of the body or objects; however, their measurement reliability remains unclear. Therefore, this study aimed to clarify the reliability of measuring the circumference, surface area, and volume of a body part or an object using the handheld 3D scanner. Methods: Regarding the intra-rater reliability, one examiner measured and calculated the circumference, surface area, and volume of the upper arm of three participants. Regarding the inter-rater reliability, three objects were scanned by three different examiners, and the circumference, surface area, and volume were calculated. Intra-class correlation coefficients (ICC) were used to evaluate the reliability of 3D scanner (Artec Eva scanner) in this study. Study 1 investigated the intra-rater reliability ICC (1, 1), whereas Study 2 investigated the inter-rater reliability ICC (2, 1). Results: The intra-rater reliability, surface area 0.98, and volume ICCs are ICC 0.98, 0.98, and 0.99, respectively, whereas the inter-rater reliability, surface area, and volume ICCs are all 1.00, showing high reliability. Conclusion: This study suggests that the 3D scanner is a clinically efficient device for measuring the circumference, surface area, and volume of a body part or an object.
