Validating three-dimensional imaging for volumetric assessment of periorbital soft tissue. (2nd January 2021)

• Record Type: Journal Article
• Authors: Hyer, Jonathan N.; Murta, Fabiola; Juniat, Valerie A. R.; Ezra, Daniel G.
• Is Part Of: Orbit. Volume 40:Number 1(2021)
• Page Start: 9
• Page End: 17
• Publication Date: 2021-01-02
• Subjects: 3D imaging -- 3D stereo photogrammetry -- Orbital soft tissue -- Vectra -- Volume; Eye-sockets -- Surgery -- Periodicals; Eye-sockets -- Diseases -- Periodicals; Orbit -- surgery -- Periodicals; Orbital Diseases -- Periodicals; 617.7
• DOI: 10.1080/01676830.2020.1711780
• Languages: English
• ISSNs: 0167-6830

Abstract

ABSTRACT: Purpose : To evaluate the accuracy and interobserver variability of three-dimensional (3D) stereophotogrammetric imaging for volumetric assessment in the periorbital region and to propose a protocol for measurement. Methods : A cross-sectional study was performed. Fifty-eight normal adult subjects had photographs taken using the VECTRA M3 imaging system on two separate occasions at a single center teaching hospital. The primary study outcome measurement was mean volume change in the periorbital region, using different methods of image analysis with the following variables: registration method, eyes open or closed, eyelids measured separately or together, extension of area measured to include mid-face. Accuracy was defined as the agreement between paired images with no measured change in volume (0 mL). The agreement between two independent observers was assessed using Bland–Altman plots. Results : There was a statistically significant difference ( P < .0001) between the different methods of measurement, with registration of images having the most effect (partial eta squared 0.229). A mean change in volume of 0.11 ± 0.13 mL was reported for the most accurate method. Agreement between observers was confirmed (highest Intraclass Correlation Coefficient 0.63). Conclusions : Assessment of volumetric change in the periorbital region using 3D image reconstruction is accurate with good interobserver repeatability and is suitable for clinical use. A protocol for data acquisition using the VECTRA M3 is proposed. 3D image reconstruction holds promise to enable diagnosis, treatment monitoring, and surgical outcome evaluation in ocular adnexal disease.