Comparing reliability between 3D imaging and 2D photography for external nasal anthropometry

Abstract

This study investigates and compares the reliability and reproducibility of two facial anthropometric methods about external nasal angles, 3D imaging and conventional 2D photography. 2D photograph images and 3D images about external nose of 30 volunteers were taken using digital camera and Morpheus 3D scanner. To evaluate intra-rater reliability, each images were taken over two different days for each subject by the same researcher. To evaluate inter-rater reliability, another researcher took each images for each subject on the first day. The reliability of each method for measuring 4 external nasal angle is obtained using intraclass correlation coefficient (ICC) and compared. Inter-rater and intra-rater reliability of both 3D imaging and 2D photography had excellent agreement in all 4 nasal angles. In the nasofacial angular parameter, Inter-rater ICC, 2D photography was significantly higher than 3D imaging. Result of intra-rater ICC also showed both 3D imaging and 2D photography had good reliability in all 4 nasal angles. Similar to those of inter-rater ICC, nasofacial angular parameter showed statistically significant differences between 3D imaging and 2D photography. In terms of reliability, both 2D and 3D showed appropriate anthropometric results and considering its own advantage, each methods can be used complementarily.

Changes in Nasal Tip Aesthetics Over Time Following Asian Tip Plasty

“…No less than analysis through conventional two‐dimensional photographs, 3D scanner enables precise and accurate anthropometric measurements 17,18 . In recent study using a 3D scanner identical to that used in our study, it was reported that anthropometric measurements using 3D scanner are as accurate as those using conventional 2D photograph images 19 . In addition, the maintenance of surgical results can be easily quantified through the automatic calculation of the aesthetic features after surgery via a 3D scanner.…”

“…17,18 In recent study using a 3D scanner identical to that used in our study, it was reported that anthropometric measurements using 3D scanner are as accurate as those using conventional 2D photograph images. 19 In addition, the maintenance of surgical results can be easily quantified through the automatic calculation of the aesthetic features after surgery via a 3D scanner. Recently, studies using 3D scanners have been conducted in the field of rhinoplasty.…”

Comparison of three-dimensional imaging of the nose using three different 3D- photography systems: an observational study

“…The accuracy and reliability of 3D-photography systems vary, and the cost and lack of portability of these systems can limit their widespread adoption (8). Additionally, the interpretation and use of 3D data requires specialized training and expertise (9). This study aims to compare and determine the applicability and feasibility of three different 3Dphotography systems in clinical practice for imaging the complex geometry of the nose with regard to accuracy, precision, feasibility, and cost-effectiveness.…”

Customized Augmentation Rhinoplasty With Morpheus 3-Dimensional Scanner

“…T hree-dimensional (3D) scanning-based morphologic analyses of facial structures are becoming more popular in several clinical settings. [1][2][3][4][5][6][7] However, the application has not yet been widely reported in augmentation rhinoplasty. When performing augmentation rhinoplasty, determining the degree of augmentation at each anatomic location from the nasion to the nasal tip is the most challenging part.…”

“…Three-dimensional (3D) scanning-based morphologic analyses of facial structures are becoming more popular in several clinical settings 1–7 . However, the application has not yet been widely reported in augmentation rhinoplasty.…”