Abstract: Optimizing Measurements in Plastic Surgery through Holograms with Microsoft Hololens

Abstract

INTRODUCTION: Microsoft HoloLens (HoloLens)TM is a wearable computer headset that enables visualization and interaction with holograms. Using various laser sensors, HoloLens users can take measurements in their surrounding physical space using sterile hand gestures and voice commands. This tool can be applied to clinically and ideally suited to use in the operating room given the hands free nature of the device. In this study, we use typical breast and body measures to investigate the accuracy and reliability of measurements made with HoloLens. METHODS: Using third-party software (HoloMeasure) with Microsoft HoloLens, holographic lines were projected and measured between the sternal notch to nipple, and areolar horizontal and vertical diameter. The same distances were then measured using a standardized ruler. The mean error of these measurements and the user variability was then calculated. Users were then instructed to take a 9-question survey assessing comfort level, ease of use, and overall satisfaction. Survey responses were graded on a five-point Likert scale, and averages were calculated. RESULTS: Using Microsoft HoloLens, our group successfully made precise measurements of breast and body parameters routinely used in plastic surgery. The mean error of distance measurements was 4.3% with a SD of 0.71 among the users. The average ease of the voice-activated controls was 4.5 the average ease of using the hand gesture features was 4.7. Overall, subject rated the comfort of wearing the HoloLens highly. CONCLUSION: This study shows that the HoloLens can make accurate and reproducible measurements in plastic surgery. Furthermore, our survey demonstrated the accessibility and comfort of the technology for surgeons using the device. Additional studies are underway to further define applications of this technology in plastic surgery.