Accepted for/Published in: Journal of Medical Internet Research
Date Submitted: Oct 31, 2019
Date Accepted: Feb 10, 2020
Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.
Study of the precision of HoloLensTM-based vascular localization
ABSTRACT
Background:
Vascular localization is crucial for perforator flap transfer. Augmented reality offers a novel method to seamlessly combine real information with virtual objects created by computed tomographic angiography to help the surgeon “see-through” the skin and precisely localize the perforator. Microsoft HoloLensTM, a commercial AR head-mounted display, could make AR-based perforator localization more convenient and safe. For a localization system, precision is the most important performance indicator.
Objective:
To study the precision of HoloLens-based perforator localization.
Methods:
The precision of HoloLens-based perforator localization was studied in a simulated operating room under different conditions with a 3D-printed model. The coordinates of five pairs of points on the vascular map that could be easily identified on the 3D printed model and virtual model were detected by a probe, and the distance between the corresponding points was calculated as navigation error.
Results:
The mean errors were determined under different conditions and were all within a clinically acceptable range. There were no significant differences in the errors obtained under different visual angles, different light intensities or different states (static or motion). However, the error was larger when tested with light compared with tested without light.
Conclusions:
:The results of our study demonstrate that the system can precisely localize the perforator and potentially help the surgeon accomplish the operation. And we recommend using HoloLens-based surgical navigation without shadowless light
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