Clinical Accuracy of an Optical Neuronavigation System in the Cranial Base: A Cadaveric Study

2012 ◽  
Vol 73 (S 02) ◽  
Author(s):  
T. Van Havenbergh ◽  
T. Somers
Keyword(s):  
Cranial Base ◽  
Cadaveric Study ◽  
Neuronavigation System ◽  
Clinical Accuracy

scholarly journals Clinical Accuracy of Holographic Navigation Using Point-Based Registration on Augmented-Reality Glasses

2019 ◽  
Vol 17 (6) ◽  
pp. 588-593 ◽  
Author(s):  
Tristan P C van Doormaal ◽  
Jesse A M van Doormaal ◽  
Tom Mensink
Keyword(s):  
Augmented Reality ◽  
Low Cost ◽  
Physical Space ◽  
Mean Difference ◽  
Head Model ◽  
3 Dimensional ◽  
Smart Glasses ◽  
Neuronavigation System ◽  
Clinical Accuracy ◽  
The Mean

Abstract BACKGROUND As current augmented-reality (AR) smart glasses are self-contained, powerful computers that project 3-dimensional holograms that can maintain their position in physical space, they could theoretically be used as a low-cost, stand-alone neuronavigation system. OBJECTIVE To determine feasibility and accuracy of holographic neuronavigation (HN) using AR smart glasses. METHODS We programmed a fully functioning neuronavigation system on commercially available smart glasses (HoloLens®, Microsoft, Redmond, Washington) and tested its accuracy and feasibility in the operating room. The fiducial registration error (FRE) was measured for both HN and conventional neuronavigation (CN) (Brainlab, Munich, Germany) by using point-based registration on a plastic head model. Subsequently, we measured HN and CN FRE on 3 patients. RESULTS A stereoscopic view of the holograms was successfully achieved in all experiments. In plastic head measurements, the mean HN FRE was 7.2 ± 1.8 mm compared to the mean CN FRE of 1.9 ± 0.45 (mean difference: –5.3 mm; 95% confidence interval [CI]: –6.7 to –3.9). In the 3 patients, the mean HN FRE was 4.4 ± 2.5 mm compared to the mean CN FRE of 3.6 ± 0.5 (mean difference: –0.8 mm; 95% CI: –3.0 to 4.6). CONCLUSION Owing to the potential benefits and promising results, we believe that HN could eventually find application in operating rooms. However, several improvements will have to be made before the device can be used in clinical practice.

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