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WCE 2017: Evaluation of a 3D Virtual Reality Model for Surgical Planning and Education

Vancouver, Canada (UroToday.com) Dr. Roshan Patel, clinical urology fellow from the University of California, Irvine, presented data on the use of 3D virtual reality models, viewed on a head mounted display, for surgical planning and education. Recent advances in virtual reality (VR) technology has greatly expanded the availability of VR devices in the consumer market. This VR technology may be used as a tool in surgical planning and education. Preoperative imaging is necessary for surgical planning and advancement in this technology have allowed for improved understanding of patient anatomy. 

For this study, 64 slice serial axial CT scan for 5 small renal mass patients were obtained. These CT scans were segmented via semi-automated voxel thresholding techniques using 3D slicer software and were then converted into 3D models and uploaded to a Virtual Reality Software (Bosc, Pear Medical, Seattle, WA). The virtual reality software allows users to view a 3D kidney model created using CT scan data on a head mounted display (Oculus Rift). Users can also interact with the model using a controller and/or hand gestures. The VR kidney models can be moved around, rotated, and zoomed in/out. Additionally structures such as the renal vasculature and collecting systems can be separated from the kidney and viewed individually. 

For this study, three 4th year medical students reviewed the CT scans and corresponding VR model in randomized order. After viewing both imaging technologies, they were asked to compare the CT scan and VR model by completing a questionnaire that assessed their understanding of the small renal mass and it relationship to other structures viewed. They were also asked to record the location of the SRM. Concordance between the location of the SRM noted on the radiology report and the reviewer’s response was assessed. 

Data analysis showed that assessment scores for the VR model were all significantly higher than CT imaging score. Dr. Patel concluded that VR technology can be used to create 3D kidney model from CT imaging data and that this technology may improve user understanding of small renal masses and its relationship to underlying renal structures.

Presented by: Roshan Patel, Shoaib Safiullah

Authors: Roshan Patel, Shoaib Safiullah, Daniel Lama, Ryan James, Ahmad Aljadaan, Mark Laughery, Ralph Clayman, Jaime Landman
Affiliation: Department of Urology, University of California, Irvine

Written by: Renai Yoon, Department of Urology, University of California-Irvine at 35th World Congress of Endourology– September 12-16, 2017, Vancouver, Canada.