Florian Heinrich1,2, Florentine Huettl3, Tobias Huber3, Christian Hansen4,5, Gerd Schmidt1,2, Markus Paschold3,6, Werner Kneist3,7. 1. Faculty of Computer Science, University of Magdeburg, Magdeburg, Germany. 2. Research Campus STIMULATE, Magdeburg, Germany. 3. Department of General, Visceral and Transplant Surgery, University Medicine of the Johannes Gutenberg University Mainz, Mainz, Germany. 4. Faculty of Computer Science, University of Magdeburg, Magdeburg, Germany. hansen@isg.cs.uni-magdeburg.de. 5. Research Campus STIMULATE, Magdeburg, Germany. hansen@isg.cs.uni-magdeburg.de. 6. Department of Surgery, Hospital St. Marienwörth, Bad Kreuznach, Germany. 7. Department of General and Visceral Surgery, St. George Clinic Eisenach, Eisenach, Germany.
Abstract
PURPOSE: In laparoscopic surgery training, experts guide novice physicians to desired instrument positions or indicate relevant areas of interest. These instructions are usually given via verbal communication or using physical pointing devices. To facilitate a sterile work flow and to improve training, new guiding methods are needed. This work proposes to use optical see-through augmented reality to visualize an interactive virtual pointer on the laparoscopic. METHODS: After an interdisciplinary development, the pointer's applicability and feasibility for training was evaluated and it was compared to a standard condition based on verbal and gestural communication only. In this study, ten surgical trainees were guided by an experienced trainer during cholecystectomies on a laparoscopic training simulator. All trainees completed a virtual cholecystectomy with and without the interactive virtual pointer in alternating order. Measures included procedure time, economy of movement and error rates. RESULTS: Results of standardized variables revealed significantly improved economy of movement (p = 0.047) and error rates (p = 0.047), as well as an overall improved user performance (Total z-score; p = 0.031) in conditions using the proposed method. CONCLUSION: The proposed HoloPointer is a feasible and applicable tool for laparoscopic surgery training. It improved objective performance metrics without prolongation of the task completion time in this pre-clinical setup.
PURPOSE: In laparoscopic surgery training, experts guide novice physicians to desired instrument positions or indicate relevant areas of interest. These instructions are usually given via verbal communication or using physical pointing devices. To facilitate a sterile work flow and to improve training, new guiding methods are needed. This work proposes to use optical see-through augmented reality to visualize an interactive virtual pointer on the laparoscopic. METHODS: After an interdisciplinary development, the pointer's applicability and feasibility for training was evaluated and it was compared to a standard condition based on verbal and gestural communication only. In this study, ten surgical trainees were guided by an experienced trainer during cholecystectomies on a laparoscopic training simulator. All trainees completed a virtual cholecystectomy with and without the interactive virtual pointer in alternating order. Measures included procedure time, economy of movement and error rates. RESULTS: Results of standardized variables revealed significantly improved economy of movement (p = 0.047) and error rates (p = 0.047), as well as an overall improved user performance (Total z-score; p = 0.031) in conditions using the proposed method. CONCLUSION: The proposed HoloPointer is a feasible and applicable tool for laparoscopic surgery training. It improved objective performance metrics without prolongation of the task completion time in this pre-clinical setup.
Entities:
Keywords:
Head pointing; Laparoscopic surgery training; Medical augmented reality; Virtual pointer
Authors: Yuanyuan Feng; Hannah McGowan; Azin Semsar; Hamid R Zahiri; Ivan M George; Timothy Turner; Adrian Park; Andrea Kleinsmith; Helena M Mentis Journal: Int J Comput Assist Radiol Surg Date: 2018-05-23 Impact factor: 2.924
Authors: Yuanyuan Feng; Hannah McGowan; Azin Semsar; Hamid R Zahiri; Ivan M George; Adrian Park; Andrea Kleinsmith; Helena Mentis Journal: Surg Endosc Date: 2019-10-04 Impact factor: 4.584