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Development and Initial Clinical Testing of OPECT: An Innovative Device for Fully Intangible Control of the Intraoperative Image-Displaying Monitor by the Surgeon

Yoshimitsu, Kitaro PhD*; Muragaki, Yoshihiro MD, PhD*,§; Maruyama, Takashi MD, PhD*,§; Yamato, Masayuki PhD*,‡; Iseki, Hiroshi MD, PhD*,§

doi: 10.1227/NEU.0000000000000214
Instrumentation and Technique

BACKGROUND: During surgery, various images as well as other relevant visual information are usually shown upon request with the help of operating staff. However, the lack of direct control over the display may represent a source of stress for surgeons, particularly when fast decision making is needed.

OBJECTIVE: To present the development and initial clinical testing of an innovative device that enables surgeons to have direct intangible control of the intraoperative image-displaying monitor with standardized free-hand movements.

METHODS: The originally developed intangible interface named “OPECT” is based on the commercially available gaming controller KINECT (Microsoft) and dedicated action-recognizing algorithm. The device does not require any sensors or markers fixed on the hands. Testing was done during 30 neurosurgical operations. After each procedure, surgeons completed the 5-item questionnaire for evaluation of the system performance, scaling several parameters from 1 (bad) to 5 (excellent).

RESULTS: During surgical procedures, OPECT demonstrated high effectiveness and simplicity of use, excellent quality of visualized graphics, and precise recognition of the individual user profile. In all cases, the surgeons were well satisfied with performance of the device. The mean score value of answers to the questionnaire was 4.7 ± 0.2.

CONCLUSION: OPECT enables the surgeon to easily have intangible control of the intraoperative image monitor by using standardized free-hand movements. The system has promising potential to be applied for various kinds of distant manipulations with the displaying visual information during human activities.

*Faculty of Advanced Techno-Surgery,

Institute of Advanced Biomedical Engineering and Science, Graduate School of Medicine, Tokyo Women's Medical University, Tokyo, Japan;

§Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan

Correspondence: Professor Yoshihiro Muragaki, MD, PhD, Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan. E-mail:

This work was presented in part during the 69th Annual Meeting of the Japan Neurosurgical Society (October 27 to October 29, 2010, Fukuoka, Japan) and the 50th Annual Conference of the Japanese Society for Medical and Biological Engineering (April 29 to May 1, 2011, Tokyo, Japan)

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Received April 13, 2013

Accepted October 07, 2013

Copyright © by the Congress of Neurological Surgeons