Prof. Nick J. Avis Profile

Prof. Nick J. Avis

at Cardiff Univ

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Proceedings Article | 13 March 2009 Paper

High-quality remote interactive imaging in the operating theatre

Ian Grimstead, Nick Avis, Peter Evans, Alan Bocca

Proceedings Volume 7263, 72630C (2009) https://doi.org/10.1117/12.811094

KEYWORDS: Calibration, Surgery, Spectroscopy, LCDs, Image quality, Light sources and illumination, Visualization, Image quality standards, Picture Archiving and Communication System, Radiology

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We present a high-quality display system that enables the remote access within an operating theatre of high-end medical imaging and surgical planning software. Currently, surgeons often use printouts from such software for reference during surgery; our system enables surgeons to access and review patient data in a sterile environment, viewing real-time renderings of MRI & CT data as required. Once calibrated, our system displays shades of grey in Operating Room lighting conditions (removing any gamma correction artefacts). Our system does not require any expensive display hardware, is unobtrusive to the remote workstation and works with any application without requiring additional software licenses. To extend the native 256 levels of grey supported by a standard LCD monitor, we have used the concept of "PseudoGrey" where slightly off-white shades of grey are used to extend the intensity range from 256 to 1,785 shades of grey. Remote access is facilitated by a customized version of UltraVNC, which corrects remote shades of grey for display in the Operating Room. The system is successfully deployed at Morriston Hospital, Swansea, UK, and is in daily use during Maxillofacial surgery. More formal user trials and quantitative assessments are being planned for the future.

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