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Program Information

An Audio-Video Feedback Platform for Radiation Therapy

T Chiu

T Chiu*, H Liu , M Brenner , J Dwyer , M Yang , S Jiang , X Gu , The University of Texas Southwestern Medical Center, Dallas, TX


SU-H3-GePD-T-5 (Sunday, July 30, 2017) 4:00 PM - 4:30 PM Room: Therapy ePoster Lounge

Purpose: To develop an in-room audio-video feedback platform for better patient compliance to radiotherapy treatment and consequently to achieve better treatment quality.

Methods: The proposed platform consists of a server/client computer workstation located in the console area, an in-room client station and an in-house designed projector screen. The platform is structured in Browser/Server Red5 architecture. The server receives beam status and surface delta signal from VisionRT AlignRT system, tidal volume from a spirometer, and real-time images from in-room video cameras. The server processes all the received information and sends to clients computers (therapist and patient) to display. The therapist client also allows therapists to enter treatment progress and display on patient client to inform patients. The patient client is built with a Raspberry Pi unit and a pico projector mounted at superior couch tip. The display is projected towards the inferior direction on a paper screen clamped to the side of the couch.

Results: The platform is implemented on two projects – pediatric radiation therapy with movie induced sedation effect (PROMISE) and voluntary deep inspiration breath hold (DIBH) studies. PROMISE project utilizes this audio-video feedback system to limit/eliminate repeated general anesthesia. The developed feedback system acquires patient motion information from AlignRT system. The sever computer sets three motion ranges (normal/warning/out-of-tolerance) and sends a visual signal to the patient client. If the motion exceeds the tolerance, the movie is stopped by the server and the beam is interrupted by AlignRT. For voluntary DIBH, the server instantly processes both AlighRT delta information and spirometer tidal volume signal, and sends the breathing signal and instruction to the client. No significant signal display delay was observed.

Conclusion: The developed in-room audio-video feedback platform provides patients the ability to view their radiotherapy treatment status, which is useful for adopting treatment coaching to improve treatment quality.

Funding Support, Disclosures, and Conflict of Interest: This project is funded by: CPRIT- RP 160190: Pediatric Radiation Oncology with Movie Induced Sedation Effect (PROMISE).

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