Estimation of error sources for optical head tracking in cranial radiation therapy

Abstract

There is a growing demand for high-accuracy and frameless solutions for cranial radiation therapy. Among different approaches for intra-fractional head tracking using X-Ray or MV imaging or Cone Beam CT, optical head tracking in particular promises high spatial and temporal resolution with a minimum of system latency and no additional dose exposition. It may therefore be ideal for motion-compensated or high-accuracy cranial radiation therapy. Nevertheless, up to now optical systems lack accuracy and are therefore only found in prototypes or test setups. Using a consumer-grade optical rangefinder, we have built a test setup to systematically quantify critical error sources for tracking systems based on triangulation. Subsequently, we present and discuss potential solutions to minimize the error.
Original languageEnglish
Title of host publication11. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie (CURAC)
Number of pages4
Volume1429
PublisherCEUR-WS.org
Publication date01.11.2012
Pages150-153
Publication statusPublished - 01.11.2012
Event11. Jahrestagung der Deutschen Gesellschaft für Computer- und Roboterassistierte Chirurgie, CURAC 2012
- Düsseldorf, Germany
Duration: 15.11.201216.11.2012

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