Construction of a Liquid Scintillation Detector for Relative Megavoltage Dosimetry

• Author / Creator

  Sinn, David J

• A radiation detector geared towards megavoltage external beam radiotherapy has been developed using a liquid scintillator and a charge coupled device (CCD). The liquid scintillator used is BetaMax ES (MP Biomedicals, Santa Ana, CA) and the CCD comes from an SPC880NC webcam (Royal Philips Electronics, Netherlands). Simulations and calculations show this scintillator has excellent radiological water equivalence. The detector was also used to measure the relative dose factors, tissue maximum ratios, physical wedge factors, enhanced dynamic wedge factors and modulation factors for a patientint intensity modulated radiotherapy (IMRT) plan. Tests show that the measured values obtained agree well with a Protea ion chamber.

• Subjects / Keywords

  • Medical physics
  • Scintillator
  • Dosimetry

• Graduation date

  Fall 2012

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R37H06

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.