An initial investigation of Optical CT and MR scanning of gel dosimeters

  • Mark Oldham
  • Jeffrey H. Siewerdsen
  • David A. Jaffray
Conference paper


Radiation sensitive gels, including BANG and Fricke-gels, are at the forefront of research into improved dosimetry techniques. Despite being the only dosimeter that offers true 3D information about the dose-distribution, radiation sensitive gels have to-date made little impact in most clinics. This is due to the fact that the field is still new and rapidly developing, but also due to the high cost and high noise characteristics of the standard way of reading these gels — MR scanning. To circumvent these difficulties several groups are looking at an alternative low-cost approach to reading the gels, using laser based optical-CT scanning [1–4].


Field Detector Optical Calibration Optical Match Dosimetric Verification William Beaumont Hospital 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    J. C. Gore, M. Ranade, M. J. Maryanski, and R. J. Schulz, I: Development of the Optical Scanner, Phys.Med. Biol. 41, pp.2695–704, 1996PubMedCrossRefGoogle Scholar
  2. [2]
    M.J. Maryanski, Y.Z. Zastavker, and J.C. Gore, II: Optical Properties of the BANG Polymer Gel, Phys. Med. Biol. 41, pp. 2705–2717, 1996PubMedCrossRefGoogle Scholar
  3. [3]
    Kelly BG, Jordan KJ, Battista JJ Optical CT reconstruction of 3D dose distributions using the (FBX) gel dosimeter, Med Phys 1998 Sep;25(9): 1741–50PubMedCrossRefGoogle Scholar
  4. [4]
    Jordan K, Developmental issues for opticalCT and gel dosimetry, Proc 1st Int Conf. on Rad. Ther. And Gel Dosimetry, available CDROM ISBN 0-9684873-2-7Google Scholar
  5. [5]
    Oldham M, McJury M, Baustert IB, Webb S, Leach MO Improving calibration accuracy in gel dosimetry, Phys Med Biol 1998 Oct;43(10):2709–20PubMedCrossRefGoogle Scholar
  6. [6]
    McJury M, Tapper PD, Cosgrove VP, Murphy PS, Griffin S, Leach MO, Webb S, Oldham M, 3D dosimetry around a HDR 192Ir source using a PAG dosimeter, Phys Med Biol 1999 Oct;44(10):2431–44PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Mark Oldham
    • 1
  • Jeffrey H. Siewerdsen
    • 1
  • David A. Jaffray
    • 1
  1. 1.Radiation OncologyWilliam Beaumont HospitalRoyal OakUSA

Personalised recommendations