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A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT.

Publication ,  Journal Article
Stunja, L; Thomas, A; Adamovics, J; Deasy, J; Oldham, M
Published in: J Phys Conf Ser
2010

INTRODUCTION: To develop and characterize the accuracy and reproducibility of a quad-phantom dosimeter which will serve as an independent verification tool during commissioning of a PRESAGE/optical-CT 3D dosimetry system. METHODS: A 16cm × 12cm cylindrical quad-phantom was constructed from four pieces of solid polyurethane mimicking the PRESAGE material. Films were placed and anchored in orthogonal planes and the quad-phantom was fastened tightly together and placed in a water-filled Styrofoam container for irradiation. A simple, two-field plan consisting of 6×6cm anterior-posterior and right-lateral 6MV photon beams (400cGy) was delivered three times (fresh films inserted for each) with a Varian Clinac 600C. Image registration was performed in the Computational Environment for Radiological Research (CERR) and dose profiles and gamma analysis was performed in CERR and MATLAB. RESULTS #ENTITYSTARTX00026; DISCUSSION: Excellent reproducibility was observed during the irradiations, with ~2.3% standard deviation between all pixels. Using a 3%, 3mm gamma criteria, excellent dosimetric accuracy was observed, with 98.8% and 96.3% passing rates in the sagittal and axial planes, respectively. CONCLUSION: The preliminary results indicate that the quad-phantom can serve as a reproducible and accurate system for high resolution dosimetry in orthogonal planes and should serve as an effective verification tool for PRESAGE/optical-CT in more challenging clinical scenarios.

Duke Scholars

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

2010

Volume

250

Issue

1

Start / End Page

12097

Location

England

Related Subject Headings

  • 51 Physical sciences
  • 0299 Other Physical Sciences
  • 0204 Condensed Matter Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Stunja, L., Thomas, A., Adamovics, J., Deasy, J., & Oldham, M. (2010). A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT. J Phys Conf Ser, 250(1), 12097. https://doi.org/10.1088/1742-6596/250/1/012097
Stunja, L., A. Thomas, J. Adamovics, J. Deasy, and M. Oldham. “A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT.J Phys Conf Ser 250, no. 1 (2010): 12097. https://doi.org/10.1088/1742-6596/250/1/012097.
Stunja L, Thomas A, Adamovics J, Deasy J, Oldham M. A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT. J Phys Conf Ser. 2010;250(1):12097.
Stunja, L., et al. “A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT.J Phys Conf Ser, vol. 250, no. 1, 2010, p. 12097. Pubmed, doi:10.1088/1742-6596/250/1/012097.
Stunja L, Thomas A, Adamovics J, Deasy J, Oldham M. A 'quad-phantom' film dosimeter for use as a multi-planar verification tool for PRESAGE/optical-CT. J Phys Conf Ser. 2010;250(1):12097.
Journal cover image

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

2010

Volume

250

Issue

1

Start / End Page

12097

Location

England

Related Subject Headings

  • 51 Physical sciences
  • 0299 Other Physical Sciences
  • 0204 Condensed Matter Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics