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Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System.

Publication ,  Journal Article
Wang, Z; Thomas, A; Newton, J; Ibbott, G; Deasy, J; Oldham, M
Published in: J Phys Conf Ser
December 7, 2010

Achieving adequate verification and quality-assurance (QA) for radiosurgery treatment of trigeminal-neuralgia (TGN) is particularly challenging because of the combination of very small fields, very high doses, and complex irradiation geometries (multiple gantry and couch combinations). TGN treatments have extreme requirements for dosimetry tools and QA techniques, to ensure adequate verification. In this work we evaluate the potential of Presage/Optical-CT dosimetry system as a tool for the verification of TGN distributions in high-resolution and in 3D. A TGN treatment was planned and delivered to a Presage 3D dosimeter positioned inside the Radiological-Physics-Center (RPC) head and neck IMRT credentialing phantom. A 6-arc treatment plan was created using the iPlan system, and a maximum dose of 80Gy was delivered with a Varian Trilogy machine. The delivered dose to Presage was determined by optical-CT scanning using the Duke Large field-of-view Optical-CT Scanner (DLOS) in 3D, with isotropic resolution of 0.7mm(3). DLOS scanning and reconstruction took about 20minutes. 3D dose comparisons were made with the planning system. Good agreement was observed between the planned and measured 3D dose distributions, and this work provides strong support for the viability of Presage/Optical-CT as a highly useful new approach for verification of this complex technique.

Duke Scholars

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

December 7, 2010

Volume

250

Issue

1

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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Wang, Z., Thomas, A., Newton, J., Ibbott, G., Deasy, J., & Oldham, M. (2010). Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System. J Phys Conf Ser, 250(1). https://doi.org/10.1088/1742-6596/250/1/012058
Wang, Z., A. Thomas, J. Newton, G. Ibbott, J. Deasy, and M. Oldham. “Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System.J Phys Conf Ser 250, no. 1 (December 7, 2010). https://doi.org/10.1088/1742-6596/250/1/012058.
Wang Z, Thomas A, Newton J, Ibbott G, Deasy J, Oldham M. Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System. J Phys Conf Ser. 2010 Dec 7;250(1).
Wang, Z., et al. “Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System.J Phys Conf Ser, vol. 250, no. 1, Dec. 2010. Pubmed, doi:10.1088/1742-6596/250/1/012058.
Wang Z, Thomas A, Newton J, Ibbott G, Deasy J, Oldham M. Dose Verification of Stereotactic Radiosurgery Treatment for Trigeminal Neuralgia with Presage 3D Dosimetry System. J Phys Conf Ser. 2010 Dec 7;250(1).
Journal cover image

Published In

J Phys Conf Ser

DOI

ISSN

1742-6588

Publication Date

December 7, 2010

Volume

250

Issue

1

Location

England

Related Subject Headings

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