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Diode-based transmission detector for IMRT delivery monitoring: a validation study.

Publication ,  Journal Article
Li, T; Wu, QJ; Matzen, T; Yin, F-F; O'Daniel, JC
Published in: J Appl Clin Med Phys
September 8, 2016

The purpose of this work was to evaluate the potential of a new transmission detector for real-time quality assurance of dynamic-MLC-based radiotherapy. The accuracy of detecting dose variation and static/dynamic MLC position deviations was measured, as well as the impact of the device on the radiation field (surface dose, transmission). Measured dose variations agreed with the known variations within 0.3%. The measurement of static and dynamic MLC position deviations matched the known deviations with high accuracy (0.7-1.2 mm). The absorption of the device was minimal (~ 1%). The increased surface dose was small (1%-9%) but, when added to existing collimator scatter effects could become significant at large field sizes (≥ 30 × 30 cm2). Overall the accuracy and speed of the device show good potential for real-time quality assurance.

Duke Scholars

Published In

J Appl Clin Med Phys

DOI

EISSN

1526-9914

Publication Date

September 8, 2016

Volume

17

Issue

5

Start / End Page

235 / 244

Location

United States

Related Subject Headings

  • Surface Properties
  • Scattering, Radiation
  • Radiotherapy, Intensity-Modulated
  • Radiotherapy Planning, Computer-Assisted
  • Radiotherapy Dosage
  • Quality Assurance, Health Care
  • Photons
  • Nuclear Medicine & Medical Imaging
  • Humans
  • 5105 Medical and biological physics
 

Citation

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Li, T., Wu, Q. J., Matzen, T., Yin, F.-F., & O’Daniel, J. C. (2016). Diode-based transmission detector for IMRT delivery monitoring: a validation study. J Appl Clin Med Phys, 17(5), 235–244. https://doi.org/10.1120/jacmp.v17i5.6204
Li, Taoran, Q Jackie Wu, Thomas Matzen, Fang-Fang Yin, and Jennifer C. O’Daniel. “Diode-based transmission detector for IMRT delivery monitoring: a validation study.J Appl Clin Med Phys 17, no. 5 (September 8, 2016): 235–44. https://doi.org/10.1120/jacmp.v17i5.6204.
Li T, Wu QJ, Matzen T, Yin F-F, O’Daniel JC. Diode-based transmission detector for IMRT delivery monitoring: a validation study. J Appl Clin Med Phys. 2016 Sep 8;17(5):235–44.
Li, Taoran, et al. “Diode-based transmission detector for IMRT delivery monitoring: a validation study.J Appl Clin Med Phys, vol. 17, no. 5, Sept. 2016, pp. 235–44. Pubmed, doi:10.1120/jacmp.v17i5.6204.
Li T, Wu QJ, Matzen T, Yin F-F, O’Daniel JC. Diode-based transmission detector for IMRT delivery monitoring: a validation study. J Appl Clin Med Phys. 2016 Sep 8;17(5):235–244.

Published In

J Appl Clin Med Phys

DOI

EISSN

1526-9914

Publication Date

September 8, 2016

Volume

17

Issue

5

Start / End Page

235 / 244

Location

United States

Related Subject Headings

  • Surface Properties
  • Scattering, Radiation
  • Radiotherapy, Intensity-Modulated
  • Radiotherapy Planning, Computer-Assisted
  • Radiotherapy Dosage
  • Quality Assurance, Health Care
  • Photons
  • Nuclear Medicine & Medical Imaging
  • Humans
  • 5105 Medical and biological physics