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The effects of deep trap population on the thermoluminescence of Al2O3:C
Optically stimulated luminescence of Al2O3
Calculations of neutron dose equivalent exposures from range-modulated proton therapy beams.
The neutron dose equivalent spectra per incident proton (H(E)/p) and total neutron doses equivalent per therapeutic absorbed dose (H/D) were studied using Monte Carlo techniques for various values of range modulation at 54 locations around a passive scattering proton therapy treatment nozzle.
3D prompt gamma imaging for proton beam range verification.
3D PG imaging for proton range verification under clinical beam delivery conditions is possible with a single Compton camera, and shifts in the proton beam range as small as 2 mm could be detected for delivery of a 2 Gy spot.
Measurement and calculation of characteristic prompt gamma ray spectra emitted during proton irradiation.
From the measured spectra it was shown that it is possible to distinguish the characteristic emission lines from the major elemental constituent atoms in the irradiated phantoms during delivery of proton doses similar to those delivered during patient treatment.
Benchmarking analytical calculations of proton doses in heterogeneous matter.
This work validates the usefulness of the ASPB algorithm as a reasonably fast and accurate tool for quality assurance in planning wide beam proton therapy treatment of clinical sites either composed of homogeneous materials or containing laterally extended inhomogeneities that are comparable in density and located away from the Bragg peak depths.
Characterisation of Al2O3 for Use in Thermally and Optically Stimulated Luminescence Dosimetry
- S. McKeever, M. Akselrod, L. E. Colyott, N. A. Larsen, J. Polf, V. Whitley
- Materials Science
- 1 August 1999
This paper discusses several materials aspects which are important in the development and optimisation of Al 2 O 3 :C for both thermoluminescence (TL) and optically stimulated luminescence (OSL)…
Imaging of prompt gamma rays emitted during delivery of clinical proton beams with a Compton camera: feasibility studies for range verification.
- J. Polf, S. Avery, D. Mackin, S. Beddar
- Medicine, PhysicsPhysics in medicine and biology
- 21 September 2015
PGI with a CC for in vivo range verification during proton treatment delivery is feasible, however, improvements in the prototype CC detection efficiency and reconstruction algorithms are necessary to make it a clinically viable PGI system.
Optimizing a three-stage Compton camera for measuring prompt gamma rays emitted during proton radiotherapy.
It is believed it feasible that a three-stage Compton camera could detect a sufficient number of prompt gammas to allow measurement and imaging of prompt gamma emission during proton radiotherapy.
Measurement of characteristic prompt gamma rays emitted from oxygen and carbon in tissue-equivalent samples during proton beam irradiation.
Results indicate that the 6.13 MeV PG emission from (16)O is proportional to the concentration of oxygen in tissue irradiated with proton beams, and shows that it is possible to determine the Concentration of oxygen within tissues irradiated by measuring ( 16)O PG emission.