Cyclotrons2013 - List of Keywords (photon)

Paper	Title	Other Keywords	Page
WEPSH007	Radiochromic Film as a Dosimetric Tool for Low Energy Proton Beams	proton, cyclotron, ion, radiation	397
	S. Devic, S. Aldelaijan, F.M. Alrumayan, F. Alzorkani, B.M. Moftah, M. Shehadeh King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia
	Funding: King Abdulaziz City for Science and Technology (KACST), Grant No 11-BIO1428-20 EBT3 and HDV2 GAFCHROMICTM films were tested for dose measurements at a 26.5 MeV and 6 mm Bragg peak proton beam. Beam output was calibrated using IAEA TRS-398 reference dosimetry protocol with calibrated chamber in water. Films were calibrated in terms of dose to water by exposing calibration film pieces within a solid water phantom at depth of 3 mm. EBT3 films were irradiated to doses of up to 10 Gy with both 4 MV photon and 26.5 MeV proton beams, while pieces of the HDV2 radiochromic films were irradiated to doses of up to 128 Gy proton beam. Irradiated pieces of the EBT3 films were tested for activation using Germanium detector. Their energy spectra were measured over a period of 40 minutes. EBT3 film model response was 3 times higher for protons than photons. When irradiated in proton beam the EBT3 was 24 times more sensitive than HDV2 films. For the EBT3 film model, few proton-activated processes were identified resulting in short-lived radioisotopes. EBT3 film can be used for measurements for doses of up to 10 Gy using a green color channel of the scanned images, while the red color channel of the HDV2 scanned film images can be used for measurements of much higher doses.

Paper

Title

Other Keywords

Page

WEPSH007

Radiochromic Film as a Dosimetric Tool for Low Energy Proton Beams

proton, cyclotron, ion, radiation

397

S. Devic, S. Aldelaijan, F.M. Alrumayan, F. Alzorkani, B.M. Moftah, M. Shehadeh
King Faisal Specialist Hospital and Research Centre, Riyadh 11211, Kingdom of Saudi Arabia

Funding: King Abdulaziz City for Science and Technology (KACST), Grant No 11-BIO1428-20
EBT3 and HDV2 GAFCHROMICTM films were tested for dose measurements at a 26.5 MeV and 6 mm Bragg peak proton beam. Beam output was calibrated using IAEA TRS-398 reference dosimetry protocol with calibrated chamber in water. Films were calibrated in terms of dose to water by exposing calibration film pieces within a solid water phantom at depth of 3 mm. EBT3 films were irradiated to doses of up to 10 Gy with both 4 MV photon and 26.5 MeV proton beams, while pieces of the HDV2 radiochromic films were irradiated to doses of up to 128 Gy proton beam. Irradiated pieces of the EBT3 films were tested for activation using Germanium detector. Their energy spectra were measured over a period of 40 minutes. EBT3 film model response was 3 times higher for protons than photons. When irradiated in proton beam the EBT3 was 24 times more sensitive than HDV2 films. For the EBT3 film model, few proton-activated processes were identified resulting in short-lived radioisotopes. EBT3 film can be used for measurements for doses of up to 10 Gy using a green color channel of the scanned images, while the red color channel of the HDV2 scanned film images can be used for measurements of much higher doses.