TY - JOUR
T1 - Dual wavelength optical CT scanning of anthropomorphic shaped 3D dosimeters
AU - De Deene, Yves
N1 - Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
PY - 2015
Y1 - 2015
N2 - To create an optical density map of 3D dosimeter phantoms, the ratio of the transmission profile (either a line or planar) acquired after irradiation of the dosimeter and a pre-irradiation reference scan of the same dosimeter phantom is taken. Any uncertainty in repositioning of the phantom may result in an uncertainty in the optical density map and finally also in the derived dose maps. Correct repositioning is paramount when scanning noncylindrical dosimeter phantoms as any repositioning error will give rise to severe imaging artifacts. We hereby propose a different scanning technique that does not require any repositioning of the dosimeter phantom. In this method, no pre-irradiation san is recorded but the dosimeter phantom is scanned twice with light at two different wavelengths. It is demonstrated that this method is accurate in scanning non-cylindrical anthropomorphic shaped phantoms.
AB - To create an optical density map of 3D dosimeter phantoms, the ratio of the transmission profile (either a line or planar) acquired after irradiation of the dosimeter and a pre-irradiation reference scan of the same dosimeter phantom is taken. Any uncertainty in repositioning of the phantom may result in an uncertainty in the optical density map and finally also in the derived dose maps. Correct repositioning is paramount when scanning noncylindrical dosimeter phantoms as any repositioning error will give rise to severe imaging artifacts. We hereby propose a different scanning technique that does not require any repositioning of the dosimeter phantom. In this method, no pre-irradiation san is recorded but the dosimeter phantom is scanned twice with light at two different wavelengths. It is demonstrated that this method is accurate in scanning non-cylindrical anthropomorphic shaped phantoms.
UR - http://www.scopus.com/inward/record.url?scp=84946224136&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/573/1/012058
DO - 10.1088/1742-6596/573/1/012058
M3 - Conference paper
AN - SCOPUS:84946224136
SN - 1742-6588
VL - 573
SP - 1
EP - 4
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012058
T2 - 8th International Conference on 3D Radiation Dosimetry
Y2 - 4 September 2013 through 7 September 2013
ER -