Delivery verification using 3D dose reconstruction based on fluorescence measurement in a carbon beam scanning irradiation system.
The authors have developed a method to reconstruct the 3D dose distribution in a particle beam scanning irradiation system. In this scheme, 3D dose distribution is reconstructed by using the measured images of fluence distribution, which are taken for each iso-energy slice (i.e., the unit of the depth scanning). A fluorescent screen with a CCD camera is used to measure the fluence distribution. This system was installed at the HIMAC experimental port and tested by using carbon ion beams. Since a maximum difference between the reconstructed dose and the ionization chamber measurement was around 5% in the target volume, this system can be useful for quick verification of 3D dose distribution.
Furukawa
Takuji
T
Medical Physics Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan. t_furu@nirs.go.jp
Saotome
Naoya
N
Inaniwa
Taku
T
Sato
Shinji
S
Noda
Koji
K
Kanai
Tatsuaki
T
D002138:Calibration; D002244:Carbon / Q000737:chemistry*; D005453:Fluorescence; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D015203:Reproducibility of Results
D002244:Carbon