A feasibility study of using a 3D-printed tumor model scintillator to verify the energy absorbed to a tumoropen access
- Authors
- Kim, Tae Hoon; Lee, Sangmin; Kim, Dong Geon; Jeong, Jae Young; Yang, Hye Jeong; Schaarschmidt, Thomas; Choi, Sang Hyoun; Cho, Gyu-Seok; Kim, Yong Kyun; Chung, Hyun-Tai
- Issue Date
- Sep-2021
- Publisher
- Korean Nuclear Society
- Keywords
- 3D-printed tumor model; Absorbed energy; Monte Carlo simulation; Plastic scintillator; Treatment planning system; Volumetric dosimetry
- Citation
- Nuclear Engineering and Technology, v.53, no.9, pp.3018 - 3025
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Nuclear Engineering and Technology
- Volume
- 53
- Number
- 9
- Start Page
- 3018
- End Page
- 3025
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/141183
- DOI
- 10.1016/j.net.2021.03.033
- ISSN
- 1738-5733
- Abstract
- The authors developed a volumetric dosimetry detector system using in-house 3D-printable plastic scintillator resins. Three tumor model scintillators (TMSs) were developed using magnetic resonance images of a tumor. The detector system consisted of a TMS, an optical fiber, a photomultiplier tube, and an electrometer. The background signal, including the Cherenkov lights generated in the optical fiber, was subtracted from the output signal. The system showed 2.1% instability when the TMS was reassembled. The system efficiencies in collecting lights for a given absorbed energy were determined by calibration at a secondary standard dosimetry laboratory (kSSDL) or by calibration using Monte Carlo simulations (ksim). The TMSs were irradiated in a Gamma Knife® Icon™ (Elekta AB, Stockholm, Sweden) following a treatment plan. The energies absorbed to the TMSs were measured and compared with a calculated value. While the measured energy determined with kSSDL was (5.84 ± 3.56) % lower than the calculated value, the energy with ksim was (2.00 ± 0.76) % higher. Although the TMS detector system worked reasonably well in measuring the absorbed energy to a tumor, further improvements in the calibration procedure and system stability are needed for the system to be accepted as a quality assurance tool.
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