title: Prediction of output factor, range, and spread-out bragg peak for proton therapy.
abstract: In proton therapy, patient quality assurance (QA) requires measuring the beam range, spread-out Bragg peak (SOBP), and output factor. If these values can be predicted by using sampling measurements or previous QA data to find the correlation between beam setup parameters and measured data, efforts expended on patient QA can be reduced. Using sampling data, we predicted the range, SOBP, and output factor of the proton beam. To obtain sampling data, we measured the range, SOBP, and output factor for 14 data points at each of 24-beam range options, from 4-28 cm. Prediction conformity was evaluated by the difference between predicted and measured patient QA data. Results indicated that for 60% of patients, the values could be predicted within 3% of dose uncertainty.
authors.affiliation: Proton Therapy Center, National Cancer Center, Gyeonggi-do, Republic of Korea.
authors.forename: Dong Wook
authors.initials: DW
authors.lastname: Kim
authors.forename: Young Kyung
authors.initials: YK
authors.lastname: Lim
authors.forename: Sung Hwan
authors.initials: SH
authors.lastname: Ahn
authors.forename: Jungwook
authors.initials: J
authors.lastname: Shin
authors.forename: Dongho
authors.initials: D
authors.lastname: Shin
authors.forename: Myongguen
authors.initials: M
authors.lastname: Yoon
authors.forename: Se Byeong
authors.initials: SB
authors.lastname: Lee
authors.forename: Dae Yong
authors.initials: DY
authors.lastname: Kim
authors.forename: Sung Yong
authors.initials: SY
authors.lastname: Park
mesh_terms: D003198:Computer Simulation; D006801:Humans; D008954:Models, Biological; D015233:Models, Statistical; D009369:Neoplasms / Q000503:physiopathology* / Q000532:radiotherapy*; D061766:Proton Therapy; D011874:Radiometry / Q000379:methods*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D011882:Radiotherapy, High-Energy / Q000379:methods*; D012542:Scattering, Radiation; D011522:Protons
chemical_list: D011522:Protons