Prediction of Output Factor, Range, and Spread-Out Bragg Peak for Proton Therapy

Journal Article · Fri Jul 01 04:00:00 EDT 2011 · Medical Dosimetry

DOI:https://doi.org/10.1016/j.meddos.2010.02.006· OSTI ID:21486898

Kim, Dong Wook ^[1]; Lim, Young Kyung ^[2]; Ahn, Sung Hwan; Shin, Jungwook; Shin, Dongho; Yoon, Myongguen ^[1]; Kim, Dae Yong; Park, Sung Yong ^[1]

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1. Proton Therapy Center, National Cancer Center, Gyeonggi-do (Korea, Republic of)
2. Department of Radiation Oncology, Kyeongsang University Hospital, Kyeongsang (Korea, Republic of)

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.

• OSTI ID: 21486898
• Journal Information: Medical Dosimetry, Journal Name: Medical Dosimetry Journal Issue: 2 Vol. 36; ISSN 0958-3947
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
BEAMS
BRAGG CURVE
DIAGRAMS
INFORMATION
MEDICINE
NUCLEAR MEDICINE
NUCLEON BEAMS
PARTICLE BEAMS
PATIENTS
PROTON BEAMS
QUALITY ASSURANCE
RADIOLOGY
RADIOTHERAPY
SAMPLING
THERAPY