2011 Fiscal Year Final Research Report
Distinction of neutron dose generated from equipment and patient in proton radiation therapy
| Project/Area Number |
22791209
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Radiation science
|
|---|
| Research Institution | Ibaraki Prefectural University of Health Science |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2010 – 2011
|
| Keywords | 陽子線治療 / 中性子 / 線量分布 |
|---|
| Research Abstract |
To evaluate of the neutron dose generated from the proton radiation therapy equipment of the double scattered type, the high sensitivity thermal neutron detector was developed. In addition, the neutron distribution and the energy spectrum were evaluated in the water phantom that assumed the patient by Monte Carlo calculation. As a result of the evaluation, the ratio of the neutron dose to the proton dose at isocenter in the distance from a beam axis center to 12 cm was 3. 6 mSv/Gy. The neutron exposure in the proton radiation therapy depended on not only the neutron from the equipment but also the proton's colliding with the patent was confirmed.
|
