Abstract：
:The purpose of this paper is to describe an outline of a proton therapy system in Nagoya Proton Therapy Center (NPTC). The NPTC has a synchrotron with a linac injector and three treatment rooms: two rooms are equipped with a gantry and the other one is equipped with a fixed horizontal beamline. One gantry treatment room has a pencil beam scanning treatment delivery nozzle. The other two treatment rooms have a passive scattering treatment delivery nozzle. In the scanning treatment delivery nozzle, an energy absorber and an aperture system to treat head and neck cancer have been equipped. In the passive treatment delivery nozzle, a multi-leaf collimator is equipped. We employ respiratory gating to treat lung and liver cancers for passive irradiation. The proton therapy system passed all acceptance tests. The first patient was treated on February 25, 2013, using passive scattering fixed beams. Respiratory gating is commonly used to treat lung and liver cancers in the passive scattering system. The MLCs are our first choice to limit the irradiation field. The use of the aperture for scanning irradiation reduced the lateral fall off by half or less. The energy absorber and aperture system in scanning delivery is beneficial to treat head and neck cancer.
journal_name
Australas Phys Eng Sci Medjournal_title
Australasian physical & engineering sciences in medicineauthors
Toshito T,Omachi C,Kibe Y,Sugai H,Hayashi K,Shibata H,Yasui K,Tanaka K,Yamamoto T,Yoshida A,Nikawa E,Asai K,Shimomura A,Okumura I,Suzuki T,Kinou H,Isoyama S,Ogino H,Iwata H,Shibamoto Y,Mizoe Jdoi
10.1007/s13246-016-0456-8subject
Has Abstractpub_date
2016-09-01 00:00:00pages
645-54issue
3eissn
0158-9938issn
1879-5447pii
10.1007/s13246-016-0456-8journal_volume
39pub_type
杂志文章abstract：:In general, a weighting factor of one is applied for low linear energy transfer radiations. However, several studies indicate that relative biological effectiveness (RBE) of low energy photons and electrons is greater than one. The aim of this current study was calculating the RBE of I-131 radiation relative to Co-60 ...
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journal_title：Australasian physical & engineering sciences in medicine
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