期刊
FRONTIERS IN ONCOLOGY
卷 11, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fonc.2021.624786
关键词
heavy-ion radiotherapy; carbon-ion radiotherapy; helium-ion irradiation; radiation therapy; multi-ion radiotherapy
类别
资金
- Cancer Center Support (Core) from the National Cancer Institute, National Institutes of Health [P30 CA016672]
The research on high linear energy transfer (LET) radiotherapy has been ongoing for over half a century, with a focus now on carbon-ion beams due to their promising suitability in treating hypoxic and/or radioresistant cancers. Challenges remain in terms of technical development and limitations imposed by the physical properties of the beams.
Research into high linear energy transfer (LET) radiotherapy now spans over half a century, beginning with helium and deuteron treatment in 1952 and today ranging from fast neutrons to carbon-ions. Owing to pioneering work initially in the United States and thereafter in Germany and Japan, increasing focus is on the carbon-ion beam: 12 centers are in operation, with five under construction and three in planning. While the carbon-ion beam has demonstrated unique and promising suitability in laboratory and clinical trials toward the hypofractionated treatment of hypoxic and/or radioresistant cancer, substantial developmental potential remains. Perhaps most notable is the ability to paint LET in a tumor, theoretically better focusing damage delivery within the most resistant areas. However, the technique may be limited in practice by the physical properties of the beams themselves. A heavy-ion synchrotron may provide irradiation with multiple heavy-ions: carbon, helium, and oxygen are prime candidates. Each ion varies in LET distribution, and so a methodology combining the use of multiple ions into a uniform LET distribution within a tumor may allow for even greater treatment potential in radioresistant cancer.
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