Chapter title |
Neutron capture therapy beams at the MIT Research Reactor.
|
---|---|
Chapter number | 15 |
Book title |
Neutron Beam Design, Development, and Performance for Neutron Capture Therapy
|
Published in |
Basic life sciences, January 1990
|
DOI | 10.1007/978-1-4684-5802-2_15 |
Pubmed ID | |
Book ISBNs |
978-1-4684-5804-6, 978-1-4684-5802-2
|
Authors |
Choi, J R, Clement, S D, Harling, O K, Zamenhof, R G, Choi, J. R., Clement, S. D., Harling, O. K., Zamenhof, R. G. |
Abstract |
Several neutron beams that could be used for neutron capture therapy at MITR-II are dosimetrically characterized and their suitability for the treatment of glioblastoma multiforme and other types of tumors are described. The types of neutron beams studied are: 1) those filtered by various thicknesses of cadmium, D2O, 6Li, and bismuth; and 2) epithermal beams achieved by filtration with aluminum, sulfur, cadmium, 6Li, and bismuth. Measured dose vs. depth data are presented in polyethylene phantom with references to what can be expected in brain. The results indicate that both types of neutron beams are useful for neutron capture therapy. The first type of neutron beams have good therapeutic advantage depths (approximately 5 cm) and excellent in-phantom ratios of therapeutic dose to background dose. Such beams would be useful for treating tumors located at relatively shallow depths in the brain. On the other hand, the second type of neutron beams have superior therapeutic advantage depths (greater than 6 cm) and good in-phantom therapeutic advantage ratios. Such beams, when used along with bilateral irradiation schemes, would be able to treat tumors at any depth in the brain. Numerical examples of what could be achieved with these beams, using RBEs, fractionated-dose delivery, unilateral, and bilateral irradiation are presented in the paper. Finally, additional plans for further neutron beam development at MITR-II are discussed. |
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