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Neutron-beam radiotherapy systems designed to deliver a beam of low-energy (epithermal) neutrons. The radiation is usually directed to a tumor site that was previously treated with boron-10 or other suitable neutron capture element that can penetrate the blood brain barrier, selectively target neoplastic cells, and persist therein for suitable periods of time before radiation (e.g., boron neutron capture therapy [BNCT]). The neutrons are captured by the boron and produce charged particles that are capable of damaging or destroying tumor tissue. Currently, this therapy is mostly used to treat malignant gliomas.
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