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Explain Boron neutron capture therapy. |
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Answer» Solution :(i)The affinity of boron -10 for neutrons is the basis of a technique known as born neutron capture THERAPY (BNCT) of treating patients suffering from brai tumours. (ii) It is based on the nuclear reaction that occurs when boron -10 is irradiated with low-energy on the nuclear reaction that occurs when borin -10 is irradiated with low- energy THERMAL neutorna to give high linear energy `alpha`- particles and a Li-particles. (iii) Boron compounds are injected into a patient with a brain tumour and the compunds collect preferentially in the tumour. The tumour area is then irradiated with thermal neutron and results int eh release of an alpha-particle that damages the tissue in the tumour each TIME a boron -10 nucleus captures a neutron. (iv) In this way damages can be limited preferentially to the tumour, leaving the normal brain tissue less affected. (v) BNCT has also been studied as a treatment for several other tumours of the HEAD and NECK, The breast, the prostate, the bladder and the liver. |
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