MEDRADSC 2X03 Lecture Notes - Lecture 3: Inelastic Scattering, Elastic Scattering, Radiation Therapy
17 Mar 2018
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Document Summary
Produced as by-product of x ray and electron beams in linear accelerators operating at. 10mev or higher: no doors in a radiation therapy suite has hallways bc with these high energy neutrons can still go places bc they have so much energy = safeguarding. Experience multiple scatterings within room (walls, floor, ceiling) ~free radicals are not charged particles vacancy in outer shell makes it reactive it has no charged particles bc there is still a balance of protons and electrons. Medrad 2x03 carbon or oxygen nucleus to produce three or four gamma particles respectively. Did the ionising radiation interact directly with the dna or a middle man (i. e. water) first. Directly ionizing: collisional, high energy charged particles are directly ionizing directly ionizing the dna, analogy: bowling ball, collisional interaction of electrostatic fields causes ionization, high energy charged particles and directly ionizing i. e high energy electrons, protons, alpha particles. Chemical change to induce a mutation or even cell death.
