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Regarding radiation dose: a. Linear energy transfer (LET) is the total energy deposited by a particle along its entire path b. An alpha particle has a lower LET than an electron c. Particles with high LET are more hazardous than low-LET particles d. The effective dose takes into account the radio sensitivity of the tissues e. 1 Sv = 1 J kg-1 |
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Answer» a. False. LET is the sum of the energy deposited in tissue per unit path length it travels. b. False. Alpha particles are much heavier than electrons and hence for the same initial energy as an electron, they travel a much shorter distance and therefore disperse more energy per unit area travelled. c. True. High-LET particles disperse more energy per unit area travelled, resulting in more non-repairable damage. d. True. The effective dose incorporates factors to account for the variable radio sensitivity of organs and tissues. e. True. |
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