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A proton-recoil dosimetry system calibrated to D2O-moderated Cf-252. d. A proton-recoil dosimetry system calibrated to AmBe. e. An NTA film dosimetry system calibrated to D2O-moderated Cf-252. 17 A large community hospital wishes you to set up a personnel monitoring program. The following organization information is provided: Department A: The nuclear medicine department is a well-equipped department using technetium-99m for all its studies. The Tc-99m is milked from a generator, and the radiopharmaceuticals are prepared within the nuclear medicine department.

0 u 107 Bq of Na-24 at saturation in an aluminum target of 1-cm2 cross-section and 1-g weight? Assume that the production cross-section is 20 mb. 86 21 Immediately after an irradiation time of 30 hr, what would be the amount of Na-24 present? Assume no initial activity. The half-life of Na-24 is 15 hr. What is the dose equivalent rate to a person standing 1 m from the unshielded Na-24 source in air? 22 You are a consulting health physicist. A client plans to build a 10-MCi Co-60 irradiation facility to sterilize surgical equipment.

110 Assuming a normal cancer fatality rate of 20%, what would be the total probability of developing a fatal cancer for a group of occupationally exposed workers with a 3 in 1000 probability of contracting a radiation-induced fatal cancer? 111 The ICRP-26 risk model for cancer is based on: a. An absolute risk model. b. A relative risk model. c. An absolute and relative risk model. d. A stochastic model. e. A linear stochastic model. 112 The PC Tables are based on: a. An absolute risk model. b. A relative risk model.

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