A Co-60 source gives a gamma dose rate of 120 μSv/h at 2.2 m away. At what distance (in meter) will the dose rate be 59 µSv/h? Provide your answer with 1 decimal place.
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- technetium half life is 4.8 hours. If a patient receicves a dose with an activity of 35.9 mCi of technetium for cardiac imaging how much radioactivity will be left in the patient's body 96 hours after injection?A Geiger Counter reading of a radio active sample Is initally Cceses 6920 COunts per minute. The same sample gives a reading of 922 COunts per minute 10.9n later. what Is the samples half- 11fe.how much dose is absorbed in 30 min in a sphere of water 1cm in diameter, with an infinitesimally small P-32 souce placed at center of the sphere, with 6x105 disintegrations per gram of water? Eb- = 1.71 MeV A) 12 cGy B) 24 cGy C) 29 cGy D) 6cGy E) 59 cGy
- Radiation from a point source follows an inverse-square law in which the amount of radiation received is proportional to 1/d2, where d is distance. If a Geiger counter that is 1 m away from a small source reads 50 counts per minute, what will its reading be a) 2 m from the source b) 3 m from the source.A particular radioactive source produces 100 mrad of 2-MeV gamma rays per hour at a distance of 1.0 m. (a) How long could a person stand at this distance before accumulating an intolerable dose of 1 rem? (b) Assuming the gamma radiation is emitted uniformly in all directions, at what distance would a person recieve a dose of 10 mrad/h from this source? dont provode hand written solutionCalculate the volume needed to dispense a 21 mCi dose from a Tc-99m DTPA vial containing 400 mCi in 6 ml. Answer:
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