3. A 60Co radiation therapy unit is equipped with a 1000 Ci source. The source to skin distance is 100 cm. Estimate how many photons per second are incident on a 1 mm x 1 mm area of skin of a patient. Neglect air attenuation.© BrainMass Inc. brainmass.com March 5, 2021, 12:29 am ad1c9bdddf
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The expert examines the number of photons for radiation therapy.