Clinically useful radiation from cobalt 60 is
Correct Answer: Gamma radiation
Description: Cobalt units produce stable, dichromatic gamma beams of 1.17 and 1.33 MeV, resulting in an average beam energy of 1.25 MeV. The cobalt-60 isotope has a half-life of 5.3 years Reference: Eric J Hall Textbook of Radiobiology for Radiologist; 5th edition
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Radiology
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