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2. The half-value layer of 140 keV y-ray of Tc-99m is approximately 0.03 cm of lead. Calculate linear attenuation coefficient of the lead for 140 keV photons and the lead needed to reduce exposure of point source of radiation by 70%.

2. The half-value layer of 140 keV y-ray of Tc-99m is approximately 0.03 cm of lead. Calculate linear attenuation coefficient of the lead for 140 keV photons and the lead needed to reduce exposure of point source of radiation by 70%.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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2. The half-value layer of 140 keV y-ray of Tc-99m is approximately 0.03 cm of lead. Calculate linear attenuation coefficient of the lead for 140 keV photons and the lead needed to reduce exposure of point source of radiation by 70%.
Transcribed Image Text:2. The half-value layer of 140 keV y-ray of Tc-99m is approximately 0.03 cm of lead. Calculate linear attenuation coefficient of the lead for 140 keV photons and the lead needed to reduce exposure of point source of radiation by 70%.
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