<prompt> Shield used in radiology are made up of?LeadCopperMercurySilica  <response>: ANSWER: A LeadREF: Park 20th ed p. 651Effective protective measures in radiology units should include proper use of lead shields and lead rubber aprons 0.5 mm of lead and a film badge or dosimeter.Permissible dose of radiation from man made sources: 5 radyear 