title: Determination of radiation reduction to the lens during polymography of the petrous pyramid.
mesh_terms: D002386:Cataract / Q000517:prevention & control; D006801:Humans; D007908:Lens, Crystalline / Q000528:radiation effects*; D010579:Petrous Bone / Q000000981:diagnostic imaging*; D011482:Protective Devices; D011830:Radiation Effects; D011832:Radiation Injuries / Q000517:prevention & control*; D011835:Radiation Protection; D014056:Tomography, X-Ray