intensifying screen(redirected from intensity of a radiographic beam)
Also found in: Encyclopedia.
2. to separate well individuals in a population from those who have an undiagnosed disease, defect, or other pathologic condition or who are at high risk by means of tests, examinations, or other procedures. See also screening.
Bjerrum screen tangent screen.
fluoroscopic screen a phosphorescent screen that shows the movement and relationship of organs and structures in fluoroscopy.
intensifying screen a fluorescent screen used in conjunction with x-ray film to enhance the effect of the radiation and reduce dosage to the patient. The screen must be matched to the emissivity range; the emissivity of phosphorus is similar to that of the human eye, so that phosphors absorb x-ray energy and convert it to visible light.
tangent screen a large square of black cloth with a central mark for fixation; used with a campimeter in mapping the field of vision.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a screen (6) used in radiography.
Farlex Partner Medical Dictionary © Farlex 2012
in·ten·si·fy·ing screen(in-tensi-fī-ing skrēn)
Material consisting of phosphors present in the radiographic cassette that converts the invisible energy of an x-ray beam into visible light energy, augmenting the intensity of film exposure.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012