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Physicians who use the fluoroscope only occasionally do not find it convenient to equip a dark room for the purpose and are consequently at a disadvantage when working by daylight. To obviate the necessity of heavily screening windows and other avenues of light, a hood can be easily improvised which serves the purpose admirably. A sheet of rubber lead composition is chosen by preference, for it serves also as a protection to the operator. If the latter is not at hand, several layers of newspapers enfolded in a suitable piece of black muslin and fastened to the fluoroscope will effectually shut out the light. So arranged, the observer is in absolute darkness and can see only the image reflected on the fluoroscopic screen.
KING GW. SUBSTITUTE FOR DARK ROOM DURING FLUOROSCOPIC EXAMINATIONS. JAMA. 1906;XLVII(18):1486. doi:10.1001/jama.1906.25210180062002d
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