PubMed · 3357974
Hinged shutter for image alternator.
Abstract
A hinged, mobile shutter was designed to reduce the effect of extraneous light on the interpretion of chest radiographs and angiograms. The authors believe that the device greatly facilitates the daily work by decreasing eye fatigue and probably by increasing the signal-to-noise ratio.
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P Stark, D C Smith. 1988. Hinged shutter for image alternator.. https://doi.org/10.1148/radiology.167.2.3357974
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