Radiology, Vol 122, 479-487, Copyright © 1977 by Radiological Society of North America
Noise reduction by radiographic magnification
K Doi and H Imhof
Effective noise in the rare-earth system can be substantially reduced by
use of radiographic magnification technique. The basic imaging properties
of the rare-earth system (Alpha 8-XM) and the medium-speed system (Par-RP)
were evaluated by the Wiener spectra, modulation transfer functions, and
H&D curves.The visibility of radiographic details was determined with
simple test objects. Results indicate that, as the magnification increases,
the effective noise in the rare-earth system is reduced, and that the
visibility of small structures can be improved.
