Nw. Marshall et al., AN INVESTIGATION INTO THE RADIATION-DOSE ASSOCIATED WITH DIFFERENT IMAGING-SYSTEMS FOR CHEST RADIOLOGY, British journal of radiology, 67(796), 1994, pp. 353-359
With the advent of digital imaging there now exists a range of imaging
techniques which may be used to acquire chest images. The purpose of
this investigation was to determine typical radiation doses associated
with the use of a conventional film-screen system, 100 mm film techni
que, large-field digital image intensifier radiography, computed radio
graphy and a scanning slit system (AMBER, Oldeft, Netherlands), Radiat
ion doses to relevant organs were assessed using direct measurements m
ade with lithium fluoride thermoluminescent dosemeters, together with
calculations made using normalized dose data. Typical doses were asses
sed using anthropomorphic phantoms for both postero-anterior and later
al projections. The risk-related quantities, i.e. effective dose and e
ffective dose equivalent, were then calculated from these organ doses.
When compared on the basis of effective dose equivalent, certain imag
ing techniques were seen to offer the potential for significant dose r
eduction, possibly at the expense of image quality.