Abstract
We studied the performance of three computed radiography and three direct radiography
systems with regard to the image noise and entrance skin dose based on a chest phantom.
Images were obtained with kVp of 100, 110, and 120 and mA settings of 1, 2, 4, 8,
and 10. Significant differences of image noise were found in these digital chest radiography
systems (P<.0001). Standard deviation was significantly different when the mAs were changed
(P<.001), but it was independent of the kVp values (P=.08–.85). Up to 44% of radiation dose could be saved when kVp was reduced from 120
to 100 kVp without compromising image quality.
Keywords
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Article info
Publication history
Published online: December 07, 2011
Accepted:
September 27,
2011
Received in revised form:
September 16,
2011
Received:
June 3,
2011
Footnotes
☆Conflict of interest: none.
☆☆The study was partly supported by the National Science Council of Taiwan (NSC09-8291-2-I04-000-1) and the travel grant provided by Australian Academy of Science as International Science Linkage between Curtin University and Central Taiwan University of Science and Technology.
Identification
Copyright
© 2012 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
