volume 35, issue 4, P489-496 1979
DOI: 10.6009/jjrt.kj00003105262
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Abstract: We report the basic prQblems in some technical problems 。f alimentary tract radiography from a evalua . tion of radiographic irnage quaiity standpoint . We used two ways of evaiuation . One is by physical . objective process . The other is by psychological subjective process 。 Fer the former , we studied every trend celltering around modulation transfer function ( MTF ) which are geometrical factors , content rate of scattered X −rays and primary X −rays . For 出 e latter , through the vision system , we studle…

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