7.DSA画像の画質改善について(I.Digital Subtraction Angiographyの臨床利用について)(第12回放射線技術)

概要

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It is relatively recent that Digital Subtraction Angiography (DSA) is widely used. At present in most DSA equipments, the images from I.I. and TV systems are processed and recorded to the VTR or VDR first, and then re-processed to monitor-TV or film by Multi Format Camera (MFC). During this processing stage, the spatial and contrast resolution might be caused for example to clarify the peripheral small vasculatures. In addition, it might be difficult to re-construct the clear image on film due to the problems of the Automatic Exposure Circuit in MFC. In this study, Digital Multi Memory was used to keep the image resolution, and the contrast of film was improved by developing new automatic exposure circuit.
公益社団法人日本放射線技術学会の論文
1985-03-01