肝動脈造影における濃度補償フィルタ(横隔膜フィルタ)の検討

概要

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It is important to demonstrate clearly the hepatic arteries, parasitic arteries and small stains in conventional hepatic angiography and lipiodol accumulations after transcatheter arterial embolization with lipiodol. A diaphragmatic compensating filter (DCF) covering the diaphragmatic region was made originally. The shape of DCF for a high density part of the angiogram is similar to the shape of diaphragm, but the shape for a low density part could not be specified. The smallest tolerance of the DCF was 13.2 mm on the film. Therefore, a DCF was effective in more than 95.8% of angiograms. Only one type of DCF is possible to use in combination with side compensating filters. The clinical value of the radiographic images were remarkable improved, more than 29%, by the image analyze system, PIAS LA-500. Therefore, a DCF is indispensable in conventional hepatic angiography.
公益社団法人日本放射線技術学会の論文
1989-12-01