胸部撮影法の検討 : 第4報 grid濃度斑について

概要

論文の詳細を見る
Relatively high voltage has been used to widen the examination area of chest photograph. In the Lysholm-Blende, which has been used for removing scattering rays, the image of the grid prevents reading and irregular image of the grid often makes density spots. The author made comperative study of density spots and made experiments of the removing the density spots. The conclusion obtained from these experiments are as follows : 1) It is necessary to make a distintion in regulation between the travelling grid and ordinary one. 2) The travelling grid is allowed to be used even though the density spots becomes tolerably dim. 3) The grid of foreign make has been said not to be good, because it makes many density spots. But it takes many advantages over the grid of home make, if the using method is distinguished from that of home-made grid. The foreign made grid is high density and it is desired that such a gird will be made also in our country as soon as possible.
公益社団法人日本放射線技術学会の論文
1965-11-30