NF C74-221*NF EN 61262-1:1994 Medical electrical equipment. Characteristics of electro-optical X-ray image intensifiers. Part 1 : determination of the entrance field size.
1994NF C74-221*NF EN 61262-1:1994 Medical electrical equipment. Characteristics of electro-optical X-ray image intensifiers. Part 1 : determination of the entrance field size.