Okano T, Kikuchi A
Department of Dental Radiology, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
Aichi Gakuin Daigaku Shigakkai Shi. 1990 Mar;28(1 Pt 1):195-202.
Characteristic comparisons were made on various medical and dental X-ray films such as Agfa-Gevart, Dupont, Hanshin, Kodak, Konica, Nix, Sun Dental film. 1) Silver grains coated on the film base of regular and dental films showed a round (polyhedron) or potato-like shape. Grains of orthochromatic films were hexagonal or triangular in shape, although those of Konica orthochromatic films were small and round. 2) Size of silver grains ranged from 1.09 microns in the Fuji HRS film to 2.09 microns in the Konica film. 3) Thickness of the film base was the same (170 microns) in all types of film. 4) Thickness of the emulsion layer was 7 microns for non-screen type film, whereas that in the screen type was 4 microns to 8 microns. 5) Size of the silver grain of Kodak Ekta speed was large, and the thickness of the emulsion of this film was thin when compared to others. 6) In screen type films, the silver grains were only sparsely coated. In the non-screen type, however, a large number of silver grains were coated compactly on the film base. 7) Kodak TMG (T-mat) showed flattened silver grains which were piled up on the film layer.
对各种医学和牙科X射线胶片进行了特性比较，如爱克发 - 吉华、杜邦、阪神、柯达、柯尼卡、尼克斯、太阳牙科胶片。1）普通胶片和牙科胶片片基上涂布的银颗粒呈圆形（多面体）或土豆状。正色胶片的颗粒形状为六边形或三角形，不过柯尼卡正色胶片的颗粒小且呈圆形。2）银颗粒尺寸范围从富士HRS胶片的1.09微米到柯尼卡胶片的2.09微米。3）所有类型胶片的片基厚度相同（170微米）。4）非增感屏型胶片的乳剂层厚度为7微米，而增感屏型胶片的乳剂层厚度为4微米至8微米。5）柯达爱克泰速度胶片的银颗粒尺寸较大，与其他胶片相比，该胶片的乳剂层较薄。6）在增感屏型胶片中，银颗粒涂布稀疏。然而，在非增感屏型胶片中，大量银颗粒紧密涂布在片基上。7）柯达TMG（T型底片）显示扁平的银颗粒堆积在胶片层上。
