Films | 合法醫療器材資訊網

2016年2月20日—Films,cassettes,intensifyingscreensandprocessing·Radiographicfilmiscomposedofafilmbasewithanactiveemulsionlayeradheredusing ...

Single-sided film, with one emulsion layer, may be used when a single intensifying screen is used; for example in mammography where high resolution is imperative and in instances when an image of a light source (laser source, photofluorographic) is required. All films consist of a number of discrete layers.[2]

This is similar in construction to duplitised film; however, the second emulsion layer is replaced with an anti-curl/halo backing ([3]Fig. 12.2[4]). Curl may occur during processing as the emulsion layer absorbs processing chemicals and water and expands to a certain degree. To avoid this a layer of gelatin of identical thickness to the emulsion layer is applied to the non-emulsion aspect of the film. During processing this will expand to the same degree as the emulsion, ensuring that the dry film will lie flat. In single-sided emulsions light can be reflected at the base–air interface, back towards the sensitive em...