[Portal films and daylight film developing].

Automatic daylight film handling systems in radiotherapeutic departments are useful to process simulation films. Plastic film cassettes with two polished stainless steel screens (2 mm at the front and 0.5 mm at the back) instead of the fluorescent intensifying screens are used. Regular diagnostic films are exposed with five monitor units. Loading and unloading of the cassettes are performed automatically. Exposed films are rapidly available with sufficient quality.