DANSK DS/ISO 18939 PDF

This International Standard establishes test methods for measuring the stability of photographic films intended for storage of medical records. It is applicable to greyscale images on films for use in transmission mode that are based on thermally processed materials (photothermography, thermography, microcapsule) or created by inkjet printing. Thermally processed materials have a base of safety polyester [poly (ethylene terephthalate)] and work predominantly with silver behenate salts dispersed in non-gelatinous emulsions or dye based microcapsule emulsions that are thermally processed to produce a black-and-white image. In inkjet printing ink droplets are jetted onto a film with an ink reveiving layer to produce a greyscale image. This International Standard does not cover wet-processed black-and-white films and black-and-white paper. This International Standard does also not apply to medical colour images and colour prints created by colour inkjet or dye diffusion thermal transfer (D2T2). Furthermore, this standard does also not cover medical greyscale images printed on reflective materials for referral purpose. Also excluded are the film-less systems like Picture Archiving and Communication Systems (PACS) in medical imaging. This International Standard requires the arbitrary choice of 'illustrative endpoints' to depict quantifiable changes due to physical ageing. Extrapolations based on 'illustrative endpoints' do not have any proven diagnostic and/or clinical relevance due to the lack of corresponding statistically significant scoring by radiologists.