GSO ISO 18939:2017
成像材料 医学成像数字硬拷贝 测量持久性的方法

Imaging materials -- Digital hard copy for medical imaging -- Methods of measuring permanence

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标准号

GSO ISO 18939:2017

发布

2017年

发布单位

GSO

当前最新

GSO ISO 18939:2017

 

 

适用范围

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-receiving layer to produce a greyscale image. This International Standard does not cover wet-processed black-and-white films or black-and-white paper. It is not applicable to medical colour images or colour prints created by colour inkjet or dye diffusion thermal transfer (D2T2). Neither does it cover medical greyscale images printed on reflective materials for referral purposes or filmless systems such as picture archiving and communication systems (PACS) in medical imaging. This International Standard requires the arbitrary choice of "illustrative end points" for changes in colour and perceived contrast to depict quantifiable changes due to physical ageing. Extrapolations based on ‘illustrative end points’ do not have any proven diagnostic or clinical relevance due to the lack of corresponding statistically significant scoring by radiologists.

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