Film response research attribution

C. J. Martin. Optimisation in general radiography.
Biomedical Imaging and Intervention Journal 3(2) (2007), e18.
https://doi.org/10.2349/biij.3.2.e18
Copyright 2007 Biomedical Imaging and Intervention Journal.
The article grants unrestricted use under the Creative Commons Attribution
License provided the original work is cited. Its general screen-film sections
are used as a scientific reference; no tables, figures or fitted data are copied.

XYRA implements its own smooth density / transmission approximation with generic
parameters and an added automatic anatomy display mapping. The speed-400
reference is 2.5 uGy for net optical density 1. The display is an educational
presentation, not a validated reproduction of a particular film product.
Dental scans and dental-film measurements are not calibration references.
The author and publisher do not endorse XYRA.