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As the title asks, what is the dynamic range on a film-based x-ray? And what are the implications of this for digitally stored x-ray images?

  • drgstoothpix.com/2011/11/02/… - does that help? – Graham Chiu Jan 23 '18 at 9:43
  • @GrahamChiu: that page only talks of spatial resolution, as far as I can tell. – Fizz Jan 23 '18 at 9:45
  • Oh well, pass then. – Graham Chiu Jan 23 '18 at 9:46
  • I don't know enough to answer this in detail, but I know enough about photography and digital images to give it some broad brushes. The dynamic range of film x-ray is fairly narrow -- much narrower than digital x-rays. The only implications for digital storage of film images are that it could take less storage space than digital images. I would imagine that 8 bits per pixel would be sufficient to accurately encode a film x-ray since that's sufficient to encode most black and white photos. However, I wouldn't be surprised to find that they're stored the same as digital images for simplicity. – Carey Gregory Jan 23 '18 at 19:08
  • @CareyGregory I always wondered about increasing the dynamic range of imaging modalities. Specifically, I wondered whether it might be possible—and at all valuable—to combine various CT windows to create a high dynamic range composite that optimised multi-organ visualisation in a single image. It would necessitate mapping multiple densities to a shared grey-level, but application of Graph Theory could ensure these don’t exist adjacent. – CJK Feb 6 '18 at 22:26

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