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We really need more low energy, high resolution portable X-ray systems in all sorts of trades for NDT weld inspections and also for ordinary parts serviceabilit

We really need more low energy, high resolution portable X-ray systems in all sorts of trades for NDT weld inspections and also for ordinary parts serviceability to look for hidden fatigue and cracks. Also, for blacksmiths to determine strength and quality of bespoke objects. Heck, maybe low energy home medical X-ray systems will be a thing too. Note that there's an overuse of high energy CT scans in clinical settings in the US at present.

hammock 1y ago
I tend to agree on the overuse of high energy but will also point out We used to use x-ray machines in shoe stores to measure your foot size…(spoiler it didn’t end well)
- burnt-resistor 1y ago
  Wha?? By contrast, in the US, I've only seen the Brannock Device used for that purpose.
  - hammock 1y ago
    Used in the US and worldwide until the 1970s. https://en.m.wikipedia.org/wiki/Shoe-fitting_fluoroscope# https://en.m.wikipedia.org/wiki/Shoe-fitting_fluoroscope#
habi 1y ago
> low energy, high resolution portable X-ray systems in all sorts of trades for NDT weld inspections > low energy home medical X-ray systems The low energy you desire might not be high enough to penetrate the object you want to image, either a weld to inspect, the blacksmiths bespoke object or the human. For imaging human tissue you want high energy for less radiation dose in the patient. That’s why x-rays are filtered by some mm of aluminum before imaging a patient. These filtered lower energy photons would be absorbed in the patient anyways.
- burnt-resistor 1y ago
  1. Perhaps variable power with unintended backscatter emissions detection would be useful to make it safer and more robust. 2. With more sensitive sensors, the imaging power needed can be reduced. This has been the trend in dental X-ray machines. (Orders of magnitude more power were used in developed film-style apparatus.)

hammock 1y ago

I tend to agree on the overuse of high energy but will also point out We used to use x-ray machines in shoe stores to measure your foot size…(spoiler it didn’t end well)

burnt-resistor 1y ago
Wha?? By contrast, in the US, I've only seen the Brannock Device used for that purpose.
- hammock 1y ago
  Used in the US and worldwide until the 1970s. https://en.m.wikipedia.org/wiki/Shoe-fitting_fluoroscope# https://en.m.wikipedia.org/wiki/Shoe-fitting_fluoroscope#

habi 1y ago

> low energy, high resolution portable X-ray systems in all sorts of trades for NDT weld inspections > low energy home medical X-ray systems The low energy you desire might not be high enough to penetrate the object you want to image, either a weld to inspect, the blacksmiths bespoke object or the human. For imaging human tissue you want high energy for less radiation dose in the patient. That’s why x-rays are filtered by some mm of aluminum before imaging a patient. These filtered lower energy photons would be absorbed in the patient anyways.

burnt-resistor 1y ago
1. Perhaps variable power with unintended backscatter emissions detection would be useful to make it safer and more robust. 2. With more sensitive sensors, the imaging power needed can be reduced. This has been the trend in dental X-ray machines. (Orders of magnitude more power were used in developed film-style apparatus.)