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"Even today, X-ray film is highly sensitive [to radiation] (much more so than regular photographic film)" In fact, that's actually been used as a feature in mo
by jhbadger 8y ago
"Even today, X-ray film is highly sensitive [to radiation] (much more so than regular photographic film)"
In fact, that's actually been used as a feature in molecular biology. Traditionally many visualizations in biology were done by labeling molecules of interest with radioisotopes and having these form images on x-ray film. This is still done in some cases, but is being mostly replaced with fluorescent labeling.
- danaliv 8y agoI had radiation therapy a while ago and they were able to take X-rays just by holding a piece of film behind my back. Freaky!
- lostlogin 8y agoThat was done? That ray is vastly more powerful than diagnostic doses and is generally targeting at a small area. Diagnostic doses had their strength magnified by using fluorescent plates which produce multiple visible light photons from a single X-ray photon, which in turn exposes the film. ‘Had’ because it’s usually a digital process now.
- ars 8y agoWas there some kind of shutter? Because otherwise wouldn't it be very blurry?
- danaliv 8y agoThis was done during treatment so the "shutter" was the LINAC itself.
- iguy 8y agoDo you know why? Were they just confirming that you hadn't wriggled & they got the right spot?
- gpderetta 8y agoA collimator [1] was probably in front of the film. [1] https://en.m.wikipedia.org/wiki/Collimator https://en.m.wikipedia.org/wiki/Collimator