I work at a hospital. I saw a technician doing a chest x ray the other day. He placed the x ray machine at least 5 feet about the patients chest. Wouldn’t this cause the radiation to scatter? How does it only put the lungs in focus then?
In: Engineering
A chest is very deep. If the X-ray source was very close then the front of the chest could be twice as close to the source as the back of the chest, meaning a higher dosage and also greater magnification on the final X-ray image. If you move the source back then the beam is more parallel by the time it reaches the chest so the magnification is much more constant from front to back, and so is the dose of radiation.
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