Career Path > Radiation Safety
Bone density test
peteshonkwiler:
Just had a bone density test, which is actually an X ray. The tech didn't know the dose being given nor any applicable numbers for calculation. Doing a quick Google I found it was probably 50 - 100 μSv, or 5.0-10.0 mrem. This was done with a dual energy QCT unit. I had two done, so the techs estimation of "it's very low" is fairly adequate for medical... maybe not so much for those who think in occupational terms😅 Here's my Google source:
https://radiology.ucsf.edu/patient-care/services/bone-density-scan-dxa-dexa#:~:text=DXA%20is%20painless%20and%20takes,a%20normal%20chest%20X%2Dray.
Marlin:
--- Quote from: fiveeleven on Feb 26, 2025, 07:51 ---Not familiar with the dual energy QCT unit, but somewhat familiar with unit analysis/conversion - 100microsievert =10millirem.
--- End quote ---
Medical technician does not worry about exposure to the patient the risk benefit is pre-determined. They apply the required voltage to get the image the doctor wants.
Marlin:
--- Quote from: fiveeleven on Feb 26, 2025, 08:40 ---As stated - fact check- 1 microsievert= 100 microrem=10mr.
--- End quote ---
True but that has nothing to do with dual energy QCT unit. It produces separate Xray spectrums for a better image result.
Marlin:
We had a similar conversation before on medical exposure. Only the medical technicians receive monitored occupational exposure. The patent has no limit other that the predetermined exposure that will be delivered in his/her best interest.
https://www.nukeworker.com/forum/index.php/topic,49696.0.html
Rennhack:
Where did fiveeleven's posts go?
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