3 ms·
> Likewise with MRI MRI isn't radiation, but is sometimes used with contrast dye. People can be allergic to the dye. For one person this is a small risk. Acros
by DanBC 4y ago
> Likewise with MRI
MRI isn't radiation, but is sometimes used with contrast dye. People can be allergic to the dye. For one person this is a small risk. Across a population we'd be causing harm. We'd balance the risks of harm against the benefits, and so far no-one can find a benefit to routine whole body MRI scans. And if the benefit was there the MRI machine companies probably would have found it by now because it'd massively increase the numbers of machines they could sell.
- robocat 4y agoMRI uses electromagnetic radiation. MRI uses a magnetic field with a radio-frequency pulse and then the protons emit a radio-frequency response - that response location is used to synthetically generate the image. MRI does not use ionising radiation. Nice overview here: https://www.nibib.nih.gov/science-education/science-topics/magnetic-resonance-imaging-mri https://www.nibib.nih.gov/science-education/science-topics/m...
- Broken_Hippo 4y agoYou've misread their reply. MRI's sometimes use contrast dye. I've personally had these sorts of dyes, both on brain and spinal cord scans (I have MS and get these regularly) and for the first scan of my pancreas (non-symptomatic cyst they are watching to be cautious). It isn't radiation. https://www.insideradiology.com.au/gadolinium-contrast-medium/ https://www.insideradiology.com.au/gadolinium-contrast-mediu...