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dsnr | 4 months ago

> That's why we don't give MRI's out the wazoo

Why? What are the risks of MRIs without contrast?

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jijijijij|4 months ago

The biggest risk is false findings for a lot of diagnostic procedures. A false finding may cause enormous psychological stress, but more importantly it usually causes further, more invasive testing, which may pose much higher risks than the original procedure did. It's real statistical risk, which individual patients emotionally often can't relate to. Eg. an MRI shows clear signs of a tumor, you consequently get an endoscopic biopsy through your stomach, or colon, and then happen to die from anesthesia, intestinal perforation, sepsis... The "tumor" turned out to be a cryptic but harmless extra intestinal loop. Sounds made up, but this sort of thing happens enough to make unnecessary diagnostic procedures more harmful than beneficial.

However, I do think the reason MRI aren't used more often is because they are fucking expensive to operate. They need to run more or less 24/7 to be economical, which means they are commonly not scheduled with slack for "optional" investigations.

yread|4 months ago

Or biopsy goes fine, turns benign but something malignant grows from the scar tissue from the biopsy

bonsai_spool|4 months ago

MRIs involve very powerful magnets and inattention around them has led to several widely-publicized deaths.

They’re also loud and can give patients a sense of claustrophobia or panic.

nojs|4 months ago

The reason is cost and availability, not risk.

array_key_first|4 months ago

Incorrect, there is risk associated with performing MRIs without chief complaints.

These types of MRIs often cause anxiety and can lead to riskier medical procedures that are not necessary. This is because imaging is actually not perfect. There is always a risk you see something there that is not a big deal, or that you misinterpret the image. That potentially means unnecessary surgery or medicine. That can kill you.

That's why if you go to any doctor in the US and say "I want an MRI, no, nothing is currently wrong with me" they won't do it.