• DaddleDew@lemmy.world
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    2 天前

    Dosage. Patients generally only get one x-ray every few years on average so being exposed is fine. The x-ray tech takes dozens every day so if they were exposed every time they would exceed safe dosage very quickly.

    • Rooskie91@discuss.online
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      2 天前

      Also, they give you a lead garment to protect the areas that aren’t being x-rayed. So the technicians are taking appropriate safety precautions for you as well as themselves.

      Even without that precaution you get more radiation exposure from a long plane ride than from a single x-ray (less atmosphere above you = less shielding from cosmic radiation).

      • krathalan@lemmy.blahaj.zone
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        1 天前

        Employed X-ray tech here, this is mostly accurate, but most relevant academic bodies, in the US at least, actually recommend not shielding patients anymore, since it usually leads to slightly higher doses depending on the particular exam.

        Collimation of the beam is sufficient to reduce dose with modern equipment.

        That being said, when the patient is being X-rayed, such as in surgery, the primary source of radiation for everyone else is the patient. Since that cannot be collimated, lead aprons should be worn, and should be facing the source of radiation (i.e., don’t turn your back when the beam is on, or wear a full wrap lead apron). Even that being said, the amount of radiation is low for almost everything except CT scans and IR (heart cath/embolization etc) cases.

        • BCsven@lemmy.ca
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          1 天前

          It depends on the xray and positions etc. I’ve had it with the lead apron and not

      • Photonic@lemmy.world
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        2 天前

        Lead garments are usually used to protect the doctors and technologists during fluoroscopy or x-ray guided therapy or surgery.

        Collimation is what protects the areas that aren’t x-rayed in a patient.

            • BCsven@lemmy.ca
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              1 天前

              As a patient I have worn them, do they not have them where you go?

              • Photonic@lemmy.world
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                1 天前

                Like I said, collimation is what’s key: if you don’t put other body parts into the beam there is no need to put lead on a patient. Lead garments don’t work for the patient. It only helps to protect others around them from radiation that’s scattered in the patient and coming out at different angles.

                So next time they hand you one, ask them to properly collimate instead.

                • BCsven@lemmy.ca
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                  1 天前

                  They aren’t even in the same room. They have a special walled booth. They’ve given me a vest when having my arm up out on a table. Seems somebody needs better equipment or better training

  • Err(()).unwrap()@lemmy.world
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    2 天前

    Radiation exposure is cumulative. Whether one subscribes to the LNT or hormesis model (yes, I watch Kyle Hill), there is a huge difference between a single chest x-ray and exposure even to the scattered radiation dozens of times a day for months.

  • iatenine@piefed.social
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    2 天前

    Don’t be ridiculous. That’s the technician. The doctor is kilometers away by the time the death ray fires up