Radiologists are the gatekeeper. We deal with so much radiation, don't think other doctors remembered their training in medical physics (we did have medical physics in premed in RCSI) to remember the dose of CT, fluoroscopy examination. To be honest, my senior couldn't answer a physician on CT radiation dose- well he did answer wrongly, too far off.
Added perspective ...
Approximate effective dose (mSv)
Round-trip flight, New York – London 0.1
Single screening mammogram (breast dose) 3
Background dose due to natural radiation exposure 3 / yr
Dose (over a 70 year period) to 0.5 million individuals in rural Ukraine in the vicinity of the Chernobyl accident 14
Dose range over 20 block radius from hypothetical nuclear terrorism incident [medical gauge containing cesium] 3-30
Pelvis, Chest/Abdomen/Pelvis CT Scan 10, 15
Neonate CT scans 25-65
Radiation worker exposure limit 50 / yr
Exposure on international space station 170 / yr
Acute Radiation Health Effects : Skin Effects
• 2 Gy -- Transient redness, bad erythema at 6 Gy (hrs)
– vasodilation, perhaps vasculature damage
• 3 Gy -- Some hair loss, permanent at 6-7 Gy (3 wks)
• 8-10 Gy -- Dry desquamation (heavy peeling) (3 wks)
– damage to germinal layer
• 15 Gy -- Wet desquamation with fluid exudate (4 wk)
– heavily damaged germinal layer, some stroma degeneration
• 18 Gy -- Necrosis and Ulceration (6 weeks and on)
http://www.crcpd.org/2011AnnualMeeting/Training/2011-05-15%20Martin%20%202011%20CRCPD%20.pdf
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