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22 Cards in this Set
- Front
- Back
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Mantra for interventional Radiology?
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OPEN IT UP
CLOSE IT DOWN LEAVE SOMETHING IN TAKE SOMETHING OUT Our Mantra “UP, DOWN, IN, OUT |
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What % of interventional radiology is therapeutic?
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>90%
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Does interventional radiology do work on lymphatics?
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No.
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LeRiche Syndrome is...
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... intrarenal aortic occulsion
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Possible things radiation exposure can do to an embryo or fetus? (3)
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spontaneous abortion
congenital abnormalities cancer and leukemia |
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Is genetic damage a concern for Radiology diagnostic tests on a one test basis? Sterility? Cancer?
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No, no. Yes.
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3 ways to describe radiation doses:
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1. how much is incident on the patient (exposure) (C/kg)
2. how much is actually absorbed by the patient "absorbed dose" (mGy) 3. Relative amount of biological response (equivalent dose) (mSv) |
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What term is replacing 'exposure' in many cases?
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Air Kerma
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Define "air kerma"... what are it's units?
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absorbed does would be in air from the given exposure... units are milligray (mGy)
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What are some low dose Radiology exams?
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Chest, extremities
<0.01mGv to fetus |
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Moderate dose radiology exams?
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abdomen, lumbar spine, nuclear medicine exam
10mGv to the fetus |
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High dose rad. exams?
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CT, fluoroscopy, interventional procedures
>10mGy to the fetus |
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How much radiation 'background' do we get everyday?
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~0.01 mGy per day
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In which trimester is the fetus/embryo most sensitive to radiation?
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1st trimester
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Three highly sensitive periods during fetal development for radiation damage?
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preimplantation: 0-2 wks
organogenesis: 2-8 wks early fetal development: 9-15 wks |
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In which sensitive period does radiation have an all or nothing effect?
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conception age: spontaneous abortion or no effect at all.
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What is the dangerous dose for organogenesis? What might be considered as Rx?
Early fetal development? Rx? |
>100mGy
Therapeudic termination of preg. 50-150mGy - might not justify early termination |
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Order the following possible complications from most common with 150mGy dose to least: cancer, microcephaly, mental retardation
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microcephaly, mental retardation, cancer
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apart from data, is there some "association" between exposures as low as 10mGy in utero & development of childhood leukemia?
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yes.
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Is the primary source of exposure for healthcare workers from the equipment?
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no, scattered radiation from the patient.
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Registered radiation workers may receive how much radiation a year? Other non-registered?
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50mGy
1mGy |
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Rad. risks to am embryo or fetus depend on what 2 critical factors?
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conception age & total radiation dose
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