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7 Cards in this Set
- Front
- Back
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what do radionuclides emit for therapeutic and diagnostic purposes
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therapeutic - Beta
diagnostic - Gamma |
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what is Positron Emission Tomography
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radiolabeled tracers administered at a non pharmacologic dose con construct a 3-D image to demonstrate the LOCATION and CONCENTRATION of the tracer of interest
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what is done to incorporate a foreign label
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for example since 99 Tc is an artificial radioactive substance it is chelated into the compound of interest to increase excretion of radioactive material over time
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what happens in isotope exchange
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a radioisotope is substituted for a stable atom of the same element that is already a natural part of the molecule (123 I for stable 127 I)
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how much rem should the public, kids under 18, and pregnant women get
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0.5 rem per year or pregnancy
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how much rem should a occupational worker get
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5 rems per year
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what does radiation dose exposure proportional to
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time in field (more time in field the more exposure)
1/(distance of seperation) 2 (further away less exposure) |
