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15 Cards in this Set
- Front
- Back
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a unit of light energy
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photon
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protons or neutrons in the nucleous
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nucleon
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isotopes of either the same or different elements
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nuclide
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radioactive isotope
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radionuclide
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the nucleus of a helium atom emitted by a radioactive substance
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alpha‐particle
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an electron emitted from the nucleus of a radioactive substance
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beta‐particle
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properties of an electron but have a positive charge
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positron
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high energy photons
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gamma ray
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nuclear process in which a nuclide is transformed into a new element either spontaneously or artificially
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transmutation
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the loss of radioactivity when a radioactive element emits nuclear radiation
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radioactive decay
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the time required for a substance to lose one-half of its physical or chemical activity
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half‐life
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species such as -OH with an unpaired electron
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free radical,
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(computer assisted tomography)
short bursts of X-rays are directed towards some part of the body |
CAT scan
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(magnetic resonance imaging)
the body is placed in a field of a strong electromagnetic and simultaneously exposed to a radio frequency field |
MRI
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(positron emission tomography)
a solution of positron-emitting isotope is injected into the body and produced gama radiation that is detected outside the body by arrays of detectors similar to those used in xray tomography (CAT scan) |
PET scan
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