NMTCB PET EXAM REVIEW Study
Guide.
Mixed Attentuation - answerMalignant Pulmonary Nodules on CT are characterized by:
Reed-Sternberg Cells - answerHodkin's Lymphoma is separated from other Lymphomas by the
presence of:
Acetylecholinestrearse Inhibitors
N-methyl-D-aspartate receptor antagonist...
Negatrons and Positrons - answer✔Beta particles are electrons that contain _____________ and
____________.
Electron Capture or Positron decay - answer✔Proton rich nuclei decay either by _____________
or ______________ .
1/3
ex: F-18 Max = 635 KeV Mean = 210 KeV - answer✔Mean energy of an ejected positron is
about ___________ of the max energy.
Decrease Resolution - answer✔Longer range of travel for a positron before annihilation will
___________ resolution.
Positron emitted from atom w/ high kin. energy
Slows, combines w/ electron
Forms postironium briefly, spin
Mass is converted to energy, release two 511 KeV photons - answer✔Annihilation Reaction
2 mm
0.25 degree deviation - answer✔Non-colinearity results in blurring effect on clinical PET
scanners of approximately _____ mm and angle of _____ deviation from 180.
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