PETigree
This a quality of an ideal for a PET crystal
What is a high density, atomic number, and light yield. And short light decay time.
BGO, LSO, LYSO, GSO
The ratio of scatter events to trues
What is 50:50
These 3 particles make up a atom
What are Protons, Neutrons, and Electrons
This is applied around an energy peak to eliminate random error in counting
What is a window
The frequency of intrinsic floods at ASLMC
What is weekly and monthly
This term describes the measures taken to reduce random events in 3D camera systems
What is electronic collimation?
(Narrow coincidence timing window, improved reconstruction)
Length of time for a PET normalization scan
With most of an atom being empty space, most of the mass is concentrated in this location
What is the Nucleus
This is the recommended limit of counts for any nuclear medicine study
What is 10,000 counts
The clinical benefit of accurate spatial linearity
What is accurate portrayal of true organ shape
Phosphorylation does what to F18-FDG?
What is trapping it within the cell
Using a phantom with a known amount of tracer absolute activity calibration calculates what value?
Activity per Voxel
Changing this number will cause a shift in the elements
What is Z-Number
Due to the technology of counting systems energy spectrums are displayed as these types of graphs
What is a Poison or Gaussian distribution
Poor spatial resolution has this effect on diagnostic images
What is the inability to detect small defects in the image
(Res Check)
This value derived from quality control best describes the performance of a PET camera
What is Noise-Equivalent-Count-Ratio
This calculation can be used to calculate a SUV
Activity Concentration / Dose Injected / Patient Body Weight
An electron filling this shell will produce the highest energy characteristic X-ray
What is the K-Shell
This graph turns a TA curve linear. Allowing for the calculation of T1/2 via the slope
What is a semilog graph
What is two point sources
What are a delayed coincidence timing window and singles.
List two factors that affect the rate of scatter events
Distrobution of tracer, size and density of patient, location in reference to detector
These two factors contribute to the stability of atom's
What are the proton-to-neutron ratio & nuclear binding energy
This error is marked by measured events falling outside of 1 calculated standard deviation.
(Prompting a Chi-Squared test)
What is a systematic error
This process is done to normalize frames or areas
What is multiplying by a correction factor to match the intensity of comparing frame or area