Nyquist		central processing unit; rated in megaherz (MHz)
interpolation		unwanted signal
Cutoff		used for dynamic aquisitions
binary		one of the first reconstruction technique in Nuclear Medicine
Ramp		method of subtracting counts until desired image is obtained
zoom		the brain of a computer
noise		filter used to rule out low-frequency background
digital		strored images built and stored into the computer for preset lenght of time
ROM		most commonly used back projection
hardware		employs numbers as decimals for information
Hamming		Read Only Memory
memory		filter used to reject high frequency noise
smoothing		each event is recorded by its existence and location
CPU		Random Access Memory; is temporary
frame mode		frequency used to specify bandwidth of a filter
iterative		spatial and temporal filters
spatial filters		all electronic components and gadgetry of a computer
magnetic media		highest frequency
temporal		used on static images to remove statistical fluctuations
matrix		uses two pulses having only two discrete voltages
Background correction		uses ferrous material
filtered back		equals 8 bits
byte		reduces digital raster effect on a static and dynamic image
analog		uses 0 and 1 for codes
RAM		requires magnification
list mode		made up of pixels; e.g. 256 x 256