ch 26 Flashcards
digital fluoroscopy studies began in
1971 at university of Wisconsin and arizona
advantages of digital fluoroscopy
speed, post processing
Tube is operated in
radiographic mode
conventional fluoroscopy uses
< 5 mA
____ fluoroscopy is used in DF
pulse progressive
Shoots ___ images per second
1-10
___ is required to produce a television frame
33ms
xray generators must be able to ____ very quickly
switch on and off
CCD is used instead of
tv camera tube
crystalline silicon converts light to
electrical signal
CCD is mounted on
output phosphor
CCD has ___ sensitivity to light
greater
CCD has ___ contrast resolution and dynamic range
better
CCD has no ___ & ____
distortion, lag
FPIR is used instead of
II Tube
it is ___, ___, and ___ to manipulate
smaller, lighter, easier
uniform spatial resolution and contrast resolution means no
veiling glare
FPIR is unaffected by
external magnetic fields
video system must be used in ___ mode
progressive
Flat panel is easier to view and provides
better images
image matrix size
pixels
system dynamic range
grayscale
image acquisition rate
of images per second
image matrix is layout of cells in
rows & columns
