Protection
Minimum SSD on mobile x-ray units.
12 inches
Designed to convert remnant radiation from the patient to an amplified light image
Image Intensifier tube
minification gain x flux gain =
brightness gain
Blotchy or grainy appearance caused by insufficient radiation or because of video noise
quantum mottle
Provides scatter correction w/out the physical use of a grid.
Virtual grid software
fixed tube targets SOD.
15 inches
the emission of light
photoemission
The measurement of the increase in light photons due to the conversion efficiency of the output screen
flux gain
CCD & CMOS
warped edge appearance at the edge of the image
pincusion
Personal Lead apron thickness.
.5 mm Pb/eq
Area in the tube where the image is reversed
focal point
causes a decrease in image quality
flux gain
Part of the video camera system- similar to ABC and ABS but does not change exposure factors
AGC- automatic gain control
this can decrease 10% each year because of the aging process
brightness gain
Table top exposure limits on fluoro machines.
100 mGy/min
Active component of the input screen
Sodium-activated cesium iodide
the ratio of the output phosphor to the input exposure rate
total brightness gain
In digital fluoro- this is what contacts the image intensifier output anode screen-for electronic readout
TFT
the mA used on fluoroscopic exams
.5-5mA
The acronym ESE stands for ______________.
Absorbs light and emits electrons
Photocathode
results from the same number of electrons at the input screen being compressed into the output screen
minification gain
In digital fluoro- this function is the same as mag mode.
Zoom
Consequence of light scatter from the output screen window
veiling glare