Module 5: Part 3 (33 - 47) Flashcards
T/F
Most beginners use too low gain
False
Most beginners use too HIGH gain
High gain can obscure
results
if gain is too high then image is
too light
if gain is too low then Image is
too dark
appropriate gain for image optimization
Just right!
The greater depth, the less the ____. Some experts suggest to start with a higher depth and then _____ the depth to put the area of interest at ¾ the size of the screen.
Resolution
decrease
Gain compensation controls
Adjust gain in specific areas of the image (near-mid-far)
TGC = DGC = STC
TGC - time gain compensation control
DGC - distance gain compensation control
STC - spatial time compensation
User can place a “___ _____” on a portion of a frozen image to enlarge that portion of the image
zoom box
“___ _____” improves image quality
Write-zoom
“____ _____” affects only the magnification
Read- zoom
___ ____ tells ultrasound the depth at which you would like the highest resolution
Focal position
As you move ____ position up and down you will see a triangle or dot moving up or down left or right side of the image
focal
Image resolution will improve in the area of selected ___ position
focal
Adjust focus to the level of the
point of interest
Focal zone is the best ___ resolution
lateral
If you decrease ____ ______, you will increase the contrast and see more black and white areas
Dynamic range
High __ ___ = low contrast
dynamic range
Tissue echogenicity
