35
Adjustment method
Parameter term
Control panel adjustment Gain, depth
SoftKey adjustment
Velocity, Frequency, Color first, dynamic range, atlas, Wall
filter, Sound Power, afterglow
The Power mode shares the probe sound power of the B mode ,When the acoustic
power is adjusted, the sound power of the two imaging modes changes synchronously.
Because the Color mode is superimposed by two-dimensional (B) mode and Doppler
mode, the two kinds of images change synchronously when magnifying or adjusting the
depth.
4.6.2
Power mode image optimization
Because of the same Doppler color imaging, most of the image parameter adjustment
items in Power mode are consistent with Color mode. Therefore,the following is just a
introduction of the image parameters independently adjusted in Power mode.
Gain
Resume
Adjusting the total sensitivity of the blood flow energy signal, the gain value
is displayed in real time in the image parameter area above the screen.
Effect
If the gain is too high, it will amplify the noise; if the gain is too low, it is easy
to lose the blood flow signal
Map
Resume
Color image display effect parameters.
Effect
The energy map provides perfusion information of the image and is sensitive
to low-speed blood flow.
Dynamic range
Resume
Controls how the echo intensity is converted into a color signal.
Effect
After adjusting, it has greater sensitivity to the low energy signal, and
increases the display range of the signal.
Steer
Resume
Used to tilt left and right color blood flow images to obtain more information
without moving the probe.
Effect
Changing the incident direction of the acoustic beam in color mode, thus
changing the angle between the acoustic beam and the direction of blood
flow, is only effective for the linear array probe.
4.7
Parameters adjustment for PW mode
PW mode (spectral Doppler mode) is used to provide the information of blood flow direction
