User Manual

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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 Parameter adjustment about PW
mode
PW mode (spectral Doppler mode) is used to provide the information of blood flow direction and
velocity. The transverse axis of the spectrum pattern represents the time and the longitudinal axis
indicates the Doppler frequency shift.
PW mode has the function of distance gating, which can show the velocity, direction and nature of
local blood flow at a certain depth.
CAREFUL
：
The timing of PW mode is not consistent with that of B/C mode, so
it is impossible to move the probe to change the position of
measurement when entering PW mode.
4.7.1 PW mode image parameter
During PW mode image scanning, the image parameter area on the left side of the screen provides
real-time parameter information, which allows you to adjust the following parameters:
Adjustment method Parameter term
Control panel
adjustment
Gain, depth
SoftKey adjustment
Speed, baseline, deflection, quick correction angle, flip, SV, wall
filter, frequency, dynamic range, volume, recording range,
pseudo-color map, sound power, time mark, automatic
calculation,automatic calculation parameters
4.7.2 PW mode image optimization
Gain
Resume Adjusting the output signal size of the spectrum map, the gain value is displayed in
the image parameter area on the left side of the screen in real time.
Effect By increasing the brightness of the gain image, more echo signals can be observed,
but at the same time, there will be more noise.