Parameter Adjustment About Pw Mode; Pw Mode Image Parameter; Pw Mode Image Optimization - Youkey Q7 Instructions For Use Manual

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.
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
：
CAREFUL
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
Control panel
adjustment
SoftKey adjustment

4.7.2 PW mode image optimization

Frequency
Resume Switching the probe frequency in Doppler mode, the frequency value is displayed in
the image parameter area on the left side of the screen in real time.
Effect The higher the frequency, the higher the resolution and sensitivity, but the lower the
penetration force.
Trace Area
Resume Change the Trace Area between Above, Below and All.
Parameter term
Gain, depth
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
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