5-26 Image Optimization
Angle
This function is used to adjust the angle between Doppler vector and flow to
make the velocity more accurate.
The real-time adjusting angle value is displayed on the left part of the spectrum
map.
Adjust through [Angle] on the menu.
Tap [-] or [+] to change the value slightly or drag the control directly.
Quick Angle
To adjust the angle faster, in increments of 60°. The real-time value is displayed
on the left part of the spectrum map.
Tap the three buttons above [Quick Angle] on the bottom of the image area.
Dynamic Range
The dynamic range conveys the information which is being transformed from
echo intensity to grayscale.
Adjust dynamic range through [Dyn Ra.].
Tap [-] or [+] to change the value slightly or drag the control directly.
The more the dynamic range, the more specific the information and the lower the
contrast with more noise.
PW Volume
This function is used to adjust the output audio in the spectrum map.
Adjust through[Volume]on the menu.
Tap [-] or [+] to change the value slightly or drag the control directly.
Utilizing the output audio helps to identify the feature and the status of flow.
PW Steer
This function is used to adjust the angles for the sampling line.
Steer the probe by tapping buttons on the bottom of the image area.
This feature is used to steer the direction of the beam so as to change the angle
between the beam and flow direction with immobility of the linear probe.
The PW Steer function is available only for linear probes.
5.7 Smart B-line
The lung acoustic impedance difference increases with the increase of lung liquids. The ultrasound
waves produce strong reverberations in the lung at different depth. After multiple reflections, the
comet tail sign is formed, which is perpendicular to the pleura plane. Starting from the pleura line,
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