Image Optimization 5-29
PW Steer
Description
This function is used to adjust the scan angle of linear probes, so as to
change the angle between the transmitting beam and flow direction.
Operation Adjust through the [PW Steer] item in the soft menu or menu.
Values of steering angles vary by probes.
Effects 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.
Post Process
Description
Post process is used to apply modifications to the image in order to
optimize overall image quality. Post process function includes 3
parameters : curve, gray rejection and γ.
Gray
Rejection
This function is to reject image signals less than a certain gray scale.
Click [Gray Rejection] in the soft menu or menu to adjust.
Curve To manually enhance or restrain the signal in the certain scale.
Click [Curve] in the soft menu or menu to open the dialogue box to adjust.
Drag the curve node to increase or decrease the gray scale information:
drag the node up to increase the information and down to decrease.
γ The γ correction is used to correct non-linear distortion of images.
Click [γ] in the soft menu or menu to adjust.
Impacts The post process adjustment will not influence the cine review.
SV
Description
To adjust the SV position and size of sampling in PW mode, the real-time
value of SV and SVD are displayed in the image parameter area in the
upper left corner of the screen.
Operation Adjust the SV size through the [SV] item in the soft menu or menu.
Roll the trackball to adjust the SV depth.
Or adjust the SV directly in the image parameter area.
Effects The smaller the SV size, the more accurate the result; and more
information can be obtained when selected large SV size.
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