5-24 Image Optimization
Rotate the knob under the [Image Quality] on the touch screen to select the
different frequency values.
The adjusting range of frequency values can be divided into 3 levels, penetration
preferred, (Pen), general mode (Gen), resolution preferred (Res).
Please select the frequency according to the detection depth and current tissue
features.
The higher the frequency, the better the resolution and sensitivity, and the worse
the force of penetration.
Scale
This function is used to adjust the speed range of flow, which is adjusted through
PRF in the system.
The real-time PRF value is displayed in the image parameter area in the upper
right corner of the screen.
Adjust through the <Scale> deflector rod on the control panel.
To provide a much clearer color flow image.
Use low PRF to observe low-velocity flows, and use high PRF to observe high-
velocity flows.
Aliasing may occur if low velocity scale is used and high velocities are
encountered.
Low velocities may not be identified when a high velocity scale is used.
iTouch
To optimize image parameters as per the current tissue characteristics for a better
image effect.
Press <iTouch> on the control panel to turn on the function.
Auto Calculation
This function is used to trace the spectrum and calculate parameters of PW/CW
mode image, and the results of which are displayed in the result window.
Turn on or off the auto calculation function through the [Auto Calc] item on the
touch screen.
Auto
Calculation
Parameter
Select parameters in the dialogue box prompted by touching [Auto Calc Param] on
the touch screen.
To set the number of heart cycle for auto calculation.
Touch [Auto Calc Cycle] on the touch screen to select the cycle number.
In real-time scanning, the results displayed are derived from the calculation of
latest cardiac cycle;
In the freeze and cine status, the results displayed are calculated from the current
selected area.
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