5-26 Image Optimization
Impacts 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
Description To optimize image parameters as per the current tissue characteristics for a better
image effect.
Operation Complete the image optimization via <iTouch>.
Auto-Calculation
Description This function is used to trace the spectrum and calculate the PW/CW mode image
parameters. The results are displayed in the results window.
Tap [Auto Calc] on the touch screen to turn the auto calculation function on or off.
Calculation
Parameter
Tap [Auto Calc Param] on the Auto Calculation page.
Auto
Calculation
Cycle
To set the heart cycle number for auto-calculation.
Tap [Auto Cycle] on the touch screen to select the cycle number.
Auto Calc
Loop
Freeze the image, turn the knob under [Auto Calc Loop] on the touch screen.
Rotate the knob clockwise to select the next loop.
Rotate the knob anticlockwise to select the last loop.
Trace Area To set the trace area of the Doppler wave in the spectrum map, applicable for auto
calculation, V Max and V Mean display.
To change the trace area, adjust through [Trace Area] item on the touch screen.
The available selections of trace area are: Above, Below, All.
To set the smooth level when tracing.
To change the trace area, adjust through [Smooth] item on the touch screen.
The bigger the value, the higher the smooth processing.
Trace
Sensitivity
This function is used to set the sensitivity of tracing in the spectrum.
To change the trace area, adjust through [Sensitivity] item on the touch screen.
The bigger the value the higher the sensitivity.
Operations In real-time scanning, the results displayed are derived from the calculation of the
latest cardiac cycle.
In the freeze and cine status, the results displayed are calculated from the current
selected area.
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