5-6 Image Optimization
Imaging Adjustment
Description
More information can be obtained without moving the probe or changing
the sampling position.
FOV (Field
of View)
1. To change the scan range, tap [FOV] on the touch screen to enter the
FOV range and FOV position adjustment status.
2. Press <Set> to switch between FOV range and FOV position.
3. Rotate the trackball to adjust the FOV position or the FOV range.
When the scan range is adjusted to its widest, the FOV position cannot be
changed.
You can get a much larger field of view when selecting a larger FOV.
The frame rate decreases when using a larger FOV.
B Steer
Use the <Angle/Steer> key on the control panel to adjust the steer angle.
ExFOV
(Extended
FOV)
Tap [ExFOV] on the touch screen to turn the function on/off.
For linear probes, the ExFOV function displays as trapezoid imaging.
For convex probes, the ExFOV function displays as extending the
scanning angle.
Impacts
The FOV position/range is available only for convex and phase probes.
The ExFOV function is available only for linear and convex probes.
The B Steer function is available only for linear probes.
Line Density
Description
The function determines the quality and information of the image.
Operations
Adjust the line density using the [Line Density] item on the touch screen.
There are four levels of line density available: UH, M, H, L.
Effects
The higher the line density, the higher the resolution.
Impacts
The higher the line density, the lower the frame rate.
Dynamic Range
Description
This function is used to adjust the B image resolution to compress or
expand the gray display range. The real-time value displays in the image
parameter area in the top-right corner of the screen.
Operations
Adjust the dynamic range through the [Dyn Ra.] item on the touch screen.
Rotate the knob clockwise to increase the value. Rotate the knob
counterclockwise to decrease the value.
The adjusting range is 30-240dB, in increments of 5dB.
Impacts
The more the dynamic range, the more specific the information and the
lower the contrast with more noise.
