TELEMED
Echo Wave A Software User Manual
Ver. 1.2.1
2020.07.02
Page 16 of 25
7.1.12.
Lines Density
Description
Lines density adjusts the number of ultrasonic beams that are used for scanning ultrasound image.
Use a higher density when you are viewing small objects. A lower density allows you to increase the frame
rate and can be used when viewing fast moving objects (for example the heart).
Adjustment
Click “Lines Density” button and do sweeps on ultrasound image.
7.1.13.
Map
Description
The software allows to select gray/color map that defines how 256 input grayscale values from the
interval [0;255] are transformed to output values. When is used linear map, output values are the same as
input values (that is, no mapping is used).
Values
The software displays indexes of available maps. “1” means linear map.
Adjustment
Click “Color Map” button and do sweeps on ultrasound image. Gamma
7.1.14.
Gamma, Brightness, Contrast
Description
The software allows you to adjust the ultrasound image palette using gamma, brightness and
contrast controls. Gamma adjustment changes the gray scale values of the ultrasound image in a non-linear
manner by raising the normalized values to the power of the chosen gamma value. To make the entire
ultrasound image appear lighter you can increase the brightness value. By increasing the contrast value you
can increase the difference between the image gray scale values and make the ultrasound image appear
sharper.
Adjustment
Click “Palette”, “Gamma”, “Brightness” or “Contrast” button and do sweeps on ultrasound image.
Gamma correction is not used if the level 1 is selected, brightness correction is not used if the level 0 is
selected and contrast correction is not used if the level 0 is selected.
Hints
Before adjusting the ultrasound image Gamma, Brightness or Contrast, it is recommended that you
perform the correct ultrasound image adjustment using the Gain, TGC, Power, and Dynamic Range controls.
