Chison ECO 2 - B Mode General Measurement Methods

ECO 2 Ultrasound Diagnostic System
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group of measurement automatically.
6.2.4 Histogram
Histogram is used to calculate the gray distribution of the ultrasound echo signals within a
specified area. Use the rectangle, ellipse or trace method to draw along the desired measurement
area. The result is shown in the form of histogram.
Histogram can be measured only on the frozen image.
◆ Measurement steps by rectangular method:
1. Press [Calc] to enter into measurement, press [Change] to switch measurement menu to
[General] measurement.
2. Press [ENTER] on [Histogram] menu to enter into measurement status.
3. Press [ENTER] to fix one apex of the rectangle.
4. Move the trackball to change the cursor position and fix the diagonal point of the rectangle
5. Move the trackball to change the cursor position, fix the diagonal point of the rectangle, and
press [ENTER] again to confirm the measurement area. The result will display on the
measurement result area.
◆ Measure the histogram by ellipse or trace method: The method is the same as that to measure
ellipse or trace method, press [UPDATE] to change the measurement between ellipse and trace.
The horizontal axis represents the gray scale of the image ranging from 0 to 255.
The vertical axis represents the distribution ratio of each gray scale. The value shown on the top of
vertical axis represents the percentage of the maximally distributed gray in the whole gray
distribution.
6.2.5 Cross-section Diagram
Cross-section Diagram is used to measure the gray distribution of the ultrasound signals in the
vertical or horizontal direction on a certain profile (section).
This measurement is only available in the frozen mode.
Measurement steps:
1. Press [Calc] to enter into measurement, press [Change] to switch measurement menu to
[General] measurement.
2. Press [ENTER] on [Profile] menu to enter into measurement status.
3. Draw a straight line at the measuring position. The method is the same as that to measure
distance.
4. The calculated result of the profile will be displayed at the center of the screen.
1-The horizontal (or vertical) axis represents the projection of the profile line on the horizontal
direction.