
5-15
Chapter 5 Measurements and Calculations
Circumference and Area Measurement
Ellipse
This is a basic measurement that is available in all diagnosis modes. You can measure the circumference
and area of a circular (elliptical) object in a 2D image.
1. Select the Soft Menu [2] Ellipse. “Ellipse” is displayed in the user information area.
2. Use the Trackball and the Set button on the control panel to specify the diameter (axis) of the
measurement area.
▶
Place the cursor at a desired position with the Trackball, and press the Set button.
Tips!
Repositioning Point
Pressing the Change button before pressing the Set button to complete positioning resets the
position of a point just set.
3. Specify the size of the circle (ellipse).
▶
Adjust the size using the Trackball, and press the Set button.
4. When the measurement is nished, its result is shown on the screen.
The equations used for ellipse measurement are as follows:
, (A: Long axis, B: Short axis)
Area
= ,
(a, b: Axis)
Trace
This is a basic measurement that is available in all diagnosis modes. You can measure the circumference
and area of an irregular object in a 2D image.
1. Select the Soft Menu [2] Trace. “Trace” is displayed in the user information area.
2. Use the Trackball and the Set button on the control panel to specify the start point for tracing over
the contour of the measurement area.
▶
Place the cursor at a desired position with the Trackball, and press the Set button.
3. Trace the curve so that the measurement cursor returns to the start point, and then press the Set
button.
I want to learn how to do angle correction on PW Doppler on my machine.
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