EDAN DUS 60 User Manual page 36

DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
trackball, the system displays dots to outline the structure. To correct
an error in the trace, press Back to move in reverse along the traced
outline. Roll the trackball to move forward again. The system
automatically closes the loop when the last measurement marker is
moved very near to the start point. Or press Set to close the loop. The
system draws a line from the position of the active measurement
marker to the beginning of the loop.
5. Roll the trackball and press Set to begin a new circumference/area
measurement. You can measure a maximum of four groups of data.
The outcome will be displayed in the measurement result window, as
shown below.
6. Press Measure to finish and exit.
Figure 6-6 Trace Circumference/Area Method and the Results
2-Axis volume method
Volume
V= (π/6) × A × B
axis)
Two-axis volume method can be used to perform volume measurement by
calculating only one set of measured data.
Operating Method:
The two-axis volume method is similar to the generic B mode Cir/Area
measurement ellipse method. You can measure a maximum of four groups
of data.
3-Axis method
V= (π/6) × A × B × M,
(A: the length of major axis. B: the length of minor axis. M: the length of
the third axis.)
Three-axis method can be used to perform volume measurement by
calculating two sets of measured data, EA and the length of the third axis.
To complete volume measurement, first measure EA by ellipse method,
and then measure the length of the third axis with the distance
measurement method, and the value of volume will be displayed
automatically.
Trace1
Circ
Area
2
, (A: the length of major axis. B: the length of minor
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Operation DUS 60 Digital Ultrasonic Diagnostic Imaging System User Manual
To measure volume:
In the B mode
1. Obtain a cross-section image and freeze the system.
2. Measure the lengths of the major axis and the minor axis of the cross
section with the ellipse method.
3. Unfreeze the system to acquire a new image (vertical-section image),
and then freeze it.
4. Measure the length of the third axis in the vertical section image with
the distance measurement method. You can measure a maximum of
one group of data. The outcome will be displayed in the measurement
result window.
In the 2B mode or 4B mode
To measure volume:
1. Obtain the cross-section image and the vertical-section image.
2. Measure the length of the major axis and the minor axis of the cross
section with the ellipse method.
3. Roll the trackball to the next image, vertical section image, measure
the length of the third axis with the distance measurement method.
The outcome will be displayed in the measurement result window, as
shown below.
4. Press Measure to finish and exit.
LAxis
SAxis
3rdAxis
Volume
Figure 6-7 3-Axis Volume Method and the Results
3-Axis (LWH) method
V= (π/6) × L × W × H,
(L: the length. W: the width. H: the height.)
Three-axis (LWH) method can be used to perform volume measurement
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Operation