Ratio A1/A2
10.2.3 Generic Volume Measurements
Note
Ellipse
Ellipse 1Dist
Note
1 Dist.
3 Dist.
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4
3.
Position the second point of the long axis and press
4.
Adjust the length of the short axis with the trackball and fix it with
5.
Repeat steps 1-4 to create another area. The stenosis area is calculated and displayed
automatically.
To calculate the ratio between two areas:
1.
Select
Ratio A1/A2 .
2.
Measure the first and second area as described above. The ratio is calculated
automatically.
To re-adjust a previously set measure point, press the upper trackball key (Change) before
completing a measurement. This will alternate the control from one cursor to the other. This
applies to all measurements listed below.
To measure the volume of an ellipse:
Ellipse . The measurement cursor appears.
1.
Select
2.
Position the first point of the long axis of the ellipse with the trackball and fix it with
3.
Position the second point of the long axis of the ellipse with the trackball and press
4.
Adjust the length of the short axis with the trackball and fix it with
long axis, D2: short axis, VOL: Volume) is displayed.
To measure the volume of an ellipse with the help of a distance:
Ellipse 1Dist . The measurement cursor appears.
1.
Select
2.
Position the starting point with the trackball and fix it with
3.
Position the second point with the trackball and fix it with
two points appears.
4.
Adjust the width of the ellipse if necessary and press Set. the result is displayed.
If using single image mode, make the first measurement, eclipse. Then, press Freeze to return
to scan mode and scan the second image. Press Freeze again for the new cursor to appear
and perform step 5 on the second image.
5.
Perform the measurement of the distance. The volume (D1: long axis, D2:shor axis,
D3:distance, Vol:Volume) is displayed.
To measure a volume based on a single distance:
1Dist . The measurement cursor appears.
1.
Select
2.
Position the starting point of the line with the trackball and press
3.
Position the end point of the line with the trackball and
To measure a volume based on three distances:
3 Dist . The measurement cursor appears.
1.
Select
Measurements and Calculations
Set .
Set .
Set . The volume (D1:
Set .
Set . An ellipse defined by these
Set .
Set . The volume is displayed.
Set .
Set .
10-7
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