10.2.2 Generic Area Measurements
Note
To re-adjust a previously set measure point, press the upper trackball key (Change/Undo)
before completing a measurement. This will alternate the control from one cursor to the other
(Change) or clear the last trace movement (Undo). This applies to all measurements listed
below.
Ellipse
To measure the area of an ellipse:
1.
Select
Ellipse
. The measurement cursor appears.
2.
Position the first point of the long axis with the trackball and press
Set
.
3.
Position the second point of the long axis and press
Set
.
4.
Adjust the length of the short axis with the trackball and fix it with
Set
.
Area Trace
This tool measures the area inside a traced boundary. The boundary is traced when the cursor
is moved over the boundary and displayed with a dotted line.
To measure the area trace:
1.
Select
Area Trace
. The measurement cursor appears.
2.
Position the starting point with the trackball and fix it with
Set
.
3.
Trace the area boundary, which is displayed with a dotted line.
4.
To finish the measurement press
Set
. The perimeter (Circumference) between the
starting point and the final cursor position(C) and the area(A) is calculated and displayed.
Area Point
This tool measures the area inside a traced boundary. The boundary is entered with single
points with a linear interpolation in between. The boundary is displayed with a dotted line.
To measure the area point:
1.
Select
Area Point
. The measurement cursor appears.
2.
Position point after point to form linear lines that surround the area of measurement with
the trackball and enter each by pressing
Set
.
3.
To finish the measurement double press
Set
at the last point.
Area 2Dist.
To measure the area of an ellipse defined by two distances:
1.
Select
Area 2Dist
. The measurement cursor appears.
2.
Position the cursor on the perimeter of the shape to be measured and press
Set
. A
second cursor appears.
3.
Move the second cursor along the longest distance of the object and press
Set
again to
define the long axis of the eclipse.
4.
Position the second cursor perpendicular to the first distance at the border of the object
to define the second axis and press
Set
to finish.
Stenosis % Area
To calculate the stenosis ratio between two areas:
1.
Select
Stenosis%Area
. The measurement cursor appears.
2.
Position the first point of the long axis with the trackball and press
Set
.
Measurements and Calculations
10-6
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4
Содержание Voluson Swift
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