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Software
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4.3.4. Viewing the Prescan Image
During a measurement, a so-called Prescan is carried out before the cells are scanned. The entire flow chamber
is scanned to identify impurities and bubbles that may influence the measurement. The Prescan image is stored
together with the measurement and can be viewed when the Measurement dialog box with results has been
opened for that measurement. If the quality of the chamber condition is not considered satisfactory by the Soft-
ware, there will be no check in the Valid checkbox under the Sample Parameters area, and a note will be placed
in the Audit Trail File that dirt was detected.
Even if there is no check in the Valid checkbox, measurement results will still be provided by the Software. The
user checks the Prescan image to determine whether or not the measurement results may have been affected by
impurities or bubbles. The Prescan image for a particular measurement can be accessed via the VIEW PRESCAN
button located in the Image area of the Measurement dialog box. To open an Image View dialog box containing
the Prescan image, do the following:
1
Click on the VIEW PRESCAN button in the Image area of the Measurement dialog box.
A part of the Prescan image will appear in the Image dialog box.
2
Double-click on the Prescan image; the Image View dialog box containing the full Prescan image will open.
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The Image View with the Prescan image offers the following options:
c Zoom: Image enlargement.
c
Brightness and contrast settings.
c Navigating through a dialog box when the image is enlarged (scroll bars appear at the bottom and right edge
of the image when the image is zoomed in).
In addition, areas of the image can be enlarged or returned to the original size (see “Viewing an Image Using the
Image View Dialog Box”).
Results Displayed in the Measurement Dialog Box
Image Area
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