Roche Cedex HiRes - Viewing the Prescan Image

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Software
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1.3.4. Viewing the Prescan Image
During a measurement, a so-called Prescan is carried out before the cells are scanned. The entire fl ow chamber
is scanned in order to identify impurities and bubbles that may infl uence the measurement. The Prescan image
is stored together with the measurement and can be viewed when the Measurement window with results has
been opened for that measurement. If the quality of the chamber condition is not good enough, there will be
no check in the Valid check-box under the Image area, and a note will be placed in the Audit Trail File that dirt
was detected.
The Prescan image for a particular measurement can be accessed via the View Prescan button located in the
Image area of the Measurement window. To open an Image View window containing the Prescan image, do
the following:
1
Click on the View Prescan button in the Image area of the Measurement window.
A part of the Prescan image will appear in the image window.
2
Double-click on the Prescan image; the Image View window containing the full Prescan image will open.
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The Image View with the Prescan image offers the following options:
 Zoom: Image enlargement.
 Brightness and contrast settings.
 Navigating a window 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 a Cell Image Using
the Image View Window”).
Using the Measurement Results Window
Image Area