GE Senographe DS Operator's Manual page 104

GE Healthcare
Revision 1
Viewer
2-2 2D Localization
In acquisition mode (with the camera icon
allows you to display and position a set of cross-hairs on the image.
These are used on images acquired using one of the optional 2D localization paddles (graduated 2D
large localization paddle or 2D spot localization paddle) to precisely locate a point of interest on the
image, in order to introduce a needle or to position a marker for a tangential view.
• Click the 2D Localization button to display the cross-hairs on the image.
• Move the mouse pointer onto the intersection of the cross-hairs, then press and hold the left
mouse button. The cursor changes to a pencil shape; move the cross-hairs by moving the
mouse.
Move the cross-hairs exactly over the point of interest; you can now read their position relative to the
graduations of the compression paddle on the image. It may be necessary to first apply a Zoom level
of 1 or 1/2 to view the area displayed, then to reduce the zoom level to see the paddle alpha-numer-
ics for cross-hair location.
• Click the 2D Localization button again to remove the cross-hairs.
Note:
When you close the exam, any 2D Localization cross-hairs on an image will be saved with the im-
age, and will be displayed again when the image is selected for review at a later stage.
On an image that has been saved on the database and is recalled in image review mode, the 2D
Localization cross-hairs can no longer be modified or deleted.
2-3 Contrast and Brightness sliders
To use the sliders for precise adjustment of image contrast and brightness, you can:
• Select the slider cursor (small box inside the slider bar) and drag it left or right as required. The value
above the slider changes accordingly (higher values indicate less contrast or increased brightness)
and the screen displays the change in contrast or brightness.
• Click on the left arrow or right arrow buttons, just below each slider, to change contrast or brightness
by small increments.
• Click inside the slider bar, on the left or on the right of the cursor, to change contrast or brightness by
large increments.
The adjustment only acts on the currently selected image (primary selection, indicated by the large white
dot in the top left corner).
Note:
You can also use the auto windowing selection button (see Image Control, below) or the Multi-Func-
tion mouse button (the middle button) for contrast and brightness control (see section
Mouse button on page
Chapter 11
displayed in the Mosaic area), the 2D Localization function
120).
Page no. 104
Senographe DS Acquisition System
Operator Manual 5307907-3-S-1EN
4-7 Middle
11-viewer.fm