GE HEALTHCARE PROPRIETARY TO GE
D
IRECTION 5394227, 12 LOGIQ S8/LOGIQ E8 SERVICE MANUAL
4 - 26 Section 4-4 - Functional Checks
4.) Use the trackball to position the cursor over the required area of the image.
4-4-7-2 Checks
These Image Controls are used to optimize the M mode image. Verify that all the listed controls are
working as intended:
- Check Horizontal sweep to optimize the display resolution.
- Check Gain and TGC controls to adjust the range to be imaged.
- Use the Frequency (move to higher frequencies) or the Frame rate control (move to lower
frame rate) to increase resolution in image.
- Use the Frequency (move to lower frequency) to increase penetration.
- Check Focus to move the focal point(s) around the region of interest in the M-Mode display.
- Check Dynamic range to optimize the useful range of incoming echoes to the available grey
scale.
- Check Compress and Edge Enhance to further optimize the display.
- Check Reject to reduce noise while taking care not to eliminate significant low-level diagnostic
information.
Figure 4-21 M-mode Screen Example
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