GE Healthcare eXplore Locus SP, Руководство по обслуживанию

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Once the y axis equals the value at the Central Slice (within 2 pixels):
7. Rotate the tool 180° and capture, correct, unwarp and view the image in MicroView . The value
of this y axis must be within 2 pixels of the previous value before rotation (i.e. the value
determined in step 6). For example, if the previous y axis was 1428, this y axis may have a
value between 1426 and 1430. Also, the x value must be within 5 pixels of each other.
If not within 2 pixels, verify the Central Slice position before making any adjustments, as
follows.
Verify the Central Slice position:
- rotate the tool back 180 degrees
- move the stage 140mm toward the detector
- capture an image, correct and unwarp it
- load the image into MicroView and check that the y position is the same within 2 pixels.
If the y position is not at the Central Slice at the detector end, the Central Slice
calculation will need to be redone.
Verify all values before redoing the Central Slice calculation.
If the y axis at 180° is not within 2 pixels of the previous value (determined in step 6) AND the
Central Slice calculation has been verified, do the following:
- Move the stage back 140mm toward the Source
- Mechanically adjust the stage using the stage levelling screws (capturing, correcting,
unwarping and viewing an image after each adjustment). Move the stage to the centre
(70 mm toward the detector) in order to mechanically adjust the stage.
The 4 stage levelling screws sit in slanted, slotted holes (see diagram on the left) so,
when loosened, allow for movement in the direction shown below.
Note: You may need to tighten or loosen the locking screw at the top of the bracket
in order to get the stage aligned (see red circle in the left diagram).