GE Healthcare eXplore Locus SP, Руководство по обслуживанию

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GE H
EALTHCARE
D
IRECTION
5158821-100, R
EVISION
3
E
X
PLORE
L
OCUS
SP S
ERVICE
G
UIDE
Page 179
7. Place the mouse in the middle of the gray
band that appears to the left of the black
area. Make note of the x coordinate and
round the coordinate to the nearest .5
pixel. Record in Worksheet.
8. Zoom out and move to the right outer most side of the ball. Zoom in on the edge. DO NOT re-
adjust the Window and Level slide bars, which may be recorded in the Worksheet.
9. Place the mouse in the middle of the gray band that appears to the right of the black area.
Make note of the x coordinate in the Worksheet.
10. Add the 2 x values together and then divide by 2. This value is the ball’s geometric centre.
Make note of this value in the Worksheet.
11. Use the X-Ray and Motor Controller’s
Magnification setting to move the ball toward the X-
Ray Source 140mm.
12. Capture the image calling the file capture .
13. Load the corrected and unwarped image into
MicroView .
14. Find the geometric centre of the ball at the X-Ray
Source end by making note of the x values on the
outer most left and right side of the ball and dividing
this value by 2. Make note values in the Worksheet.
Note: This value must eventually equal the ball’s geometric centre at the detector end, plus or minus
1 pixel.
IF NOT , adjust the geometric centre values until they are within 1 pixel of each other as follows:
a. Turn off the X-Ray Source.
b. Loosen the 4 stage retaining bolts.