GE H
EALTHCARE
D
IRECTION
5158821-100, R
EVISION
3
E
X
PLORE
L
OCUS
SP S
ERVICE
G
UIDE
Page 187
9.
Turn off x-rays and remove the X,Y Centring Ball tool.
10. Move stage so that it is 40 mm from the detector.
7.4.5
Calculate Source to Detector Distance
NOTICE
Equipment
Damage
Possible
1.
Mount the Distance tool. Make sure that the
tool covers the height of the detector. Remove
the tool each time you move the stage.
Do not move the stage with the tool in place. If
care is not taken, this procedure can break the
tool, move the stage out of alignment and
damage the detector.
2.
Use the
X-Ray and Motor Controller
to move
the tool toward the detector until it is 0.025"
from the detector.
Movements finer than 1mm will be
required! The X-Ray and Motor Controller
application will accept movements as fine
as 0.1mm.
3.
Turn on the X-Ray Source using the
X-Ray and Motor Controller
. Wait a few minutes for the
X-Ray Source to stabilize.
4.
Capture an image and name it
D1
.
5.
Move the tool back 100mm
TO THE RIGHT
(toward the X-Ray Source).
6.
Capture an image and name it
D2
.
7.
Turn off the X-Ray Source and remove Distance tool from the scanner.
8.
Turn the X-Ray Source back on to keep the Source warm.
9.
Correct and unwarp the D1 image and load it into
MicroView
.
10. Draw an ROI (Region Of Interest) in
MicroView
in the middle of the white area:
-
Position cursor in the white area near the centre and press the
7
key. This draws the top
left corner of the ROI.
-
Move cursor to the right and down and press the
8
key to complete the ROI. A yellow box
represents the ROI.
-
Press small
m
(no caps).
The mean value is displayed in the bottom right corner of the window. Make a note of this
value in the Worksheet.
Summary of Contents for Healthcare eXplore Locus SP
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