GE Healthcare eXplore Locus SP, Service Manual

Page: 264 / 266

GE H
EALTHCARE
D
IRECTION
5158821-100, R
EVISION
3
E
X
PLORE
L
OCUS
SP S
ERVICE
G
UIDE
Page 264
99.1.4 Abridged Calibration Worksheets
TOPIC 7.5.1 CENTRE THE STAGE:
TOPIC 7.5.2 PERFORM VERIFICATION SCANS FOR 1X1 MODE:
Parameter Description Parameter Value
Window= Level=
Left side of ball X axis (toward detector) L=
Right side of ball X axis (toward detector) R=
Geometric center of ball X axis (toward detector) (L+R)/2=
Left side of ball X axis (toward source) L=
Right side of ball X axis (toward source) R=
Geometric center of ball X axis (toward source) (L+R)/2=
Center Of Rotation
Parameter Description Parameter Value
Line angle
Existing air calibration value
Existing water calibration value
Existing HU calibration value
Ideal Center of Rotation at Central Slice
VERIFY CENTER OF ROTATION AT EACH END
- end Center Of Rotation (adjusted)
+ end Center Of Rotation (adjusted)
MEASURE THE WIRES AT CENTRAL SLICE
Mean value of plastic (WIRE # 1) M=
Value at top of peak T=
Full Width Half Maximum Value (M+T)/2=
Line length in pixels
ABRIDGED CALIBRATION WORKSHEET