Hologic QDR 4500 Technical Manual page 5

Interface Connections......................................................................................................................................2-31
POWER MODULE .................................................................................................................................................2-32
SECTION 3 INSTALLATION.......................................................................................................3-1
REQUIRED TOOLS..................................................................................................................................................3-1
REQUIRED DOCUMENTATION............................................................................................................................3-1
ROOM AND DOORWAY SIZE ...............................................................................................................................3-2
ARRANGE FOR HELP.............................................................................................................................................3-4
INSPECT FOR VISIBLE SHIPPING DAMAGE .....................................................................................................3-4
UNCRATE UNIT ......................................................................................................................................................3-5
INSPECT FOR HIDDEN SHIPPING DAMAGE .....................................................................................................3-6
TAKE INVENTORY.................................................................................................................................................3-6
MEASURE PATH TO FINAL DESTINATION .......................................................................................................3-6
Short Doorway.......................................................................................................................................................3-6
Narrow Hallway.....................................................................................................................................................3-7
REMOVE TABLE TOP (IF NECESSARY) .............................................................................................................3-7
REMOVE QDR 4500A, OR SL, C-ARM (IF NECESSARY) ..................................................................................3-8
PREPARING THE TABLE TOP FOR MOVING (SL only) ..................................................................................3-10
MOVE UNIT TO DESTINATION (VERTICAL POSITION)................................................................................3-10
MOVE UNIT TO DESTINATION (HORIZONTAL POSITION)..........................................................................3-11
SET UP UNIT..........................................................................................................................................................3-13
INSTALL QDR 4500A, OR QDR 4500SL, UPPER C-ARM .................................................................................3-15
INSTALL QDR 4500W, OR QDR 4500C, C-ARM................................................................................................3-16
INSTALL COMPUTER ..........................................................................................................................................3-17
INSTALL CABLES.................................................................................................................................................3-17
SAFETY PRECAUTIONS ......................................................................................................................................3-18
CHECK POWER LINE VOLTAGE........................................................................................................................3-18
Measure Line Voltage .........................................................................................................................................3-18
Measure Isolation Transformer Secondary Voltage.............................................................................................3-18
CHECK TUBE KV PEAK POTENTIAL................................................................................................................3-19
CHECK TUBE CURRENT .....................................................................................................................................3-21
CHECK BELT TENSION .......................................................................................................................................3-23
ADJUST C-ARM Y BELT ......................................................................................................................................3-23
CALIBRATE MOTORS..........................................................................................................................................3-23
CHECK X-RAY BEAM ALIGNMENT..................................................................................................................3-23
CALIBRATE APERTURE (QDR 4500A AND SL) ...............................................................................................3-23
CHECK LASER POSITIONING OFFSET .............................................................................................................3-24
ADJUST A/D GAIN CONTROL.............................................................................................................................3-24
PERFORM BEAM FLATTENING.........................................................................................................................3-24
PERFORM LATERAL ALIGNMENT TEST .........................................................................................................3-24
MEASURE X-RAY DOSE TO PATIENT..............................................................................................................3-24
CHECK HVPS/S (TANK) FOR RADIATION LEAKAGE ....................................................................................3-25
CALIBRATE FOR AREA, BMD AND BMC.........................................................................................................3-26
TEST SCAN MODES .............................................................................................................................................3-26
FINISH ASSEMBLING UNIT................................................................................................................................3-26
MEASURE X-RAY SCATTER FROM PHANTOM..............................................................................................3-27
PERFORM QC ........................................................................................................................................................3-27
RUN REPRODUCIBILITY TEST ..........................................................................................................................3-27
THE RADIATION MEASUREMENT REPORT....................................................................................................3-29
SECTION 4 ALIGNMENT AND CALIBRATION .........................................................................4-1
TABLE ALIGNMENT ..............................................................................................................................................4-1
Checking Table Alignment....................................................................................................................................4-1
Aligning Table.......................................................................................................................................................4-1
Table Edge to T-Rail ("A" Dimension) Adjustment .........................................................................................4-1
Front to Back T-Rail and Table Edge/Rail Gap Adjustment.............................................................................4-3
C-ARM PARALLELISM ADJUSTMENT (A and SL only).....................................................................................4-3
X-RAY BEAM ALIGNMENT (A and SL only) .......................................................................................................4-4
X-RAY BEAM ALIGNMENT (C and W only) ........................................................................................................4-8
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