Chapter E - C-ARM AND IMAGING ARM
ProMax X-ray unit with Dimax3 E-33
PANORAMIC BEAM AND PATIENT POSITIONING MECHA-
Technical Manual
1.10 Patient positioning mechanism adjustment
NOTE If the distance between the center line on the ProMax alignment tool and the ball phan-
tom x- and y-lines is max. +/-5 mm then the alignment error can be corrected by moving
the primary collimator according to the instructions in section 1.11 “Additional adjust-
ment method to check the eccentricity of the rotation movement: reference axis mode”
on page E-44.
Remove the inner cover from tube head assembly, the sensor head covers and the lower
cover of the C-arm as well as the shoulder arm cover. Refer to section 3 “REMOVING THE
COVERS” on page E-85. Remove the cover of the patient support table, refer to section 2.1
“Patient support table cover” on page F-7.
Attach the ball phantom to the patient positioning mechanism adapter. Attach the sensor
head alignment tool to the sensor head connector.
Slide the alignment pin through the hole in the shoulder joint so that it goes into the position-
ing holes in the shoulder arm and column as shown on the Fig. 59 below.
1.10.1 Adjustment in ball phantom’s x-direction
Manually position the C-arm as shown on the Fig. 59 (C-arm perpendicular to the patient sup-
port table). Note the position of the tube head and sensor head. Slide the alignment pin
through the hole in the elbow joint so that it goes into the positioning hole in the C-arm.
Figure 59
Dipin_2.eps
Shoulder joint pin
Elbow and C-arm
joint pin
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