GE HEALTHCARE
DIRECTION 2307224-100, REVISION 6DISCOVERY LS SYSTEM SERVICE MANUAL
Page 258 Chapter 8 - System QC, Calibration and Functional Tests
For Discovery LS systems, the following changes to this procedure should
be made:
1.) The alignment of the phantom is performed using the inner laser light only. Landmarks should
be defined only with the inner laser light in the CT position.
2.) The landmark should be aligned on the rear part of the phantom, close to the cover. The
distance between the rear part of the phantom and the landmark should be less than 2 cm.
3.) After the landmarks are defined, changes to the cradle position are not permitted. The
movement of the phantom to the PET position is only performed by moving the table, using the
pedal and the remote control switch on the secondary base.
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