GEM MCQA setup - Head Neck Unit (HNU) AB bridge

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	30 minutes	Not Applicable

Table 2. Tools and test equipment
The 1.5T GEM Coil MCQA will use the 1.5T phantoms, which are green in color. The 3.0T GEM Coil MCQA will use the 3.0T phantoms, which are pink in color.

Note:
Coils do not ship with phantoms. Phantoms come in a Unified Phantom set with the MR System.
Item	Quantity	Effectivity	Part number	Manufacturer
Large Cylindrical Unified Phantom (For 1.5T)	1	-	5342679	-
TL Unified Phantom (For 1.5T)	1	-	5343347	-
Large Cylindrical Unified Phantom (For 3.0T)	1	-	5342679-2	-
TL Unified Phantom (For 3.0T)	1	-	5343347-2	-
Head Neck Unit (HNU) Phantom Positioner (For both 1.5T and 3.0T)	1	-	5405750	-

Remove the Flat Filler Panel from the GEM table if present.
Place the HNU posterior unit on the GEM table as shown.

Figure 1. Placement of HNU Posterior Unit
Place the HNU Phantom Positioner into the HNU posterior unit, then place the Large Cylindrical Unified Phantom and TL Unified Phantom into the Positioner.

Figure 2. Placement of Large Cylindrical and TL Unified Phantoms
Connect the HNU AB bridge unit with the HNU posterior unit.

Figure 3. Connection of HNU AB Bridge and Posterior Units
Connect the coil to the P2 Port on the GEM table, landmark the coil at the crosshair mark (indicated below), and press Advance to Scan.

Figure 4. Landmarking Coil
Run the Multi-Coil Quality Assurance Tool. Ensure that the correct coil is selected in the Current Coil field: 1.5T_GEM_HNU_AB_Bridge (shown below) or 3.0T_GEM_HNU_AB_Bridge for a 3.0T system.

Figure 5. MCQA Tool Menu

No finalization steps.