• Discovery MR750w and SIGNA™ Architect T 3.0T System Service Methods
  • 5690002-2EN Revision 4
  • Object ID: 00000018WIA303ABE20GYZ
  • Topic ID: id_13105891 Version: 3.5
  • Date: Apr 23, 2020 7:30:32 PM

GEM MCQA Setup - Posterior Array (PA) lower

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1-30 minutes-

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.

Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
TL Unified Phantom (For 3.0T)2-

5343347-2

-

Procedure

  1. Note:

    Before running MCQA on 3.0T PA, run the Dual Drive Quadrature Calibration Tool.

    Place the flat filler panel on the GEM table in the recess closest to the magnet bore.
    Figure 1. Flat filler panel
    1Flat filler panel
    2Bore
  2. Place the two TL Unified Phantoms on the GEM table centered in the right to left direction with the bottom edge of the second phantom (farthest from bore) aligned with the bottom edge of the PA Coil.
    Important: A slight misalignment of the phantoms and landmark may cause a false negative result from MCQA.
    Figure 2. Phantom position
    1Bore
    2Bottom edge of the second phantom/bottom edge of the PA coil
  3. Landmark at the bottom edge of the flat filler panel closest to the bore.
    Figure 3. Landmark location
    1Bottom edge of the flat filler panel/landmark location
    2Bore
  4. Press Advance to Scan.
  5. Run the Multi-Coil Quality Assurance Tool. Make sure that the correct coil is selected in the Current Coil field:
    • For the original PA coil: 3.0T_GEM_PA2
    • For the latest PA coil: 3.0T_GEM_PA_2 (note the extra underscore between "PA" and the number)
    Figure 4. MCQA Tool Menu