• Discovery MR750 3.0T System Service Methods
  • 5690009-2EN Revision 4
  • Object ID: 00000018WIA30C7ED20GYZ
  • Topic ID: id_13105780 Version: 4.0
  • Date: Feb 14, 2020 4:10:57 PM

3.0T HD T/R Knee Array Coil Setup for MCQA or SNR Test

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable15 minutesNot Applicable
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Phantom1Legacy phantom kit

5160254-4

-
Phantom Positioner1Legacy and unified phantom kit

5114356-12

-
Large Cylindrical Unified Phantom1Unified phantom kit

5342679-2

-
Table 3. Required conditions
ConditionReferenceEffectivity

The following coil configuration names must be installed to run this tool: HD TR Knee PA.

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About this task

Note:

Coils do not ship with phantoms. Phantoms come in a unified phantom set with the MR system.

Topic ID: id_SL3173396-625337

Legacy Phantom Setup

Procedure

  1. Note:

    If installing the coil for the first time on a system, refer to Auto Coil Install.

    Place the 3.0T HD knee array coil, phantom positioner, and phantom on the patient cradle. Take note of the serial number of the coil.
    Figure 1. Coil and Phantom Setup
  2. Ensure that the phantom positioner is aligned with the posterior coil section as indicated by the marks on the positioner.
    Figure 2. Phantom Positioner Alignment Marks
  3. Being careful to align the connector pins, place the anterior coil section onto the posterior coil section and latch into place. The scanner will not operate if the coil sections are not latched correctly.
    Figure 3. Anterior Coil Section in Place
  4. Ensure that the coil is aligned and centered with respect to the baseplate as indicated by the arrows on the baseplate offset scale.
    Figure 4. Align and Center Coil
  5. Establish an axial landmark using the reference mark on top of the coil. Advance to scan.
    Figure 5. Establish Landmark
  6. Perform Multi-Coil Quality Assurance Tool (MCQA), if available. Otherwise, perform Surface Coils SNR Test.
Topic ID: id_SL3173397-625337

Unified Phantom Setup

Procedure

  1. Place the lower section of the coil on the patient table.
    Figure 6. Coil Placement
  2. Align the alignment mark on the coil to zero position on the scale.
    Figure 7. Alignment Marks
  3. Place the large cylindrical unified phantom into the positioner.
    Figure 8. Phantom Placed into Positioner
  4. Place this phantom positioner setup on the lower part of the coil.
    Figure 9. Phantom Positioner Placement
  5. Ensure that the phantom positioner is aligned with the posterior coil section as indicated by the marks on the positioner and the coil.
    Figure 10. Positioner Aligned with Posterior Coil Section
  6. Carefully align the connector pins on the lower part of the coil with the upper part of the coil and latch both the coil sections into place. The scanner will not operate if the coil sections are not latched correctly.
    Figure 11. Coil Sections in Place
  7. Connect the coil to port A of the system LPCA. Landmark the coil at the cross mark available near the handle of the coil. Advance to scan.
    Figure 12. Landmark Coil
  8. Perform MCQA Test, if available. Otherwise, perform Surface Coils SNR Test.
Topic ID: id_14932019

Finalization

Finalization

No finalization steps.