Flex Coil MCQA procedure

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	0 minutes	30 minutes	0 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Head TLT Sphere	1	-	46-265826G6	-
Head Loader	1	-	46-287899G1	-

Table 3. Required conditions
Condition	Reference	Effectivity
The following coil configuration names must be installed to run this tool: Check the system coil configuration for 1.5T 4Ch Large Flex Coil and 1.5T 4Ch Small Flex Coil configuration. If 1.5T 4Ch Large Flex Coil and 1.5T 4Ch Small Flex Coil have not been installed, select 1.5T 4Ch Large Flex Coil and 1.5T 4Ch Small Flex Coil from the list of available coils, and install.	-	-

Follow this process to prepare for the SNR test using the 1.5T 4Ch Flex coil suite.

The Quad Head Coil must be completely removed from the cradle before performing any body or surface coil scans. Failure to do this may result in damage to the Quad Head Coil T/R network.
Set the phantom and 1.5T 4Ch Large Flex coil on the cradle as following steps.
1. Connect the coil to port A. Connecting the coil to port B may result in the test failure;
2. Put the coil on velcro tape and align center of the coil and center of the cradle.
  
  Note:
  Place the 1.5T 4Ch Large Flex coil far enough from LPCA so that the coil cable won't be placed under the coil to avoid the low SNR.
  
  Figure 1. Setup 1
3. Place the phantom with holder on S-I center of the 1.5T 4Ch Large Flex Coil.
  
  Figure 2. Setup 2
4. Wind the 1.5T 4Ch Large Flex Coil around the phantom holder and fix by the Velcro tape on the strap.
  
  Figure 3. Setup 3
5. Verify that the coil cable is not placed under the coil.
  
  Figure 4. Setup 4
6. At the magnet, press “Alignment Light” button to turn on the light. Move the cradle to align the coil to the alignment lights. Press “Landmark” button to landmark the alignment.
  
  Figure 5. Setup 5
Move the coil to scan position by pushing the “Move to Scan” button, ensuring cable does not get snagged.
Perform MCQA Tool. Refer to Multi-Coil Quality Assurance Tool .

The Quad Head Coil must be completely removed from the cradle before performing any body or surface coil scans. Failure to do this may result in damage to the Quad Head Coil T/R network.
Set the phantom and 1.5T 4Ch Small Flex coil on the cradle as following steps.
1. Align center of the coil and center of the cradle.
  
  Note:
  Place the 1.5T 4Ch Small Flex coil far enough from LPCA so that the coil cable won't be placed under the coil to avoid the low SNR.
  
  Figure 6. Setup 1
2. Place the phantom with holder on S-I center of the 1.5T 4Ch Small Flex Coil.
  
  Figure 7. Setup 2
3. Wind the 1.5T 4Ch Small Flex Coil around the phantom holder and fix by the Velcro tape on the strap.
  
  Figure 8. Setup 3
4. Verify that the coil cable is not placed under the coil.
  
  Figure 9. Setup 4
5. At the magnet, press “Alignment Light” button to turn on the light. Move the cradle to align the coil to the alignment lights. Press “Landmark” button to landmark the alignment.
  
  Figure 10. Setup 5
Move the coil to scan position by pushing the “Move to Scan” button, ensuring cable does not get snagged.
Perform MCQA Tool. Refer to Multi-Coil Quality Assurance Tool .

No finalization steps.