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
TL Unified Phantom	2	-	5343347	-
Large Cylindrical Phantom	1	-	5342679	-

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 16Ch Large Flex Coil and 1.5T 16Ch Medium Flex Coil configuration. If 1.5T 16Ch Large Flex Coil and 1.5T 16Ch Medium Flex Coil have not been installed, select 1.5T 16Ch Large Flex Coil and 1.5T 16Ch Medium Flex Coil from the list of available coils, and install.	-	-

Follow this process to prepare for the SNR test using the 1.5T 16Ch Flex coil suite.

Table 4. Coils
GE Part number	Description
5430000-4	GEM Flex Coil 16-S Array, 1.5T Receive Only
5430000-3	GEM Flex Coil 16-M Array, 1.5T Receive Only
5430000-2	GEM Flex Coil 16-L Array, 1.5T Receive Only
5430000-17	GEM Flex Interface 16ch Fixed, 1.5T HD-Connector

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.
Connect 1.5T HD-Connector with Flex coil.
Set the phantom and 1.5T 16Ch Large Flex coil on the cradle as following steps.
1. Connect the coil to port B. Connecting the coil to port A 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 16Ch Large Flex coil far enough from LPCA so that the coil cable won't be placed under the coil to avoid the low SNR.
3. Place the phantom with holder on S-I center of the 1.5T 16Ch Large Flex Coil.
  
  Figure 1. Setup
4. 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 2. Landmark
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.
Connect 1.5T HD-Connector with Flex coil.
Set the phantom and 1.5T 16Ch Medium or 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 16Ch Medium or Small Flex coil far enough from LPCA so that the coil cable won't be placed under the coil to avoid the low SNR.
2. Place the phantom with holder on S-I center of the 1.5T 16Ch Medium or Small Flex Coil.
  
  Figure 3. Setup 2
3. 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 4. Landmark
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.