Adjustments/Calibrations
- System
  - B0 Drift Calibration
  - Doing DQA calibration
    The DQA tool determines proper gradient polarity and proper gradient wiring by scanning a series of axial and coronal images of the DQA III phantom.
  - Troubleshooting the Daily Quality Assurance (DQA) II tool
    If problems are encountered while using the Daily Quality Assurance (DQA) calibration procedure, refer to the following guidelines for troubleshooting.
  - Dual drive quadrature tool
  - Doing the Echo Planar Test
  - Deionization procedure
  - HIS/RIS Setup and Troubleshooting
  - Calibrating High Order Shim (HOS)
    This procedure creates High Order Shim (HOS) reference maps characterizing the fields created by the HOS windings. These maps are used by the HOS feature.
  - ICN On/Off procedure for Sun 4100, 4170, and Dell R620
  - LVShim Procedures
  - Running LVShim
    The objective of the LVShim tool is to fine-tune magnet homogeneity.
  - Running LVShim - Gradshim
  - Running LVShim in Auto mode
  - Running LVShim in Manual mode
  - System gain calibration
    Head and body system gain calibration.
- Gradient
- Radio Frequency (RF)
- Magnet Enclosure
- Patient Table
- Global Operator Console (GOC)
- Spectroscopy

Discovery MR750 3.0T System Service Methods
5690009-2EN Revision 4
Object ID: 00000018WHA3063C6GYZ
Topic ID: id_2001847 Version: 8.0
Date: Feb 22, 2021 1:49:24 AM

Completing the EPT

About this task

When the tests are complete, one of the following messages appears:

Your tests completed successfully.
A serious system problem has been detected. This problem IS expected to impact image quality.
EPT was unable to determine PASS/FAIL status of the tests.

Procedure

If the tests completed successfully, proceed to Finalizing the EPT.
If the tests fail, open the Report Manager to view the test results and identify the failing tests.
Select Quit EPT and confirm.

Note:
If the EPT process is not shut down in an orderly manner, the service protocol directions may need to be reset. Open a C Shell (click C Shell in the Service Desktop Manager) and enter the following:

/usr/g/bin/ept Enter

resetept Enter

Note: The Shell window can only be launched when the EA3 user is included in the authorized EA3 group. Users not in this EA3 group will not have access to launch the Shell window. If you are not logged on as the proper logon user, log out and then log back on as the correct EA3 user with the authorized permissions.