Home
Adjustments/Calibrations
System
Running LVShim
The objective of the LVShim tool is to fine-tune magnet homogeneity.
Configuring for LVShim
Running LVShim

Adjustments/Calibrations
- System
  - B0 Drift Calibration
  - DQA II tool and troubleshooting
    If problems are encountered while using the Daily Quality Assurance (DQA) calibration procedure, refer to the following guidelines for troubleshooting.
  - Dual drive quadrature tool
  - Echo Planar Test (EPT)
  - System Gain Calibration
    Body system gain calibration.
  - Doing system gain calibration (PX28 or later)
  - Running LVShim
    The objective of the LVShim tool is to fine-tune magnet homogeneity.
    - Configuring for LVShim
      - Running LVShim
        Running LVShim - Gradshim
        Running LVShim in Auto mode
        Running LVShim in Manual mode
    - Saving information
      Save the current configurations and files in order to restore them later, if needed.
    - Doing a check scan
      A check scan is done at the conclusion of many procedures. This functional check assures the unit is in good clinical working order.
  - Running LVShim - Gradshim
  - Running LVShim in Auto mode
  - Running LVShim in Manual mode
  - ICC Coolant Deionization
  - ICN On/Off procedure for Dell R-620/630
  - DC offset adjustment
- Gradient
- Radio Frequency (RF)
- Magnet Enclosure
- Patient Table
- Global Operator Console (GOC)
- Spectroscopy

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA30842110GYZ
Topic ID: id_2003504 Version: 3.9
Date: Nov 3, 2021 6:27:19 PM

Running LVShim

Prerequisites


Safety
Before working in any GE Healthcare MR suite or performing any GE Healthcare service procedure, you must: Have read and understood all hazard conditions and safety requirements in the latest revision of the GE Healthcare MR Service Safety Manual (5452735). Have successfully completed all relevant GE Healthcare Environmental Health and Safety (EHS) courses (or for non-GE employees, equivalent workplace training courses). Comply with all site-specific training and workplace safety requirements. If you have any safety concerns at any time, do not begin work or immediately stop work and move to a safe location. Immediately contact your supervisor or site safety officer for instructions on how to proceed.