• Optima MR450w BASE 1.5T System Service Methods
  • 5690012-2EN Revision 3
  • Object ID: 00000018WHA30B89BGYZ
  • Topic ID: id_2002109 Version: 8.21
  • Date: Jun 20, 2021 11:23:09 PM

Setting up for HOEC calibration scan

About this task

The configuring process is different depending on the type of software you are using. Please select the appropriate procedure for configuring HOEC calibration hardware.

Setting up for HOEC calibration scan for DV26.0 or earlier

About this task

This procedure is for systems running DV26.0 or earlier.

Procedure

  1. Set up and align the LVShim phantom. Align the phantom so that:
    1. The phantom’s seam is oriented perpendicular to the table.
    2. The phantom’s z-axis is along the length of the cradle.
    3. The phantom is centered left to right with respect to the cradle top.
    Figure 1. Placing the LVShim phantom on the patient table
    Note: This image is a representative example. Actual systems may vary.
  2. Landmark on the LVShim phantom crosshairs.
  3. Press Advance to Scan.
  4. Start the HOEC tool from the Common Service Desktop on the Calibration tab.
    1. Select Calibration > Calibration Wizard.
    2. After the Calibration Wizard starts, select HOEC Calibration from the menu.
    3. Review the pre- and post-dependencies. Select Click here to start this tool.

Setting up for HOEC calibration scan for DV29.1 or later

About this task

This procedure is for systems running DV29.1 or later.

Procedure

  1. Set up the LVshim center sphere in the middle of the table on the Universal Phantom Pad.
    1. Set the Universal Phantom Pad at the 1080 mm position (from home) on the table and align the white lines on the pad with the alignment lights.
    2. Put the sphere on the pad with the strap (in the groove) in the orientation shown below.
      Figure 2. Placing the LVShim phantom on the patient table
      Note: This image is a representative example. Actual systems may vary.
  2. Make sure the laser lights are cross-centered on the universal phantom pad and press the landmark button.
    Note: Due to the tight landmarking tolerance, it is important to align the lasers on the cross lines of the universal positioner before setting the sphere.
  3. Press Advance to Scan.