• Object ID: 00000018WIA30E6D770GYZ
  • Topic ID: id_40022946 Version: 1.2
  • Date: Jan 3, 2022 11:18:50 AM

Fallback

About this task

Use these steps to move the slice centers from their graphically prescribed position to isocenter, along the localizer slice-select direction. This can be in either the phase or the frequency direction on any non-slice direction images in Graphic Rx.

Fallback to 0 can be used on any non-slice direction images. For example, axial slices have been prescribed and the sagittal localizer image viewport is active; the Fallback button reads Fallback to R0. The button will change to Fallback to A0 when the coronal image viewport is active. With axial slices prescribed, Fallback is not available for use in the axial image viewport. If the slice plane is oblique and locations have been deposited, the system will determine the closest orthogonal plane based on slice tilt/angle and fallback will not be allowed in that plane.

Step-by-step instructions

  1. Display the desired images in the Graphic Rx viewports.
  2. From the Graphic Rx toolbar, click the Graphic Rx Tools menu icon.
  3. From the Graphic Rx Tools menu, click the Fallback check box.
    • The slice centers are moved from their graphically prescribed position to isocenter
    • The Fallback icon turns off automatically when a new image is displayed; however, the fallback location remains unless the button is selected again.