• Object ID: 00000018WIA3005B970GYZ
  • Topic ID: id_40024815 Version: 1.4
  • Date: Mar 29, 2022 1:06:12 PM

Reformat workflow

Before you begin

Consider this information before you generate a reformatted image.

Reformatting allows you to define and display cross-sections of a 2D stack or 3D volume of image data that are oriented differently from the original acquisition images.

A baseline view is a basic axial, coronal or sagittal view. Of these, the acquisition view displays the images in the acquisition plane of the original image set, the other two are the corresponding orthogonal reformatted views. They can be moved to show any location in the 3D volume, but remain aligned parallel to the three main axes of the RAS coordinate system. An oblique view is a plane reformatted view that can be both moved and rotated to any location and orientation within the 3D volume.

If a feature of interest extends beyond a single plane, standard baseline or oblique view reformatting cannot show the entire feature no matter how you position the oblique plane. To create a single view that includes the entire feature, use curved reformatting to create a curved cross-section.

Reformat is primarily used for MRA, MRCP, and IAC applications.

About this task

The typical reformat workflow consists of creating, viewing and filming reformatted images.

Step-by-step instructions

  1. From the Patient List, select a reformat appropriate exam.
  2. From the Session Apps List, click Reformat/MIP.
    • The Reformat package uses the FIRST selected image in the Patient List as a basis for using/discarding the other images selected for reformation.
    • All images must have the same orthogonal scan plane, image center, and pixel size.
    • Screen saved images are not allowed.
    • The range of images selected must not contain two images at the same location, and the inter-slice distance must not exceed 10 mm.
    • Isometric voxels and overlapping slices improve the quality of Reformat images.
  3. Select either a baseline or oblique view.
  4. Adjust slice thickness by using the slice active annotation or the review controller.
  5. Adjust the render mode from Average to MIP.
    Figure 1. Render mode annotation
  6. Click the axial viewport to make it active, and from the Visualization toolbar, click the Simple Oblique icon () and a solid line cursor in the center of two dotted line cursors appears representing the thickness of the plane displayed in the Oblique viewport.
  7. Click and drag the line to rotate it to see the anatomy of interest.
  8. Click on the Oblique icon () to create a double oblique, if applicable.
    • Optional: Click the Measure/Annotate toolbar to add measurements or annotation.
    • Optional: Save an individual image.
      Figure 2. Reformat viewports
  9. Film images with Oblique Batch Film or save images.
  10. Save Oblique batch images. For details, see Create a batch series.
  11. To exit Reformat or MR General Review application session, see Volume Viewer workflow
    When you close Reformat, the MIP images are gone unless they were saved from the Export toolbar.