• Object ID: 00000018WIA3013C770GYZ
  • Topic ID: id_40025832 Version: 1.5
  • Date: Apr 14, 2022 9:33:22 AM

MAGiC: post-process use SyMaps® to display measured values

About this task

Use the SyMaps® to display the measured values for tissue properties per voxel. The quantitative/parametric maps T1, T2 and PD are the foundation of synthetic MRI. In addition to the relaxation times T1 and T2 the corresponding relaxation rates R1 and R2 are available.

Step-by-step instructions

  1. Place the cursor in a viewport and right-click to view the right-click menu.
  2. From the right-click menu, select SyMaps.
  3. From the SyMaps menu, make a selection.
    Figure 1. SyMaps menu
    Table 1. SyMaps® selections
    SyMaps® selectionSyMaps®selection
    Click T1 Map and the T1 relaxation times are displayed in ms. Interval of measurements: 300 - 4300 ms

    		Click T2 Map and the T2 relaxation times are displayed in ms. Interval of measurements: 20 - 2000 ms

    Click R1 Map and R1 is displayed in s-1, R1 = 1/T1.

    		Click R2 Map and R2 is displayed in s-1, R2 = 1/T2.

    Click PD Map and the proton density is displayed in percentage units (pu) relative to a reference value of 100 pu. The reference value used depends on the detected object. For brains the ventricular CSF is used for calibration. Fat has higher signal strength than water and is therefore displayed with values above 100 pu.

  4. To save the SyMaps®, place the cursor in the SyMaps®viewport you want to save and from the menu bar, click File > Save SyMaps (T1T2PD) to Browser.
    • The SyMaps®images are saved as black/white (non-color), which is different from how they are viewed in the MAGiC session application.
    • The series is saved as a MULTI_QMAP series type.
      Figure 2. Save SyMaps® (T1T2PD) to Browser patient list
  5. To save an image as a screen shot, from the menu bar, click File > Save Screenshot to Browser.
    • The screenshot is saved as a SSAVE file type.
      Figure 3. Save Screenshot to Browser patient list
  6. To view the SyMaps® once you have exited MAGiC, follow these steps.
    1. From the patient list, click a SyMaps® series.
      • Note: SyMaps® is labeled as a QMAP in the patient list.
        Figure 4. Select a SyMaps® series
    2. From the Session Apps list, click MAGiC.