• Object ID: 00000018WIA303D1970GYZ
  • Topic ID: id_40024673 Version: 1.7
  • Date: Mar 24, 2022 5:19:36 PM

T2MAP cartigram: acquire a scan

About this task

Use these steps to acquire T2MAP images for cartilage degeneration. The acquired data can be processed in READY View to produce T2 color maps.

Step-by-step instructions

  1. Start a scan session.
    Any transmit/recieve or receive only extremity coil can be used with T2MAP cartigram.
  2. Select a T2 Map protocol from your site or GE library.
  3. From the Workflow Manager, click Setup and make protocol adjustments, as needed.
    Typically select the following scan planes:
    • Axial - Patellofemoral Joint
    • Sagittal - Femoral Condyle
    • Coronal - Tibial Plateau
    • If slice spacing is less than 20% of the slice thickness and if the TR prescribed can accommodate the prescribed slices in a single acquisition, the system will automatically change the prescription to two acquisitions in order to reduce the cross talk effects.
    • The TE is the primary scan parameter that controls T2 weighting. It is not a selectable parameter with the T2MAP application.
    • Click the Advanced tab and select User CV values, if needed.
  4. Prescribe Graphic Rx and SAT, as appropriate. Due to the T2MAP scan time length, typically only scan in the area of interest, for example 5 slices in the post-surgical area.
    Figure 1. Standard axial slice prescription off a sagittal image
  5. If desired, see Add post-process task. Compatible post-process tasks include:
  6. Click Save Rx > Scan.