• Object ID: 00000018WIA30071970GYZ
  • Topic ID: id_40022257 Version: 1.5
  • Date: Apr 14, 2022 10:13:38 AM

MR-Touch workflow

Before you begin

Indications for use

MR-Touch is a software and hardware option intended for use with GE MR systems. It is indicated for magnetic resonance imaging of the human body in adults.

MR-Touch generates transverse sectional information related to the relative stiffness of soft tissue. It consists of hardware as well as acquisition and reconstruction software. The hardware components induce vibrations into the scan subject. The MR-Touch acquisition software is an evolutionary improvement to the GRE (1.5T) sequence. The sequence synchronizes the induced vibrations to acquire a series of phase-contrast images over time. The phase-contrast imaging technique measures motion or displacement. The displacement from the induced vibrations is detected using the time-series of phase-contrast images. The displacement information is reconstructed and presented as strain wave and relative stiffness images.

When used with a GE MR system, MR-Touch is capable of producing transverse images of internal body structures such as muscle and liver.

When interpreted by a trained physician, these images may provide information that can be useful in determining a diagnosis.

About this task

Use these steps to acquire and process MR-Touch images.

Step-by-step instructions

  1. Build an MR-Touch protocol.
  2. Setup the equipment and patient.
  3. Start a scan session.
  4. Acquire a 3-Plane Localizer.
    • Acquire the localizer at end expiration to match the breathing instructions of the MR-Touch series.
  5. Acquire a Calibration scan.
    • Set the scan parameter Calibration in Prescan option to Off so that a manual calibration is acquired.
    • Acquire the calibration scan at end expiration to match the breathing instructions of the MR-Touch series.
  6. Prescribe and acquire the MR-Touch series.
  7. Draw ROIs in READY View MR-Touch workflow or from the Viewer.

Results

Considerations

As a result of MR-Touch algorithm improvements, you may see a smoother appearance for Elastograms, a slight change in numerical value from an ROI, and improved processing times.