the challenge of motion in cardiac ct imaging
snapshot freeze 2

Automated whole Heart Motion correction

  • 6x*
    Improvement in reduction of blurring artifacts of the coronary arteries due to cardiac motion

  •  

    24 msec**
    Effective temporal resolution at 0.28 second rotation speed

  •  

    29 msec*
    Effective temporal resolution at 0.35 second rotation speed

Clinical Gallery

  • HR = 89 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 88 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 89 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 128 BPM • 8-month

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 84 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 124 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 124 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

  • HR = 115 BPM

    Standard reconstruction (left image)
    SnapShot Freeze 2 (right image)

Supporting Materials

*As demonstrated in phantom testing using a commercially available motion phantom with linear motion of variable velocity. The 6x improvement is referenced against images without application of Snapshot Freeze 2. Results may vary in clinical applications.

**Snapshot Freeze 2, in conjunction with 0.28s/rotation gantry speed, provides a reduction in coronary motion artifacts that is equivalent to a 0.047s/rotation equivalent gantry rotation speed with effective temporal resolution of 24 msec. As demonstrated in phantom testing using a commercially available motion phantom and also with a mathematical cardiac phantom with linear motion of variable velocity. The 0.047 s/rotation images are modeled without application of Snapshot Freeze 2. Results may vary in clinical applications.

SnapShot Freeze 2 is available on GE AW workstation 4.7 ext.18 (or later) or via the CT Smart Subscription Cardiology package.

JB18468XX

JB18468XX