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3-D imaging for aortic plaque assessment.

Daniel Bainbridge1

  • 1Department of Anesthesia and Perioperative Medicine, University of Western Ontario, London, Ontario Canada. bainbridged@hotmail.com

Seminars in Cardiothoracic and Vascular Anesthesia
|May 28, 2005
PubMed
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Live 3D epiaortic echocardiography significantly improves the identification, localization, and extent definition of intra-aortic plaque during cardiac surgery, enhancing patient safety by avoiding neurologic complications.

Area of Science:

  • Cardiovascular Surgery
  • Medical Imaging
  • Neurology

Background:

  • Cardiac surgery carries risks of stroke and neurologic dysfunction, partly due to intra-aortic plaque disruption.
  • Intra-aortic plaque is a known risk factor for neurologic complications during aortic manipulation.
  • Current methods like transesophageal echocardiography and aortic palpation have limitations in plaque detection.

Purpose of the Study:

  • To evaluate the utility of live 3D epiaortic echocardiography for detecting intra-aortic plaque during cardiac surgery.
  • To compare the effectiveness of 3D versus 2D imaging in characterizing aortic plaque.
  • To assess modifications in scanning techniques for 3D probe utilization.

Main Methods:

  • Utilized a matrix x4 3D ultrasound probe with a modified scanning technique involving a saline-filled sheath.

Related Experiment Videos

  • Acquired real-time 3D and electrocardiography-gated "full volume" images.
  • Compared 2D and 3D imaging for plaque detection, localization, and extent definition.

    • Main Results:

    • Live 3D epiaortic echocardiography demonstrated superiority over 2D imaging.
    • 3D imaging was more effective in identifying, localizing, and defining the true extent of aortic plaque.
    • Sensitivity for plaque detection appeared similar between 2D and 3D imaging.

    Conclusions:

    • Live 3D epiaortic echocardiography is a valuable tool for enhancing the detection and characterization of intra-aortic plaque.
    • This technique can aid in avoiding plaque disruption during aortic manipulation, potentially reducing neurologic complications.
    • Modified scanning techniques facilitate the effective use of 3D probes in cardiac surgery.