3-D imaging for aortic plaque assessment

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.
• 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.