Phantom study of an ultrasound guidance system for transcatheter aortic valve implantation

A. Jonathan McLeod, Maria E. Currie, John T. Moore, Daniel Bainbridge, Bob B. Kiaii, Michael W.A. Chu, Terry M. Peters

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A guidance system using transesophageal echocardiography and magnetic tracking is presented which avoids the use of nephrotoxic contrast agents and ionizing radiation required for traditional fluoroscopically guided procedures. The aortic valve is identified in tracked biplane transesophageal echocardiography and used to guide stent deployment in a mixed reality environment. Additionally, a transapical delivery tool with intracardiac echocardiography capable of monitoring stent deployment was created. This system resulted in a deployment depth error of 3.4 mm in a phantom. This was further improved to 2.3 mm with the custom-made delivery tool. In comparison, the variability in deployment depth for traditional fluoroscopic guidance was estimated at 3.4 mm.

Original languageEnglish (US)
Pages (from-to)24-30
Number of pages7
JournalComputerized Medical Imaging and Graphics
Volume50
DOIs
StatePublished - Jun 1 2016
Externally publishedYes

Keywords

  • Echocardiography
  • Fluoroscopy
  • Image guidance
  • Mixed reality
  • Transapical
  • Transcatheter aortic valve implantation

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Computer Vision and Pattern Recognition
  • Health Informatics
  • Computer Graphics and Computer-Aided Design

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