Notice: Users may be experiencing issues with displaying some pages on stanfordhealthcare.org. We are working closely with our technical teams to resolve the issue as quickly as possible. Thank you for your patience.
 

Learn about the flu shot, COVID-19 vaccine, and our masking policy »

Stanford Health Care

Phantom study of an ultrasound guidance system for transcatheter aortic valve implantation COMPUTERIZED MEDICAL IMAGING AND GRAPHICS McLeod, A., Currie, M. E., Moore, J. T., Bainbridge, D., Kiaii, B. B., Chu, M. A., Peters, T. M. 2016; 50: 24–30

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 3.4mm in a phantom. This was further improved to 2.3mm with the custom-made delivery tool. In comparison, the variability in deployment depth for traditional fluoroscopic guidance was estimated at 3.4mm.

View details for DOI 10.1016/j.compmedimag.2014.12.001

View details for Web of Science ID 000376833600004

View details for PubMedID 25595049