Meeting Banner
Abstract #2317

Dual echo balanced SSFP for positive contrast of passive nitinol devices in MRI-guided cardiovascular interventions

Adrienne E Campbell-Washburn 1 , Toby Rogers 1 , Hui Xue 1 , Michael S Hansen 1 , Robert J Lederman 1 , and Anthony Z Faranesh 1

1 Division of Intramural Research, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, United States

In order to perform MR-guided cardiovascular interventions, imaging must be fast, interactive and provide good visualization of devices. A dual echo bSSFP sequence is implemented to image commercially available passive devices. This sequence generates a positive contrast device image and an anatomical reference image in a single acquisition (3 frames/second), and reduces SAR using a variable flip angle scheme. Graphical color overlay of the device is provided as visual feedback to operator. In vivo data of a nitinol guidewire in a pig shows utilization of this technique for improved visualization of commercially available passive devices without device modification.

This abstract and the presentation materials are available to members only; a login is required.

Join Here