Active Device Tracking and High-Resolution Intravascular MRI Using a Novel Catheter-Based, Opposed-Solenoid Phased Array Coil

Claudia M. Hillenbrand, Daniel R. Elgort, Eddy Y. Wong, Arne Reykowski, Frank K. Wacker, Jonathan S. Lewin, Jeffrey L. Duerk

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

A novel two-element, catheter-based phased array coil was designed and built for both active MR device tracking and high-resolution vessel wall imaging. The device consists of two independent solenoid coils that are wound in opposite directions, connected to separate receive channels, and mounted collinearly on an angiographic catheter. The elements were used independently or together for tracking or imaging applications, respectively. The array's dual functionality was tested on a clinical 1.5 T MRI scanner in vitro, in vivo, and in situ. During real-time catheter tracking, each element gave rise to a high-amplitude peak in the respective projection data, which enabled reliable and robust device tracking as well as automated slice positioning. In vivo microimaging with 240 μm inplane resolution was achieved in 9 s using the device and TrueFISP imaging. Therefore, a single device was successfully implemented that met the combined requirements of intravascular device tracking and imaging.

Original languageEnglish (US)
Pages (from-to)668-675
Number of pages8
JournalMagnetic Resonance in Medicine
Volume51
Issue number4
DOIs
StatePublished - Apr 2004
Externally publishedYes

Keywords

  • Catheter RF coils
  • Interventional device tracking
  • Intravascular MRI
  • Phased array
  • Vessel wall imaging

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Fingerprint

Dive into the research topics of 'Active Device Tracking and High-Resolution Intravascular MRI Using a Novel Catheter-Based, Opposed-Solenoid Phased Array Coil'. Together they form a unique fingerprint.

Cite this