Tracking the position and rotational orientation of a catheter using a transmit array system

Haydar Celik, Davut I. Mahcicek, Oytunk Senel, Graham A. Wright, Ergin Atalar

Research output: Contribution to journalArticle

Abstract

A new method for detecting the rotational orientation and tracking the position of an inductively coupled radio frequency (ICRF) coil using a transmit array system is proposed. The method employs a conventional body birdcage coil, but the quadrature hybrid is eliminated so that the two excitation channels can be used separately. The transmit array system provides RF excitations such that the body birdcage coil creates linearly polarized and changing RF pulses instead of a conventional rotational forward-polarized excitation. The receive coils and their operations are not modified. Inductively coupled RF coils are constructed on catheters for detecting rotational orientation and for tracking purposes. Signals from the anatomy and from tissue close to the ICRF coil are different due to the new RF excitation scheme: the ICRF coil can be separated from the anatomy in real time, and after doing so, a color-coded image is reconstructed. More importantly, this novel method enables a real-time calculation of the absolute rotational orientation of an ICRF coil constructed on a catheter.

Original languageEnglish (US)
Article number6461415
Pages (from-to)809-817
Number of pages9
JournalIEEE Transactions on Medical Imaging
Volume32
Issue number4
DOIs
StatePublished - 2013
Externally publishedYes

Keywords

  • Catheter tracking
  • inductively coupled radio-frequency (ICRF) coil
  • interventional MRI
  • rotational orientation
  • transmit array

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications
  • Radiological and Ultrasound Technology
  • Software

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