Acoustically Active Catheter for Intracardiac Navigation by Color Doppler Ultrasonography

Minako Katayama, David Zarbatany, Stephen S. Cha, Mostafa Fatemi, Marek Belohlavek

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Navigation of intracardiac catheters by echocardiography is challenging because of the fundamental limitations of B-mode ultrasonography. We describe a catheter fitted with a piezoelectric crystal, which vibrates and produces an instantaneous marker in color flow Doppler scans. The navigation learning curve was explored first in six pigs. Accuracy and precision of targeting with the navigation marker "off" (i.e., B-mode imaging) and "on" were assessed in another six pigs. Paired comparisons confirmed significantly (p = 0.04) shorter mean distances achieved in each pig with the color Doppler marker. Pooled (mean ± standard deviation) distance of the catheter tip from the target crystal was 5.27 ± 1.62 mm by B-mode guidance and 3.66 ± 1.45 mm by color Doppler marker navigation. Dye injection targeted into the ischemic border zone was successful in 8 of 10 pigs. Intracardiac catheter navigation with color Doppler ultrasonography is more accurate compared with conventional guidance by B-mode imaging.

Original languageEnglish (US)
JournalUltrasound in Medicine and Biology
DOIs
StateAccepted/In press - Nov 17 2016

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Keywords

  • Acoustically active catheter
  • Color flow Doppler ultrasonography
  • Ultrasonographic navigation
  • Ultrasound

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Biophysics
  • Radiology Nuclear Medicine and imaging

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