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The impact of the CartoSound® image directly acquired from the left atrium for integration in atrial fibrillation ablation

  • Kenichi Kaseno
  • Kaori Hisazaki
  • Kohki Nakamura
  • Etsuko Ikeda
  • Kanae Hasegawa
  • Daisetsu Aoyama
  • Yuichiro Shiomi
  • Hiroyuki Ikeda
  • Tetsuji Morishita
  • Kentaro Ishida
  • Naoki Amaya
  • Hiroyasu Uzui
  • Hiroshi Tada
Article
  • 106 Downloads

Abstract

Purpose

Intracardiac echocardiographic (ICE) imaging might be useful for integrating three-dimensional computed tomographic (CT) images for left atrial (LA) catheter navigation during atrial fibrillation (AF) ablation. However, the optimal CT image integration method using ICE has not been established.

Methods

This study included 52 AF patients who underwent successful circumferential pulmonary vein isolation (CPVI). In all patients, CT image integration was performed after the CPVI with the following two methods: (1) using ICE images of the LA derived from the right atrium and right ventricular outflow tract (RA-merge) and (2) using ICE images of the LA directly derived from the LA added to the image for the RA-merge (LA-merge). The accuracy of these two methods was assessed by the distances between the integrated CT image and ICE image (ICE-to-CT distance), and between the CT image and actual ablated sites for the CPVI (CT-to-ABL distance).

Results

The mean ICE-to-CT distance was comparable between the two methods (RA-merge = 1.6 ± 0.5 mm, LA-merge = 1.7 ± 0.4 mm; p = 0.33). However, the mean CT-to-ABL distance was shorter for the LA-merge (2.1 ± 0.6 mm) than RA-merge (2.5 ± 0.8 mm; p < 0.01). The LA, especially the left-sided PVs and LA roof, was more sharply delineated by direct LA imaging, and whereas the greatest CT-to-ABL distance was observed at the roof portion of the left superior PV (3.7 ± 2.8 mm) after the RA-merge, it improved to 2.6 ± 1.9 mm after the LA-merge (p < 0.01).

Conclusions

Additional ICE images of the LA directly acquired from the LA might lead to a greater accuracy of the CT image integration for the CVPI.

Keywords

Atrial fibrillation Catheter ablation Intracardiac echocardiogram Image integration CartoSound 

Notes

Acknowledgements

We thank Mr. John Martin for his help in the preparation of the manuscript.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Kenichi Kaseno
    • 1
  • Kaori Hisazaki
    • 1
  • Kohki Nakamura
    • 2
  • Etsuko Ikeda
    • 1
  • Kanae Hasegawa
    • 1
  • Daisetsu Aoyama
    • 1
  • Yuichiro Shiomi
    • 1
  • Hiroyuki Ikeda
    • 1
  • Tetsuji Morishita
    • 1
  • Kentaro Ishida
    • 1
  • Naoki Amaya
    • 1
  • Hiroyasu Uzui
    • 1
  • Hiroshi Tada
    • 1
  1. 1.Department of Cardiovascular Medicine, Faculty of Medical SciencesUniversity of FukuiEiheiji-cho, yoshida-gun FukuiJapan
  2. 2.Division of CardiologyGunma Prefectural Cardiovascular CenterMaebashiJapan

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