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On the use of CartoSound for left atrial navigation.

Abstract：

INTRODUCTION:The utility of "virtual" imaging systems for left atrial (LA) navigation has been hampered by inadequate spatial detail, as well as inaccurate integration of more detailed preoperative images, such as those generated by computed tomography (CT). CartoSound is an intracardiac echocardiography (ICE)-based technology that promises to ameliorate these problems. Our objective was to examine the capabilities and optimal use of CartoSound, both as a stand-alone tool and as a facilitator of CT image integration. METHODS AND RESULTS:In 10 patients, CartoSound models of the LA were generated using each of 4 ICE transducer locations: LA, right atrium (RA), coronary sinus (CS), and esophagus (ESO). Each of these models was used to register CT-derived LA models into the operative workspace. We correlated the comprehensiveness of LA imaging from each transducer location with the quality of the CT registration, as well as the accuracy of mock circumferential antral ablation guided by the CartoSound model alone or by the CT model. The LA transducer location provided the most comprehensive rendering of the LA, which was associated with higher quality CT registration and greater CT-guided mock ablation accuracy. Mock ablation guided by the CartoSound model alone was at least as accurate as CT, although the models were less intuitive. CONCLUSIONS:For LA navigation, optimal use of CartoSound may require LA transducer location, which is effective for stand-alone use and as a facilitator of CT image integration.

journal_name

J Cardiovasc Electrophysiol

journal_title

Journal of cardiovascular electrophysiology

authors

Schwartzman D,Zhong H

doi

10.1111/j.1540-8167.2009.01672.x

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

656-64

issue

6

eissn

1045-3873

issn

1540-8167

pii

JCE1672

journal_volume

21

pub_type

杂志文章

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