| Integration of MR images with electroanatomical maps: feasibility and utility in guiding left ventricular substrate mapping. | |
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MedLine Citation:
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PMID: 20960225 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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PURPOSE: The purpose of the study is to evaluate the feasibility and utility of magnetic resonance (MR) image and electroanatomic (EA) maps integration in guiding detailed left ventricle (LV) anatomical and substrate mapping, identifying the most accurate registration strategy. METHODS: Twenty-five patients with dilated ischemic or non-ischemic cardiomyopathy were enrolled. We first verified the feasibility and accuracy of EA mapping and MR image integration using four different strategies (15 patients). Different EA maps were performed according to the strategy in exam: aortic map, collected from the descending portion of the arch to the ascending one; partial or complete LV map, reconstructed with a minimum of 40 widely distributed points or 200 points, respectively. We then evaluated the utility in LV substrate mapping of the most accurate integration method identified (ten patients). RESULTS: Strategy III, based on aortic map and a partial LV map, allowed us to obtain an accurate integration with MR images of aorta and LV with a lower number of EA LV points; we therefore used this strategy during phase II of the study. Both mean LV end diastolic volume and long- and short-axis LV end diastolic diameters obtained by MR were not significantly different compared with Carto measurements. Eighty-eight percent of the segments with transmural/subendocardial scar detected by delayed enhanced MR were localized on bipolar voltage maps projected on MR-integrated images. CONCLUSION: This study shows that integration strategy III represents the optimal registration method. Its clinical utility consists on guiding the catheter roving inside the chamber, mapping all areas of the LV and optimizing scar reconstruction. |
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Authors:
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Claudio Pandozi; Serena Dottori; Carlo Lavalle; Sabina Ficili; Marco Galeazzi; Maurizio Russo; Angela Pandozi; Giovanni Camastra; Gerardo Ansalone; Massimo Santini |
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Publication Detail:
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Type: Journal Article Date: 2010-10-20 |
Journal Detail:
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Title: Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing Volume: 29 ISSN: 1572-8595 ISO Abbreviation: J Interv Card Electrophysiol Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9708966 Medline TA: J Interv Card Electrophysiol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 157-66 Citation Subset: IM |
Affiliation:
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Department of Cardiology, San Filippo Neri Hospital, Via Martinotti 20, 00135 Rome, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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