| Toward Magnetic Resonance-Guided Electroanatomical Voltage Mapping for Catheter Ablation of Scar-Related Ventricular Tachycardia: A Comparison of Registration Methods. | |
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MedLine Citation:
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PMID: 21914023 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Toward MR-Guided Electroanatomical Voltage Mapping for Catheter Ablation. Introduction: Integration of preprocedural delayed enhanced magnetic resonance imaging (DE-MRI) with electroanatomical voltage mapping (EAVM) may provide additional high-resolution substrate information for catheter ablation of scar-related ventricular tachycardias (VT). Accurate and fast image integration of DE-MRI with EAVM is desirable for MR-guided ablation. Methods and Results: Twenty-six VT patients with large transmural scar underwent catheter ablation and preprocedural DE-MRI. With different registration models and EAVM input, 3 image integration methods were evaluated and compared to the commercial registration module CartoMerge. The performance was evaluated both in terms of distance measure that describes surface matching, and correlation measure that describes actual scar correspondence. Compared to CartoMerge, the method that uses the translation-and-rotation model and high-density EAVM input resulted in a registration error of 4.32±0.69 mm as compared to 4.84 ± 1.07 (P <0.05); the method that uses the translation model and high-density EAVM input resulted in a registration error of 4.60 ± 0.65 mm (P = NS); and the method that uses the translation model and a single anatomical landmark input resulted in a registration error of 6.58 ± 1.63 mm (P < 0.05). No significant difference in scar correlation was observed between all 3 methods and CartoMerge (P = NS). Conclusions: During VT ablation procedures, accurate integration of EAVM and DE-MRI can be achieved using a translation registration model and a single anatomical landmark. This model allows for image integration in minimal mapping time and is likely to reduce fluoroscopy time and increase procedure efficacy. (J Cardiovasc Electrophysiol, Vol. pp. 1-7). |
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Authors:
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Qian Tao; Julien Milles; Carine VAN Huls VAN Taxis; Hildo J Lamb; Johan H C Reiber; Katja Zeppenfeld; Rob J VAN DER Geest |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-9-13 |
Journal Detail:
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Title: Journal of cardiovascular electrophysiology Volume: - ISSN: 1540-8167 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
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Created Date: 2011-9-14 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9010756 Medline TA: J Cardiovasc Electrophysiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2011 Wiley Periodicals, Inc. |
Affiliation:
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Division of Image Processing, Department of Radiology Department of Cardiology Leiden University Medical Center, Leiden, The Netherlands. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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