| Image integration using NavX Fusion: initial experience and validation. | |
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MedLine Citation:
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PMID: 18362019 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Three-dimensional virtual anatomic navigation is increasingly used during mapping and ablation of complex arrhythmias. NavX Fusion software aims to mold the virtual anatomy to the patient's computed tomography (CT) image; however, the accuracy and clinical usefulness of this system have not been reported. OBJECTIVE: The purpose of this study was to assess the accuracy and describe the initial experience of CT image integration using NavX Fusion for atrial fibrillation ablation. METHODS: This study consisted of 55 consecutive patients undergoing atrial fibrillation ablation using NavX Fusion navigation. Left atrial NavX geometries were compared to a corresponding CT for geometric match. Geometric match, expressed as the difference in millimeters between CT and NavX geometry, was calculated for the original geometry (GEO-1), field scaled and primary fused geometry (GEO-2), and final secondary fused geometry (GEO-3). Navigational accuracy was assessed by moving the catheter to 10 discrete anatomic sites and determining the distance between the catheter tip and the closest GEO-2, GEO-3, and CT surface. Fusion integration time and procedural and fluoroscopic durations were recorded to assess clinical usefulness. RESULTS: GEO-1, GEO-2 and GEO-3 were associated with CT-GEO errors of 6.6+/-2.8 mm, 4.1+/-0.7 mm, 1.9+/-0.4 mm, respectively. Navigational accuracy was not significantly different for GEO-2, GEO-3, and CT at 3.4+/-1.6 mm to any surface. A significant (P < or =.001) inverse curvilinear relationship was present between case number and the time required for image integration (r(2) = 0.35) and the fluoroscopic time normalized for procedural duration (r(2) = 0.18). CONCLUSION: Image integration using the NavX Fusion software is highly accurate and is associated with a progressive reduction in fluoroscopic time relative to procedural duration. |
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Authors:
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Anthony G Brooks; Lauren Wilson; Pawel Kuklik; Martin K Stiles; Bobby John; Shashidhar; Hany Dimitri; Dennis H Lau; Ross L Roberts-Thomson; Christopher X Wong; Glenn D Young; Prashanthan Sanders |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies Date: 2008-01-17 |
Journal Detail:
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Title: Heart rhythm : the official journal of the Heart Rhythm Society Volume: 5 ISSN: 1556-3871 ISO Abbreviation: Heart Rhythm Publication Date: 2008 Apr |
Date Detail:
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Created Date: 2008-03-25 Completed Date: 2008-06-13 Revised Date: 2009-10-27 |
Medline Journal Info:
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Nlm Unique ID: 101200317 Medline TA: Heart Rhythm Country: United States |
Other Details:
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Languages: eng Pagination: 526-35 Citation Subset: IM |
Affiliation:
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Cardiovascular Research Centre, Department of Cardiology, Royal Adelaide Hospital and Disciplines of Medicine and Physiology, University of Adelaide, Adelaide, South Australia. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Action Potentials Atrial Fibrillation / therapy* Body Surface Potential Mapping* Cardiac Pacing, Artificial Catheter Ablation / instrumentation*, methods Electrophysiologic Techniques, Cardiac / instrumentation*, methods Female Fluoroscopy / instrumentation Heart Conduction System / physiopathology Humans Imaging, Three-Dimensional* / methods Male Middle Aged Software* Time Factors Tomography, X-Ray Computed* / methods |
| Comments/Corrections | |
Comment In:
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Heart Rhythm. 2008 Apr;5(4):536-7
[PMID:
18325848
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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