Document Detail


Dynamic registration of preablation imaging with a catheter geometry to guide ablation in a Swine model: validation of image integration and assessment of catheter navigation accuracy.
MedLine Citation:
PMID:  19682169     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Catheter ablation of atrial and ventricular tachyarrhythmia involves anatomically based cardiac ablation strategies. CT and MRI images provide the most detailed cardiac anatomy available. Integration of these images into a mapping system should produce detailed and accurate models suitable to guide ablation. OBJECTIVE: The purpose of this study was to validate and assess the accuracy of a novel CT and MRI image integration algorithm designed to facilitate catheter navigation and ablation. METHODS: Using a lateral thoracotomy, markers were sutured to the epicardial surface of each cardiac chamber in 12 swine. Detailed CT/MRI anatomy was imported into the mapping system. The CT/MRI image was then integrated with a detailed catheter geometry of the relevant chamber using a new image integration algorithm. The epicardial markers, identified from the CT/MRI images, were then displayed on the surface of the integrated image. Guided only by the integrated CT/MRI, a single RF lesion was directed at the corresponding endocardial site for each epicardial marker. At autopsy, the distance from the endocardial RF lesion to the target site was assessed. RESULTS: The mean position error (CT/MRI) for the left atrium was 2.5 +/- 2.4 mm/5.1 +/- 3.9 mm, for the right atrium 6.2 +/- 6.5 mm/4.3 +/- 2.2 mm, for the right ventricle 6.2 +/- 4.3 mm/6.6 +/- 5.3 mm, and for the left ventricle 4.7 +/- 3.4 mm/3.1 +/- 2.7 mm. There was no cardiac perforation or tamponade. CONCLUSION: CT and MRI images can be effectively utilized for catheter navigation when integrated into a mapping system. This novel registration module with dynamic registration provides effective guidance for ablation.
Authors:
J Jason West; Amit R Patel; Christopher M Kramer; Adam S Helms; Eric S Olson; Vamsee Rangavajhala; John D Ferguson
Related Documents :
9426739 - Transperineal radiofrequency interstitial tumor ablation of the prostate: correlation o...
20093619 - Thermoablative treatments for malignant liver lesions: 10-year experience of mri appear...
19926319 - Simultaneous determination of labile proton concentration and exchange rate utilizing o...
20237779 - Diaphragmatic hernia after radiofrequency ablation for hepatocellular carcinoma.
17153409 - Quality assurance and system stability of a clinical mri-guided focused ultrasound syst...
16636409 - Detecting cryoablation with eit and the benefit of including ice front imaging data.
17879409 - Colorectal neoplasm: magnetic resonance colonography with fat enema-initial clinical ex...
14680909 - Marchiafava-bignami disease: magnetic resonance imaging findings in corpus callosum and...
12763349 - Dyke-davidoff-masson syndrome manifested by seizure in late childhood: a case report.
Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies     Date:  2009-08-11
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  21     ISSN:  1540-8167     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-05-21     Completed Date:  2010-09-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  81-7     Citation Subset:  IM    
Affiliation:
University of Virginia Division of Cardiovascular Medicine, St. Paul, Minnesota, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Cardiovascular Surgical Procedures / methods*
Catheter Ablation / instrumentation,  methods*
Heart / radiography*
Magnetic Resonance Imaging / methods*
Models, Animal
Myocardium / pathology*
Preoperative Care / methods
Subtraction Technique
Surgery, Computer-Assisted / methods
Swine
Systems Integration
Therapeutics
Tomography, X-Ray Computed / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  A Novel Mechanism of Failure to Detect Atrial Arrhythmias by Pacemakers and Implantable Cardioverter...
Next Document:  Clinical Value of Noninducibility by High-Dose Isoproterenol Versus Rapid Atrial Pacing After Cathet...