Characterization of Radiofrequency Ablation Lesions With Gadolinium-Enhanced Cardiovascular Magnetic Resonance Imaging

Dickfeld, Timm; Kato, Ryuichi; Zviman, Menekhem; Lai, Shenghan; Meininger, Glenn; Lardo, Albert C.; Roguin, Ariel; Blumke, David A.; Berger, Ronald D.; Calkins, Hugh; Halperin, Henry R.

doi:10.1016/j.jacc.2005.07.070

Cited by 166 publications

(159 citation statements)

References 29 publications

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“…5A-C), which virtually did not differ from that formed after occlusion infarction. Interestingly an MRI study of the progression of injury evoked by radiofrequency ablation [60] showed patterns similar to that observed for cryoinjury.…”

Section: Mechanism Of Cryoinjurymentioning

confidence: 59%

Characterization of cryoinjury-induced infarction with manganese-and gadolinium-enhanced MRI and optical spectroscopy in pig hearts

Yang

Sun

Gervai

et al. 2010

Magnetic Resonance Imaging

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Section: Mechanism Of Cryoinjurymentioning

confidence: 59%

Characterization of cryoinjury-induced infarction with manganese-and gadolinium-enhanced MRI and optical spectroscopy in pig hearts

Yang

Sun

Gervai

et al. 2010

Magnetic Resonance Imaging

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“…6 Radiofrequency ablation lesions may be visualized after ablation to assess the extent of myocardial injury. 7,8 Furthermore, MRIs acquired at the time of the procedure provide accurate representations of the true anatomy and are, by definition, registered without the use of any fiducial structures because the images and navigational data are acquired in the same coordinate frame. High-speed MRI has already been successfully used to navigate catheters through the body and cardiac chambers and has been shown to be accurate enough to perform transseptal puncture and stenting of aortic coarctation.…”

Section: Clinical Perspective P 862mentioning

confidence: 99%

Electroanatomic Mapping of the Left Ventricle in a Porcine Model of Chronic Myocardial Infarction With Magnetic Resonance–Based Catheter Tracking

et al. 2008

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Background-X-ray fluoroscopy constitutes the fundamental imaging modality for catheter visualization during interventional electrophysiology procedures. The minimal tissue discriminative capability of fluoroscopy is mitigated in part by the use of electroanatomic mapping systems and enhanced by the integration of preacquired 3-dimensional imaging of the heart with computed tomographic or magnetic resonance (MR) imaging. A more ideal paradigm might be to use intraprocedural MR imaging to directly image and guide catheter mapping procedures. Methods and Results-An MR imaging-based electroanatomic mapping system was designed to assess the feasibility of navigating catheters to the left ventricle in vivo using MR tracking of microcoils incorporated into the catheters, measuring intracardiac ventricular electrograms, and integrating this information with 3-dimensional MR angiography and myocardial delayed enhancement images to allow ventricular substrate mapping. In all animals (4 normal, and 10 chronically infarcted swine), after transseptal puncture under fluoroscopic guidance, catheters were successfully navigated to the left ventricle with MR tracking (13 to 15 frames per second) by both transseptal and retrograde aortic approaches. Electrogram artifacts related to the MR imaging gradient pulses were successfully removed with analog and digital signal processing. In all animals, it was possible to map the entire left ventricle and to project electrogram voltage amplitude maps to identify the scarred myocardium.

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“…Further, EAM is associated with a risk of incorrectly identify areas of low voltage due to poor contact. 35,36 Delayed enhancement MRI (DE-MRI) and multidetector CT (MDCT) imaging have emerged as valuable adjunctive techniques that may overcome some of the limitations of using EAM in isolation. As is the case in AF patients, DE-MRI and MDCT images can be integrated with EAM maps.…”

Section: Advances In Imaging Techniques For Vt Ablationmentioning

confidence: 99%

New Ablation Technologies and Techniques

Mahida

Berte

Yamashita

et al. 2014

Arrhythmia &Amp; Electrophysiology Review

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Since the first catheter ablation for cardiac arrhythmia more than three decades ago, ablation technology has continually evolved at a rapid pace. Much of the early progress in the field was made in ablation of supraventricular tachycardias. Following a seminal study from Haïssaguerre et al. 1 in 1998, which demonstrated that pulmonary vein triggers are important sources of atrial fibrillation (AF), the approach to management of AF underwent a revolution. Electrical isolation of pulmonary veins (PVs) using catheter ablation became an established therapeutic strategy in patients with paroxysmal AF. During subsequent years, the role of ablation in AF expanded, and more extensive strategies involving ablation of non-pulmonary vein triggers and modification of the left atrial substrate were demonstrated to be effective, even in persistent forms of AF. New Technologies and Techniques for AF AblationCurrently, the most widely used technique for PV isolation involves delivery of point-by-point ablation lesions around the circumference of the vein. A number of different variations to the approach have been developed. During the early stages of PV isolation, a 'segmental approach' which involved targeting the earliest PV potentials at the ostium of the PV was commonly used. Due to high reconnection rates and the risk of PV stenosis, the technique has progressively been modified and the prevailing technique involves circumferential antral ablation to achieve PV isolation. AbstractCatheter ablation is an established treatment strategy for a range of different cardiac arrhythmias. Over the past decade two major areas of expansion have been ablation of atrial fibrillation (AF) and ventricular tachycardia (VT) in the context of structurally abnormal hearts. In parallel with the expanding role of catheter ablation for AF and VT, multiple novel technologies have been developed which aim to increase safety and procedural success. Areas of development include novel catheter designs, novel navigation technologies and higher resolution imaging techniques. The aim of the present review is to provide an overview of novel developments in AF ablation and VT ablation in patients with of structural cardiac diseases.

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Characterization of Radiofrequency Ablation Lesions With Gadolinium-Enhanced Cardiovascular Magnetic Resonance Imaging

Cited by 166 publications

References 29 publications

Characterization of cryoinjury-induced infarction with manganese-and gadolinium-enhanced MRI and optical spectroscopy in pig hearts

Characterization of cryoinjury-induced infarction with manganese-and gadolinium-enhanced MRI and optical spectroscopy in pig hearts

Electroanatomic Mapping of the Left Ventricle in a Porcine Model of Chronic Myocardial Infarction With Magnetic Resonance–Based Catheter Tracking

New Ablation Technologies and Techniques

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