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Marhabaie S, Delcey M, El Hamrani D, Vaillant F, Ginefri JC, Ozenne V, Abell E, Poirier-Quinot M, Quesson B. Remotely detuned receiver coil for high-resolution interventional cardiac magnetic resonance imaging. Front Cardiovasc Med 2023; 10:1249572. [PMID: 38028485 PMCID: PMC10643167 DOI: 10.3389/fcvm.2023.1249572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Interventional cardiac MRI in the context of the treatment of cardiac arrhythmia requires submillimeter image resolution to precisely characterize the cardiac substrate and guide the catheter-based ablation procedure in real-time. Conventional MRI receiver coils positioned on the thorax provide insufficient signal-to-noise ratio (SNR) and spatial selectivity to satisfy these constraints. Methods A small circular MRI receiver coil was developed and evaluated under different experimental conditions, including high-resolution MRI anatomical and thermometric imaging at 1.5 T. From the perspective of developing a therapeutic MR-compatible catheter equipped with a receiver coil, we also propose alternative remote active detuning techniques of the receiver coil using one or two cables. Theoretical details are presented, as well as simulations and experimental validation. Results Anatomical images of the left ventricle at 170 µm in-plane resolution are provided on ex vivo beating heart from swine using a 2 cm circular receiver coil. Taking advantage of the increase of SNR at its vicinity (up to 35 fold compared to conventional receiver coils), real-time MR-temperature imaging can reach an uncertainty below 0.1°C at the submillimetric spatial resolution. Remote active detuning using two cables has similar decoupling efficiency to conventional on-site decoupling, at the cost of an acceptable decrease in the resulting SNR. Discussion This study shows the potential of small dimension surface coils for minimally invasive therapy of cardiac arrhythmia intraoperatively guided by MRI. The proposed remote decoupling approaches may simplify the construction process and reduce the cost of such single-use devices.
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Affiliation(s)
- Sina Marhabaie
- Laboratoire D'Imagerie Biomédicale Multimodale Paris Saclay, Université Paris-Saclay, CNRS, Inserm, Orsay, France
| | - Marylène Delcey
- Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, Bordeaux, France
- Siemens Healthineers, Saint-Denis, France
| | | | - Fanny Vaillant
- Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, Bordeaux, France
| | - Jean-Christophe Ginefri
- Laboratoire D'Imagerie Biomédicale Multimodale Paris Saclay, Université Paris-Saclay, CNRS, Inserm, Orsay, France
| | - Valéry Ozenne
- Univ. Bordeaux, CNRS, CRMSB, UMR 5536, IHU Liryc, Bordeaux, France
| | - Emma Abell
- Univ. Bordeaux, INSERM, CRCTB, U 1045, IHU Liryc, Bordeaux, France
| | - Marie Poirier-Quinot
- Laboratoire D'Imagerie Biomédicale Multimodale Paris Saclay, Université Paris-Saclay, CNRS, Inserm, Orsay, France
| | - Bruno Quesson
- Univ. Bordeaux, CNRS, CRMSB, UMR 5536, IHU Liryc, Bordeaux, France
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Besler E, Wang YC, Sahakian AV. Real-Time Radiofrequency Ablation Lesion Depth Estimation Using Multi-frequency Impedance With a Deep Neural Network and Tree-Based Ensembles. IEEE Trans Biomed Eng 2019; 67:1890-1899. [PMID: 31675310 DOI: 10.1109/tbme.2019.2950342] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Design and optimization of statistical models for use in methods for estimating radiofrequency ablation (RFA) lesion depths in soft real-time performance. METHODS Using tissue multi-frequency complex electrical impedance data collected from a low-cost embedded system, a deep neural network (NN) and tree-based ensembles (TEs) were trained for estimating the RFA lesion depth via regression. RESULTS Addition of frequency sweep data, previous depth data, and previous RF power state data boosted accuracy of the statistical models. The root mean square errors were 2 mm for NN and 0.5 mm for TEs for previous statistical models and the root mean square errors were 0.4 mm for NN and 0.04 mm for TEs for the statistical models presented in this paper. Simulation ablation performance showed a mean difference against physical measurements of 0.5 ±0.2 mm for the NN-based depth estimation method and 0.7 ±0.4 mm for the TE-based depth estimation method. CONCLUSION The results show that multi-frequency data significantly improves the depth estimation performance of the statistical models. SIGNIFICANCE The RFA lesion depth estimation methods presented in this work achieve millimeter-resolution accuracy with soft real-time performance on an ARMv7-based embedded system for potential translation to clinical RFA technologies.
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Toupin S, Bour P, Lepetit-Coiffé M, Ozenne V, Denis de Senneville B, Schneider R, Vaussy A, Chaumeil A, Cochet H, Sacher F, Jaïs P, Quesson B. Feasibility of real-time MR thermal dose mapping for predicting radiofrequency ablation outcome in the myocardium in vivo. J Cardiovasc Magn Reson 2017; 19:14. [PMID: 28143574 PMCID: PMC5286737 DOI: 10.1186/s12968-017-0323-0] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Accepted: 01/10/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Clinical treatment of cardiac arrhythmia by radiofrequency ablation (RFA) currently lacks quantitative and precise visualization of lesion formation in the myocardium during the procedure. This study aims at evaluating thermal dose (TD) imaging obtained from real-time magnetic resonance (MR) thermometry on the heart as a relevant indicator of the thermal lesion extent. METHODS MR temperature mapping based on the Proton Resonance Frequency Shift (PRFS) method was performed at 1.5 T on the heart, with 4 to 5 slices acquired per heartbeat. Respiratory motion was compensated using navigator-based slice tracking. Residual in-plane motion and related magnetic susceptibility artifacts were corrected online. The standard deviation of temperature was measured on healthy volunteers (N = 5) in both ventricles. On animals, the MR-compatible catheter was positioned and visualized in the left ventricle (LV) using a bSSFP pulse sequence with active catheter tracking. Twelve MR-guided RFA were performed on three sheep in vivo at various locations in left ventricle (LV). The dimensions of the thermal lesions measured on thermal dose images, on 3D T1-weighted (T1-w) images acquired immediately after the ablation and at gross pathology were correlated. RESULTS MR thermometry uncertainty was 1.5 °C on average over more than 96% of the pixels covering the left and right ventricles, on each volunteer. On animals, catheter repositioning in the LV with active slice tracking was successfully performed and each ablation could be monitored in real-time by MR thermometry and thermal dosimetry. Thermal lesion dimensions on TD maps were found to be highly correlated with those observed on post-ablation T1-w images (R = 0.87) that also correlated (R = 0.89) with measurements at gross pathology. CONCLUSIONS Quantitative TD mapping from real-time rapid CMR thermometry during catheter-based RFA is feasible. It provides a direct assessment of the lesion extent in the myocardium with precision in the range of one millimeter. Real-time MR thermometry and thermal dosimetry may improve safety and efficacy of the RFA procedure by offering a reliable indicator of therapy outcome during the procedure.
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Affiliation(s)
- Solenn Toupin
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Siemens Healthineers France, F-93210 Saint-Denis, France
| | - Pierre Bour
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Image Guided Therapy, F-33600 Pessac, France
| | | | - Valéry Ozenne
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
| | | | | | - Alexis Vaussy
- Siemens Healthineers France, F-93210 Saint-Denis, France
| | - Arnaud Chaumeil
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Electrophysiology and Ablation Unit, Bordeaux University Hospital (CHU), F-33600 Pessac, France
| | - Hubert Cochet
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Electrophysiology and Ablation Unit, Bordeaux University Hospital (CHU), F-33600 Pessac, France
| | - Frédéric Sacher
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Electrophysiology and Ablation Unit, Bordeaux University Hospital (CHU), F-33600 Pessac, France
| | - Pierre Jaïs
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
- Electrophysiology and Ablation Unit, Bordeaux University Hospital (CHU), F-33600 Pessac, France
| | - Bruno Quesson
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Foundation Bordeaux University, F-33600 Pessac-Bordeaux, France
- Centre de recherche Cardio-Thoracique de Bordeaux, INSERM, U1045, F-33000 Bordeaux, France
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Ertürk MA, Sathyanarayana Hegde S, Bottomley PA. Radiofrequency Ablation, MR Thermometry, and High-Spatial-Resolution MR Parametric Imaging with a Single, Minimally Invasive Device. Radiology 2016; 281:927-932. [PMID: 27228330 DOI: 10.1148/radiol.2016151447] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To develop and demonstrate in vitro and in vivo a single interventional magnetic resonance (MR)-active device that integrates the functions of precise identification of a tissue site with the delivery of radiofrequency (RF) energy for ablation, high-spatial-resolution thermal mapping to monitor thermal dose, and quantitative MR imaging relaxometry to document ablation-induced tissue changes for characterizing ablated tissue. Materials and Methods All animal studies were approved by the institutional animal care and use committee. A loopless MR imaging antenna composed of a tuned microcable either 0.8 or 2.2 mm in diameter with an extended central conductor was switched between a 3-T MR imaging unit and an RF power source to monitor and perform RF ablation in bovine muscle and human artery samples in vitro and in rabbits in vivo. High-spatial-resolution (250-300-μm) proton resonance frequency shift MR thermometry was interleaved with ablations. Quantitative spin-lattice (T1) and spin-spin (T2) relaxation time MR imaging mapping was performed before and after ablation. These maps were compared with findings from gross tissue examination of the region of ablated tissue after MR imaging. Results High-spatial-resolution MR imaging afforded temperature mapping in less than 8 seconds for monitoring ablation temperatures in excess of 85°C delivered by the same device. This produced irreversible thermal injury and necrosis. Quantitative MR imaging relaxation time maps demonstrated up to a twofold variation in mean regional T1 and T2 after ablation versus before ablation. Conclusion A simple, integrated, minimally invasive interventional probe that provides image-guided therapy delivery, thermal mapping of dose, and detection of ablation-associated MR imaging parametric changes was developed and demonstrated. With this single-device approach, coupling-related safety concerns associated with multiple conductor approaches were avoided. © RSNA, 2016 Online supplemental material is available for this article.
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Affiliation(s)
- M Arcan Ertürk
- From the Department of Radiology, Johns Hopkins University, 600 N Wolfe St, Park 310, Baltimore, MD 21287
| | | | - Paul A Bottomley
- From the Department of Radiology, Johns Hopkins University, 600 N Wolfe St, Park 310, Baltimore, MD 21287
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5
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Kardoulaki EM, Syms RRA, Young IR, Choonee K, Rea M, Gedroyc WMW. Optothermal profile of an ablation catheter with integrated microcoil for MR-thermometry during Nd:YAG laser interstitial thermal therapies of the liver—an in-vitro experimental and theoretical study. Med Phys 2016; 42:1389-97. [PMID: 25735293 DOI: 10.1118/1.4908225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE Flexible microcoils integrated with ablation catheters can improve the temperature accuracy during local MR-thermometry in Nd:YAG laser interstitial thermal therapies. Here, the authors are concerned with obtaining a preliminary confirmation of the clinical utility of the modified catheter. They investigate whether the thin-film substrate and copper tracks of the printed coil inductor affect the symmetry of the thermal profile, and hence of the lesion produced. METHODS Transmission spectroscopy in the near infrared was performed to test for the attenuation at 1064 nm through the 25 μm thick Kapton substrate of the microcoil. The radial transmission profile of an infrared high-power, light emitting diode with >80% normalized power at 1064 nm was measured through a cross section of the modified applicator to assess the impact of the copper inductor on the optical profile. The measurements were performed in air, as well as with the applicator surrounded by two types of scattering media; crystals of NaCl and a layer of liver-mimicking gel phantom. A numerical model based on Huygens-Fresnel principle and finite element simulations, using a commercially available package (COMSOL Multiphysics), were employed to compare with the optical measurements. The impact of the modified optical profile on the thermal symmetry was assessed by examining the high resolution microcoil derived thermal maps from a Nd:YAG laser ablation performed on a liver-mimicking gel phantom. RESULTS Less than 30% attenuation through the Kapton film was verified. Shadowing behind the copper tracks was observed in air and the measured radial irradiation correlated well with the diffraction pattern calculated numerically using the Huygens-Fresnel principle. Both optical experiments and simulations, demonstrate that shadowing is mitigated by the scattering properties of a turbid medium. The microcoil derived thermal maps at the end of a Nd:YAG laser ablation performed on a gel phantom in a 3 T scanner confirm that the modified irradiation pattern does not disrupt the thermal symmetry, even though, unlike tissue, the gel is minimally scattering. CONCLUSIONS The results from this initial assessment indicate that microcoils can be safely integrated with ablation catheters and ensure that the complete necrosis of the liver tumor can still be achieved.
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Affiliation(s)
- Evdokia M Kardoulaki
- Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Richard R A Syms
- Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Ian R Young
- Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Kaushal Choonee
- Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - Marc Rea
- Department of Radiology, Imperial College Healthcare NHS Trust, Paddington, London W2 1NY, United Kingdom
| | - Wladyslaw M W Gedroyc
- Department of Radiology, Imperial College Healthcare NHS Trust, Paddington, London W2 1NY, United Kingdom
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Ozenne V, Toupin S, Bour P, de Senneville BD, Lepetit-Coiffé M, Boissenin M, Benois-Pineau J, Hansen MS, Inati SJ, Govari A, Jaïs P, Quesson B. Improved cardiac magnetic resonance thermometry and dosimetry for monitoring lesion formation during catheter ablation. Magn Reson Med 2016; 77:673-683. [PMID: 26899165 DOI: 10.1002/mrm.26158] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 01/14/2016] [Accepted: 01/18/2016] [Indexed: 12/12/2022]
Abstract
PURPOSE A new real-time MR-thermometry pipeline was developed to measure multiple temperature images per heartbeat with 1.6×1.6×3 mm3 spatial resolution. The method was evaluated on 10 healthy volunteers and during radiofrequency ablation (RFA) in sheep. METHODS Multislice, electrocardiogram-triggered, echo-planar imaging was combined with parallel imaging, under free breathing conditions. In-plane respiratory motion was corrected on magnitude images by an optical flow algorithm. Motion-related susceptibility artifacts were compensated on phase images by an algorithm based on Principal Component Analysis. Correction of phase drift and temporal filter were included in the pipeline implemented in the Gadgetron framework. Contact electrograms were recorded simultaneously with MR thermometry by an MR-compatible ablation catheter. RESULTS The temporal standard deviation of temperature in the left ventricle remained below 2 °C on each volunteer. In sheep, focal heated regions near the catheter tip were observed on temperature images (maximal temperature increase of 38 °C) during RFA, with contact electrograms of acceptable quality. Thermal lesion dimensions at gross pathology were in agreement with those observed on thermal dose images. CONCLUSION This fully automated MR thermometry pipeline (five images/heartbeat) provides direct assessment of lesion formation in the heart during catheter-based RFA, which may improve treatment of cardiac arrhythmia by ablation. Magn Reson Med 77:673-683, 2017. © 2016 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Valéry Ozenne
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Inserm U1045 Centre de Recherche Cardio-Thoracique de Bordeaux, Université de Bordeaux, Bordeaux, France
| | - Solenn Toupin
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Inserm U1045 Centre de Recherche Cardio-Thoracique de Bordeaux, Université de Bordeaux, Bordeaux, France.,Siemens Healthcare France, Saint Denis, France
| | - Pierre Bour
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Inserm U1045 Centre de Recherche Cardio-Thoracique de Bordeaux, Université de Bordeaux, Bordeaux, France
| | | | | | - Manuel Boissenin
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Inserm U1045 Centre de Recherche Cardio-Thoracique de Bordeaux, Université de Bordeaux, Bordeaux, France
| | | | - Michael S Hansen
- Magnetic Resonance Technology Program, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Souheil J Inati
- National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland, USA
| | | | - Pierre Jaïs
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Centre Hospitalier Universitaire de Bordeaux, Bordeaux, France
| | - Bruno Quesson
- Institut Hospitalo-Universitaire, Liryc Institut de Rythmologie et Modélisation Cardiaque, Fondation Bordeaux Université, Bordeaux, France.,Inserm U1045 Centre de Recherche Cardio-Thoracique de Bordeaux, Université de Bordeaux, Bordeaux, France
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Han FT, Marrouche N. An atrial fibrosis-based approach for atrial fibrillation ablation. Future Cardiol 2015; 11:673-81. [DOI: 10.2217/fca.15.65] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Since the emergence of atrial fibrillation (AF) ablation as a reliable method of restoring sinus rhythm, various approaches have been used to improve the efficacy while maximizing the safety of ablation. A major hurdle to optimizing outcomes for AF ablation has been the failure to recognize that the substrate of the individual patient plays a significant role in optimizing AF treatment. Using delayed-enhancement MRI for the detection of left atrial fibrosis, our group has been able to correlate these structural remodeling changes to outcomes of stroke, AF recurrence and congestive heart failure. This has provided us with information to optimize care of our AF patients based on screening for a fibrotic atrial cardiomyopathy, for which AF is the arrhythmic manifestation. By employing an MRI-guided approach for AF ablation, we have been able to optimize AF management and enhance the delivery of personalized medicine for our patients.
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Affiliation(s)
- Frederick T Han
- Division of Cardiology, Section of Cardiac Electrophysiology, University of Utah Health Sciences Center, 30 North 1900 East, Room 4A-100 SOM, Salt Lake City, UT 84132, USA
| | - Nassir Marrouche
- Division of Cardiology, Section of Cardiac Electrophysiology, University of Utah Health Sciences Center, 30 North 1900 East, Room 4A-100 SOM, Salt Lake City, UT 84132, USA
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Schmidt EJ. Magnetic Resonance Imaging-Guided Cardiac Interventions. Magn Reson Imaging Clin N Am 2015; 23:563-77. [PMID: 26499275 DOI: 10.1016/j.mric.2015.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Performing intraoperative cardiovascular procedures inside an MR imaging scanner can potentially provide substantial advantage in clinical outcomes by reducing the risk and increasing the success rate relative to the way such procedures are performed today, in which the primary surgical guidance is provided by X-ray fluoroscopy, by electromagnetically tracked intraoperative devices, and by ultrasound. Both noninvasive and invasive cardiologists are becoming increasingly familiar with the capabilities of MR imaging for providing anatomic and physiologic information that is unequaled by other modalities. As a result, researchers began performing animal (preclinical) interventions in the cardiovascular system in the early 1990s.
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Affiliation(s)
- Ehud J Schmidt
- Radiology Department, Brigham and Women's Hospital, 221 Longwood Avenue, Room BRB 34C, Boston, MA 02115, USA.
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Gu J, Hu W, Liu X. The value of magnetic resonance imaging in catheter ablation of atrial fibrillation. Clin Cardiol 2015; 38:190-4. [PMID: 25559278 DOI: 10.1002/clc.22360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 10/13/2014] [Accepted: 10/21/2014] [Indexed: 12/19/2022] Open
Abstract
Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Catheter ablation is now a recognized treatment for those with symptomatic AF refractory to drug therapy. Innovations in magnetic resonance imaging (MRI) have empowered clinicians to improve ablation efficacy while reducing the risk of complications. It is demonstrated that late gadolinium enhancement MRI has additional advantages over modalities such as echocardiography and computed tomography, due to its ability to assess the structural remodeling directly. As a result, MRI has become an indispensable imaging tool to personalize the AF ablation strategy, assess the efficacy and potential complications of AF ablation, and guide the repeat procedure.
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Affiliation(s)
- Jun Gu
- Department of Cardiology, Shanghai Minhang District Central Hospital, Fudan University, Shanghai, People's Republic of China
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Value of Magnetic Resonance Imaging in Guiding Atrial Fibrillation Management. Can J Cardiol 2013; 29:1194-202. [DOI: 10.1016/j.cjca.2013.07.679] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 07/23/2013] [Accepted: 07/23/2013] [Indexed: 01/31/2023] Open
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