Study Results
Results pending
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
Recruitment Status
COMPLETED
Clinical Phase
NA
Total Enrollment
16 participants
Study Classification
INTERVENTIONAL
Study Start Date
2014-04-30
Study Completion Date
2020-01-18
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
This study will evaluate the feasibility of visualization and characterization of arrhythmia ablation lesions by MRI immediately following standard ablation techniques. The appearance of the ablation lesion will be correlated with clinical outcomes and risk of arrhythmia recurrence.
Related Clinical Trials
Explore similar clinical trials based on study characteristics and research focus.
Assessment Of MRI In Patients With Implanted Cardiac Devices
NCT02815384
Arrhythmias, Cardiac
WITHDRAWN
Patient Registry Of Magnetic Resonance Imaging in Non-Approved DEvices
NCT03081364
Magnetic Field Exposure
COMPLETED
Pilot Study of Cardiac MR in Patients With Muscular Dystrophy
NCT02921321
Muscular Dystrophies
Cardiac Fibrosis
Genetic Diseases, Inborn
+1 more
COMPLETED
Validation of Thermometric Cardiac Imaging by MRI
NCT03031587
Cardiac MRI
COMPLETED
NA
Sparsity-based Magnetic Resonance Imaging of Cardiac Arrhythmias
NCT02741180
Cardiac Arrythmias
SUSPENDED
NA
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Children's National Heart Institute (CNHI) with major contractual support from the National Institutes of Health / National Heart, Lung and Blood Institute has installed a combined X-ray / Magnetic Resonance Imaging cardiac catheterization lab suite allowing for experts in the fields of cardiac MRI, interventional cardiac MRI and clinical pediatric interventional electrophysiology to work together to make substantial advancements in the development of novel techniques and applications to reach the goal of improved survival and care for the congenital heart disease population. The CNHI X-ray/MRI suite will allow for streamlined transfer of patients from fluoroscopy directly to the MRI scanner under the same sedation thereby allowing for immediate post procedure imaging and minimizing risk to the patient.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Ventricular Tachycardia
Cardiac Arrhythmia
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
Allocation Method
NA
Intervention Model
SINGLE_GROUP
Primary Study Purpose
DIAGNOSTIC
Blinding Strategy
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
MRI scan
Post ablation MRI scan will be performed for all subjects who are clinically stable.
Group Type
OTHER
MRI scan
Intervention Type
OTHER
Following the clinically indicated cardiac ablation procedure, a post ablation MRI scan will be performed.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
MRI scan
Following the clinically indicated cardiac ablation procedure, a post ablation MRI scan will be performed.
Intervention Type
OTHER
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
* Written informed consent from any patient willing to participate who is undergoing an electrophysiology study with potential for arrhythmia ablation
* Written informed assent, if applicable
* Written informed assent, if applicable
Exclusion Criteria
* Women who are pregnant
* Women who are nursing and who do not plan to discard breast milk for 24 hours
* Patients with a contraindication to MRI scanning will be excluded. These contraindications include patients with the following devices:
* Central nervous system aneurysm clips
* Implanted neural stimulator
* Implanted cardiac pacemaker or defibrillator which are not MR safe or MR conditional according to the manufacturer
* Cochlear implant
* Ocular foreign body (e.g. metal shavings)
* Implanted Insulin pump
* Metal shrapnel or bullet.
* Any intracardiac or intravascular device that is not MR safe or MR conditional according to the manufacturer based on both material and timing of device placement
* Women who are nursing and who do not plan to discard breast milk for 24 hours
* Patients with a contraindication to MRI scanning will be excluded. These contraindications include patients with the following devices:
* Central nervous system aneurysm clips
* Implanted neural stimulator
* Implanted cardiac pacemaker or defibrillator which are not MR safe or MR conditional according to the manufacturer
* Cochlear implant
* Ocular foreign body (e.g. metal shavings)
* Implanted Insulin pump
* Metal shrapnel or bullet.
* Any intracardiac or intravascular device that is not MR safe or MR conditional according to the manufacturer based on both material and timing of device placement
Eligible Sex
ALL
Accepts Healthy Volunteers
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
National Institutes of Health (NIH)
NIH
Sponsor Role
collaborator
Children's National Research Institute
OTHER
Sponsor Role
lead
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Charles Berul
MD
Responsibility Role
PRINCIPAL_INVESTIGATOR
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Charles Berul, MD
Role: PRINCIPAL_INVESTIGATOR
Children's National Research Institute
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
Children's National Health System
Washington D.C., District of Columbia, United States
Site Status
Countries
Review the countries where the study has at least one active or historical site.
United States
References
Explore related publications, articles, or registry entries linked to this study.
Mondesert B, Abadir S, Khairy P. Arrhythmias in adult congenital heart disease: the year in review. Curr Opin Cardiol. 2013 May;28(3):354-9. doi: 10.1097/HCO.0b013e32835fb7c2.
Reference Type
BACKGROUND
Yap SC, Harris L, Silversides CK, Downar E, Chauhan VS. Outcome of intra-atrial re-entrant tachycardia catheter ablation in adults with congenital heart disease: negative impact of age and complex atrial surgery. J Am Coll Cardiol. 2010 Nov 2;56(19):1589-96. doi: 10.1016/j.jacc.2010.04.061.
Reference Type
BACKGROUND
Melby SJ, Lee AM, Zierer A, Kaiser SP, Livhits MJ, Boineau JP, Schuessler RB, Damiano RJ Jr. Atrial fibrillation propagates through gaps in ablation lines: implications for ablative treatment of atrial fibrillation. Heart Rhythm. 2008 Sep;5(9):1296-301. doi: 10.1016/j.hrthm.2008.06.009. Epub 2008 Jun 10.
Reference Type
BACKGROUND
Reddy VY, Schmidt EJ, Holmvang G, Fung M. Arrhythmia recurrence after atrial fibrillation ablation: can magnetic resonance imaging identify gaps in atrial ablation lines? J Cardiovasc Electrophysiol. 2008 Apr;19(4):434-7. doi: 10.1111/j.1540-8167.2007.01055.x. Epub 2007 Dec 20.
Reference Type
BACKGROUND
Ratnayaka K, Faranesh AZ, Hansen MS, Stine AM, Halabi M, Barbash IM, Schenke WH, Wright VJ, Grant LP, Kellman P, Kocaturk O, Lederman RJ. Real-time MRI-guided right heart catheterization in adults using passive catheters. Eur Heart J. 2013 Feb;34(5):380-9. doi: 10.1093/eurheartj/ehs189. Epub 2012 Aug 1.
Reference Type
BACKGROUND
Razavi R, Hill DL, Keevil SF, Miquel ME, Muthurangu V, Hegde S, Rhode K, Barnett M, van Vaals J, Hawkes DJ, Baker E. Cardiac catheterisation guided by MRI in children and adults with congenital heart disease. Lancet. 2003 Dec 6;362(9399):1877-82. doi: 10.1016/S0140-6736(03)14956-2.
Reference Type
BACKGROUND
Nazarian S, Kolandaivelu A, Zviman MM, Meininger GR, Kato R, Susil RC, Roguin A, Dickfeld TL, Ashikaga H, Calkins H, Berger RD, Bluemke DA, Lardo AC, Halperin HR. Feasibility of real-time magnetic resonance imaging for catheter guidance in electrophysiology studies. Circulation. 2008 Jul 15;118(3):223-9. doi: 10.1161/CIRCULATIONAHA.107.742452. Epub 2008 Jun 23.
Reference Type
BACKGROUND
Faddis MN, Chen J, Osborn J, Talcott M, Cain ME, Lindsay BD. Magnetic guidance system for cardiac electrophysiology: a prospective trial of safety and efficacy in humans. J Am Coll Cardiol. 2003 Dec 3;42(11):1952-8. doi: 10.1016/j.jacc.2003.07.023.
Reference Type
BACKGROUND
Ector J, De Buck S, Adams J, Dymarkowski S, Bogaert J, Maes F, Heidbuchel H. Cardiac three-dimensional magnetic resonance imaging and fluoroscopy merging: a new approach for electroanatomic mapping to assist catheter ablation. Circulation. 2005 Dec 13;112(24):3769-76. doi: 10.1161/CIRCULATIONAHA.105.565002. Epub 2005 Dec 5.
Reference Type
BACKGROUND
Kettering K, Greil GF, Fenchel M, Kramer U, Weig HJ, Busch M, Miller S, Sieverding L, Laszlo R, Schreieck J. Catheter ablation of atrial fibrillation using the Navx-/Ensite-system and a CT-/MRI-guided approach. Clin Res Cardiol. 2009 May;98(5):285-96. doi: 10.1007/s00392-009-0001-9. Epub 2009 Mar 13.
Reference Type
BACKGROUND
Sasaki T, Miller CF, Hansford R, Yang J, Caffo BS, Zviman MM, Henrikson CA, Marine JE, Spragg D, Cheng A, Tandri H, Sinha S, Kolandaivelu A, Zimmerman SL, Bluemke DA, Tomaselli GF, Berger RD, Calkins H, Halperin HR, Nazarian S. Myocardial structural associations with local electrograms: a study of postinfarct ventricular tachycardia pathophysiology and magnetic resonance-based noninvasive mapping. Circ Arrhythm Electrophysiol. 2012 Dec;5(6):1081-90. doi: 10.1161/CIRCEP.112.970699. Epub 2012 Nov 13.
Reference Type
BACKGROUND
Godeschalk-Slagboom CJ, van der Geest RJ, Zeppenfeld K, Botha CP. Cardiac MRI visualization for ventricular tachycardia ablation. Int J Comput Assist Radiol Surg. 2012 Sep;7(5):753-67. doi: 10.1007/s11548-012-0776-4. Epub 2012 Jul 3.
Reference Type
BACKGROUND
Dickfeld T, Tian J, Ahmad G, Jimenez A, Turgeman A, Kuk R, Peters M, Saliaris A, Saba M, Shorofsky S, Jeudy J. MRI-Guided ventricular tachycardia ablation: integration of late gadolinium-enhanced 3D scar in patients with implantable cardioverter-defibrillators. Circ Arrhythm Electrophysiol. 2011 Apr;4(2):172-84. doi: 10.1161/CIRCEP.110.958744. Epub 2011 Jan 26.
Reference Type
BACKGROUND
Yokokawa M, Mueller G, Bogun F. Role of imaging in ablation therapy of ventricular arrhythmias. Focus on cardiac magnetic resonance imaging. Circ J. 2012;76(6):1292-8. doi: 10.1253/circj.cj-12-0544. Epub 2012 May 22.
Reference Type
BACKGROUND
Nazarian S, Bluemke DA, Halperin HR. Applications of cardiac magnetic resonance in electrophysiology. Circ Arrhythm Electrophysiol. 2009 Feb;2(1):63-71. doi: 10.1161/CIRCEP.108.811562.
Reference Type
BACKGROUND
Mahnkopf C, Halbfass P, Turschner O, Brachmann J. [Use of cardiac MRI in the field of electrophysiology. Present status and future aspects]. Herzschrittmacherther Elektrophysiol. 2012 Dec;23(4):275-80. doi: 10.1007/s00399-012-0238-2. Epub 2012 Nov 7. German.
Reference Type
BACKGROUND
Kleinerman RA. Cancer risks following diagnostic and therapeutic radiation exposure in children. Pediatr Radiol. 2006 Sep;36 Suppl 2(Suppl 2):121-5. doi: 10.1007/s00247-006-0191-5.
Reference Type
BACKGROUND
Andreassi MG, Ait-Ali L, Botto N, Manfredi S, Mottola G, Picano E. Cardiac catheterization and long-term chromosomal damage in children with congenital heart disease. Eur Heart J. 2006 Nov;27(22):2703-8. doi: 10.1093/eurheartj/ehl014. Epub 2006 May 22.
Reference Type
BACKGROUND
Beels L, Bacher K, De Wolf D, Werbrouck J, Thierens H. gamma-H2AX foci as a biomarker for patient X-ray exposure in pediatric cardiac catheterization: are we underestimating radiation risks? Circulation. 2009 Nov 10;120(19):1903-9. doi: 10.1161/CIRCULATIONAHA.109.880385. Epub 2009 Oct 26.
Reference Type
BACKGROUND
Lima JA, Desai MY. Cardiovascular magnetic resonance imaging: current and emerging applications. J Am Coll Cardiol. 2004 Sep 15;44(6):1164-71. doi: 10.1016/j.jacc.2004.06.033.
Reference Type
BACKGROUND
Gupta S, Desjardins B, Baman T, Ilg K, Good E, Crawford T, Oral H, Pelosi F, Chugh A, Morady F, Bogun F. Delayed-enhanced MR scar imaging and intraprocedural registration into an electroanatomical mapping system in post-infarction patients. JACC Cardiovasc Imaging. 2012 Feb;5(2):207-10. doi: 10.1016/j.jcmg.2011.08.021.
Reference Type
BACKGROUND
Obeyesekere MN. MR scar imaging and intraprocedural registration into an electroanatomic mapping system in post-MI patients. JACC Cardiovasc Imaging. 2012 Aug;5(8):854; author reply 854-5. doi: 10.1016/j.jcmg.2012.05.010. No abstract available.
Reference Type
BACKGROUND
Dickfeld T, Kato R, Zviman M, Lai S, Meininger G, Lardo AC, Roguin A, Blumke D, Berger R, Calkins H, Halperin H. Characterization of radiofrequency ablation lesions with gadolinium-enhanced cardiovascular magnetic resonance imaging. J Am Coll Cardiol. 2006 Jan 17;47(2):370-8. doi: 10.1016/j.jacc.2005.07.070.
Reference Type
BACKGROUND
Lardo AC, McVeigh ER, Jumrussirikul P, Berger RD, Calkins H, Lima J, Halperin HR. Visualization and temporal/spatial characterization of cardiac radiofrequency ablation lesions using magnetic resonance imaging. Circulation. 2000 Aug 8;102(6):698-705. doi: 10.1161/01.cir.102.6.698.
Reference Type
BACKGROUND
Ranjan R, Kholmovski EG, Blauer J, Vijayakumar S, Volland NA, Salama ME, Parker DL, MacLeod R, Marrouche NF. Identification and acute targeting of gaps in atrial ablation lesion sets using a real-time magnetic resonance imaging system. Circ Arrhythm Electrophysiol. 2012 Dec;5(6):1130-5. doi: 10.1161/CIRCEP.112.973164. Epub 2012 Oct 15.
Reference Type
BACKGROUND
Ranjan R, Kato R, Zviman MM, Dickfeld TM, Roguin A, Berger RD, Tomaselli GF, Halperin HR. Gaps in the ablation line as a potential cause of recovery from electrical isolation and their visualization using MRI. Circ Arrhythm Electrophysiol. 2011 Jun;4(3):279-86. doi: 10.1161/CIRCEP.110.960567. Epub 2011 Apr 14.
Reference Type
BACKGROUND
Ganesan AN, Selvanayagam JB, Mahajan R, Grover S, Nayyar S, Brooks AG, Finnie J, Sunnarborg D, Lloyd T, Chakrabarty A, Abed HS, Sanders P. Mapping and ablation of the pulmonary veins and cavo-tricuspid isthmus with a magnetic resonance imaging-compatible externally irrigated ablation catheter and integrated electrophysiology system. Circ Arrhythm Electrophysiol. 2012 Dec;5(6):1136-42. doi: 10.1161/CIRCEP.112.974436. Epub 2012 Oct 16.
Reference Type
BACKGROUND
Vergara GR, Vijayakumar S, Kholmovski EG, Blauer JJ, Guttman MA, Gloschat C, Payne G, Vij K, Akoum NW, Daccarett M, McGann CJ, Macleod RS, Marrouche NF. Real-time magnetic resonance imaging-guided radiofrequency atrial ablation and visualization of lesion formation at 3 Tesla. Heart Rhythm. 2011 Feb;8(2):295-303. doi: 10.1016/j.hrthm.2010.10.032. Epub 2010 Oct 27.
Reference Type
BACKGROUND
Nordbeck P, Beer M, Kostler H, Ladd ME, Quick HH, Bauer WR, Ritter O. Cardiac catheter ablation under real-time magnetic resonance guidance. Eur Heart J. 2012 Aug;33(15):1977. doi: 10.1093/eurheartj/ehs139. Epub 2012 Jun 7. No abstract available.
Reference Type
BACKGROUND
Ozgun M, Maintz D, Bunck AC, Monnig G, Eckardt L, Wasmer K, Heindel W, Botnar RM, Kirchhof P. Right atrial scar detection after catheter ablation: Comparison of 2D and high spatial resolution 3D-late enhancement magnetic resonance imaging. Acad Radiol. 2011 Apr;18(4):488-94. doi: 10.1016/j.acra.2010.12.004. Epub 2011 Jan 28.
Reference Type
BACKGROUND
Arujuna A, Karim R, Caulfield D, Knowles B, Rhode K, Schaeffter T, Kato B, Rinaldi CA, Cooklin M, Razavi R, O'Neill MD, Gill J. Acute pulmonary vein isolation is achieved by a combination of reversible and irreversible atrial injury after catheter ablation: evidence from magnetic resonance imaging. Circ Arrhythm Electrophysiol. 2012 Aug 1;5(4):691-700. doi: 10.1161/CIRCEP.111.966523. Epub 2012 May 31.
Reference Type
BACKGROUND
Kiringoda R, Thurm AE, Hirschtritt ME, Koziol D, Wesley R, Swedo SE, O'Grady NP, Quezado ZM. Risks of propofol sedation/anesthesia for imaging studies in pediatric research: eight years of experience in a clinical research center. Arch Pediatr Adolesc Med. 2010 Jun;164(6):554-60. doi: 10.1001/archpediatrics.2010.75.
Reference Type
BACKGROUND
Niendorf HP, Alhassan A, Geens VR, Clauss W. Safety review of gadopentetate dimeglumine. Extended clinical experience after more than five million applications. Invest Radiol. 1994 Jun;29 Suppl 2:S179-82. doi: 10.1097/00004424-199406001-00059. No abstract available.
Reference Type
BACKGROUND
Haustein J, Laniado M, Niendorf HP, Louton T, Beck W, Planitzer J, Schoffel M, Reiser M, Kaiser W, Schorner W, et al. Triple-dose versus standard-dose gadopentetate dimeglumine: a randomized study in 199 patients. Radiology. 1993 Mar;186(3):855-60. doi: 10.1148/radiology.186.3.8430199.
Reference Type
BACKGROUND
Niendorf HP, Dinger JC, Haustein J, Cornelius I, Alhassan A, Clauss W. Tolerance data of Gd-DTPA: a review. Eur J Radiol. 1991 Jul-Aug;13(1):15-20. doi: 10.1016/0720-048x(91)90049-2.
Reference Type
BACKGROUND
Niendorf HP, Haustein J, Cornelius I, Alhassan A, Clauss W. Safety of gadolinium-DTPA: extended clinical experience. Magn Reson Med. 1991 Dec;22(2):222-8; discussion 229-32. doi: 10.1002/mrm.1910220212.
Reference Type
BACKGROUND
Niendorf HP, Haustein J, Louton T, Beck W, Laniado M. Safety and tolerance after intravenous administration of 0.3 mmol/kg Gd-DTPA. Results of a randomized, controlled clinical trial. Invest Radiol. 1991 Nov;26 Suppl 1:S221-3; discussion S232-5. doi: 10.1097/00004424-199111001-00075. No abstract available.
Reference Type
BACKGROUND
Dillman JR, Ellis JH, Cohan RH, Strouse PJ, Jan SC. Frequency and severity of acute allergic-like reactions to gadolinium-containing i.v. contrast media in children and adults. AJR Am J Roentgenol. 2007 Dec;189(6):1533-8. doi: 10.2214/AJR.07.2554.
Reference Type
BACKGROUND
Sundgren PC, Leander P. Is administration of gadolinium-based contrast media to pregnant women and small children justified? J Magn Reson Imaging. 2011 Oct;34(4):750-7. doi: 10.1002/jmri.22413.
Reference Type
BACKGROUND
Deo A, Fogel M, Cowper SE. Nephrogenic systemic fibrosis: a population study examining the relationship of disease development to gadolinium exposure. Clin J Am Soc Nephrol. 2007 Mar;2(2):264-7. doi: 10.2215/CJN.03921106. Epub 2007 Feb 7.
Reference Type
BACKGROUND
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
contract
Identifier Type: OTHER
Identifier Source: secondary_id
4065
Identifier Type: -
Identifier Source: org_study_id
More Related Trials
Additional clinical trials that may be relevant based on similarity analysis.
High-resolution MRI of Atrial Fibrillation Patients Prior to Focal Impulse and Rotor Modulation (FIRM) Ablation
NCT03444337
UNKNOWN
Technical Development of Interventional Cardiovascular Magnetic Resonance Imaging in Normal Volunteers
NCT00720460
TERMINATED
A Study to Evaluate Non-significant Risk Operation Magnetic Resonance Imaging for MRI Guided Ablation
NCT04880226
RECRUITING
NA
Study Evaluating the Use of MRI on CMS Patients
NCT02513056
COMPLETED
Safety of Magnetic Resonance Imaging With Patients Who Have Mixed Lead Cardiac Implantable Electronic Devices
NCT07155135
COMPLETED
Technical Development of Cardiovascular Magnetic Resonance Imaging
NCT00027170
COMPLETED
To Validate the Specific Patterns of Magnetocardiography, a Non-invasive Non-contact Examination for Patients With Ischemic Heart Disease or Cardiac Arrhythmia
NCT00965614
AVAILABLE
Magnetic Resonance Imaging Development for High Resolution Atrial Structural and Functional Characterization
NCT06617624
NOT_YET_RECRUITING
Contribution of Computed Tomography and Cardiac-MRI in Atrial Fibrillation Ablation
NCT04281329
RECRUITING
Magnetic Resonance Imaging in Myocarditis
NCT02177630
COMPLETED
Heart Imaging in Children With Muscular Dystrophy
NCT01633242
TERMINATED
Safety and Clinical Outcomes of Magnetic Resonance Imaging in Patients With Cardiac Implantable Electrical Devices
NCT03016429
COMPLETED
Magnetic Resonance Imaging (MRI) Viability: Comparison of Myocardial Viability by Positron Emission Tomography and MRI
NCT00166179
COMPLETED
Developing Methods for Reconstructing Electrical Heart Activity
NCT03947021
UNKNOWN
NA
The Use of CT to Identify Damaged Heart Muscle in Patients Undergoing Ventricular Tachycardia Ablation.
NCT00583284
TERMINATED
Magnetic Resonance Imaging of the Blood Vessels of the Heart
NCT00001638
COMPLETED
Creation of an ECG Database in 3T MRI With Healthy Heart and Several Kind of Cardiac Disease.
NCT02562534
TERMINATED
NA
One More Magnetic Resonance Imaging
NCT02293070
COMPLETED
NA
Study of Blood Flow in Heart Muscle
NCT00001631
COMPLETED
PHASE2
Evaluation of the Incidence of Cerebral Lesions Post Pulmonary Vein Ablation Catheter (PVAC)
NCT01520532
COMPLETED
NA
Tissue and Metabolic Characterization of Arrhythmogenic Cardiomyopathies by Hybrid PET-MRI Imaging, Impact of the Observed Profiles on the Phenotype and on the Evolution of Cardiomyopathy
NCT05450783
RECRUITING
Evaluating PVI Using CMR
NCT05437549
UNKNOWN
NA
Real-time MRI Right Heart Catheterization Using Passive Catheters
NCT01287026
COMPLETED
PHASE1/PHASE2
MAGNetic QRS-Fragmentation in Patients With Myocardial InfarcTion and Moderately RedUceD Ejection Fraction
NCT01972126
TERMINATED
A Pilot Investigation Detecting Cryoablation Scar by 3D Late Gadolinium Enhancement
NCT02875730
COMPLETED
PHASE4