HiroshiAshikagaMDPhD

PubMed

• 1 citations
  Cardiac-gated spectroscopic photoacoustic imaging for ablation-induced necrotic lesion visualization.
  Shang Gao, Hiroshi Ashikaga, Masahito Suzuki, Tommaso Mansi, Young-Ho Kim
  Journal of Biophotonics. 2024-10-01
• 16 citations
  Purkinje network and myocardial substrate at the onset of human ventricular fibrillation: implications for catheter ablation.
  Michel Haissaguerre, Ghassen Cheniti, Meleze Hocini, Frederic Sacher, F Daniel Ramirez
  European Heart Journal. 2022-03-21
• 6 citations
  CinE caRdiac magneTic resonAnce to predIct veNTricular arrhYthmia (CERTAINTY).
  Julian Krebs, Tommaso Mansi, Hervé Delingette, Bin Lou, Joao A.C. Lima
  Scientific Reports. 2021-11-22

Journal Articles

• Multimodal examination of atrial fibrillation substrate: correlation of left atrial bipolar voltage using multi-electrode fast automated mapping, point-by-point mappin...  
  Zghaib T, Keramati A, Chrispin J, Huang D, Balouch MA, Ciuffo L, Berger RD, Marine JE, Ashikaga H, Calkins H, Nazarian S, Spragg DD, JACC Clin Electrophysiol, 1/1/2018
• Relation of electrocardiographic left atrial abnormalities to risk of stroke in patients with atrial fibrillation  
  Inoue YY, Ipek EG, Khurram IM, Ciuffo L, Chrispin J, Zimmerman SL, Marine JE, Rickard J, MD; Spragg DD, Nazarian S, Kusano K, Lima JA, Berger RD, Calkins H, Ashikaga H, Am J Cardiol, 1/1/2018
• Is human atrial fibrillation stochastic or deterministic? Insights from missing ordinal patterns and causal entropy-complexity plane analysis  
  Aronis AN, Berger RD, Calkins H, Chrispin J, Marine JE, Spragg DD, Tao S, Tandri T, Ashikaga H, Chaos, 1/1/2018
• Inter-scale information flow as a surrogate for downward causation that maintains spiral waves  
  Ashikaga H, James RG, Chaos, 1/1/2018
• Standard ablation versus MRI-guided ablation in the treatment of ventricular tachycardia  
  Zghaib T, Ipek EG, Hansford R, Ashikaga H, Berger R, Marine JE, Spragg DD, Tandri H, Zimmerman S, Halperin H, Brancato S, Calkins H, Henrikson C, Nazarian S, Circ Arrhythm Electrophysiol, 1/1/2018
• Response by Zghaib et al to Letter Regarding Article, "Standard Ablation Versus Magnetic Resonance Imaging-Guided Ablation in the Treatment of Ventricular Tachycardia"  
  Zghaib T, Ipek EG, Hansford R, Ashikaga H, Berger RD, Marine JE, Spragg DD, Tandri H, Zimmerman SL, Halperin H, Brancato S, Calkins H, Henrikson C, Nazarian S, Circ Arrhythm Electrophysiol, 1/1/2018
• Mechanical dyssynchrony of the left atrium during sinus rhythm is associated with stroke in patients with history of atrial fibrillation  
  Ciuffo LA, Inoue YY, Tao S, Ipek EG, Lima JAC, Nazarian S, Spragg DD, Marine J, Berger RD, Calkins H, Ashikaga H, Eur Heart J Cardiovasc Imaging, 1/1/2018
• Causal scale of rotors in a cardiac system  
  Ashikaga H, Prieto-Castrillo F, Kawakatsu M, Dehghani N, Front Phys, 1/1/2018
• The fibrotic substrate in persistent atrial fibrillation patients: Comparison between predictions from computational modeling and measurements from focal impulse and r...  
  Boyle PM, Hakim JB, Zahid S, Franceschi WH, Murphy MJ, Prakosa A, Aronis KN, Zghaib T, Balouch M, Ipek EG, Chrispin J, Berger RD, Ashikaga H, Marine JE, Calkins H, Naz..., Front Physiol, 1/1/2018
• Increased rates of atrial fibrillation recurrence following pulmonary vein isolation in overweight and obese patients  
  Sivasambu B, Balouch MA, Zghaib T, Bajwa RJ, Chrispin J, Berger RD, Ashikaga H, Nazarian S, Marine JE, Calkins H, Spragg DD, J Cardiovasc Electrophysiol, 1/1/2018
• Impact of number of co-existing rotors and inter-electrode distance on accuracy of rotor localization  
  Aronis KN, Ashikaga H, J Electrocardiol, 1/1/2018
• Current management and clinical outcomes for catheter ablation of atrioventricular nodal re-entrant tachycardia  
  Chrispin J, Misra S, Marine JE, Rickard J, Barth A, Kolandaivelu A, Ashikaga H, Tandri H, Spragg DD, Crosson J, Berger RD, Tomaselli G, Calkins H, Sinha SK, Europace, 1/1/2018
• Hidden structures of information transport underlying spiral wave dynamics  
  Ashikaga H, James RG, Chaos, 1/1/2017
• Impact of rotor temperospatial stability on acute and one-year atrial fibrillation ablation outcomes  
  Balouch M, Gucuk Ipek E, Chrispin J, Bajwa RJ, Zghaib T, Berger RD, Ashikaga H, Nazarian S, Marine JE, Calkins H, Spragg DD, Clin Cardiol, 1/1/2017
• Electrocardiographic strain pattern is associated with left ventricular concentric remodeling, scar, and mortality over 10 years: the Multi-Ethnic Study of Atheroscler...  
  Inoue YY, Soliman EZ, Yoneyama K, Ambale-Venkatesh B, Wu CO, Sparapani R, Bluemke DA, Lima JAC, Ashikaga H, J Am Heart Assoc, 1/1/2017
• Vectors through a cross-sectional image (VCI): A visualization method for four-dimensional motion analysis for cardiac computed tomography  
  Kidoh M, Utsunomiya D, Funama Y, Ashikaga H, Nakaura T, Oda S, Yuki H, Hirata K, Iyama Y, Nagayama Y, Fukui T, Yamashita Y, Taguchi K, J Cardiovasc Comput Tomogr, 1/1/2017
• Impaired left atrial function predicts inappropriate shocks in primary prevention implantable cardioverter-defibrillator candidates  
  Tao S, Ashikaga H, Ciuffo LA, Yoneyama K, Lima JAC, Frank TF, Weiss RG, Tomaselli GF, Wu KC, J Cardiovasc Electrophysiol, 1/1/2017
• HIV and ventricular arrhythmia susceptibility: insights from cardiac patch monitoring  
  Nauffal V, Wu KC, Ashikaga H, Kirk GD, Post WS, J Clin Case Rep, 1/1/2017
• Trends in transesophageal echocardiography use, findings, and clinical outcomes in the era of minimally interrupted anticoagulation for atrial fibrillation ablation  
  Balouch M, Ipek EG, Chrispin J, Bajwa RJ, Zghaib T, Berger RD, Ashikaga H, Calkins H, Nazarian S, Marine JE, Spragg DD, JACC Clin Electrophysiol, 1/1/2017
• Quantifying left atrial structure and function using single-plane tissue-tracking cardiac magnetic resonance  
  Tao S, Ciuffo LA, Lima, JAC, Wu K, Ashikaga H, Magn Reson Imaging, 1/1/2017
• Motion estimation for cardiac functional analysis using two low-dose x-ray computed tomography scans  
  Fung GSK, Ciuffo L, Ashikaga H, Taguchi K, Med Phys, 1/1/2017
• Ablation as targeted perturbation to rewire communication networks of persistent atrial fibrillation  
  Tao S, Way S, Garland J, Chrispin J, Ciuffo, LA, Balouch MA, Nazarian S, Spragg DD, Marine J, Berger RD, Calkins H, Ashikaga H, PLoS One, 1/1/2017
• Electrocardiographic impact of myocardial diffuse fibrosis and scar:MESA (Multi-Ethnic Study of Atherosclerosis)  
  Inoue YY, Ambale-Venkatesh B, Mewton N, Volpe GJ, Ohyama Y, Sharma RK, Wu CO, Liu CY, Bluemke DA, Soliman EZ, Lima JAC, Ashikaga H, Radiology, 1/1/2017
• The association of baseline left atrial structure and function measured with cardiac magnetic resonance and pulmonary vein isolation outcome in patients with drug refr...  
  Habibi M, Lima JA, Ipek EG, Zimmerman SL, Zipunnikov V, Spragg D, Ashikaga H, Rickard J, Marine JE, Berger RD, Calkins H, Nazarian S, Heart Rhythm, 1/1/2016
• Myofiber architecture of the human atria as revealed by sub-millimeter diffusion tensor imaging  
  Pashakhanloo F, Herzka D, Ashikaga H, Mori S, Gai N, Bluemke D, Trayanova N, McVeigh E, Circ Arrhythm Electrophysiol, 1/1/2016
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Books/Book Chapters

• Critical Care Cardiology. (Japanese) 
  Chapter: Chapter 15: Complication of Acute Coronary Syndrome: Tachyarrhythmia. (Japanese) 
  Page 54 - 60Ashikaga H2015
• Critical Care Cardiology. (Japanese) 
  Chapter: Chapter 16: Complication of Acute Coronary Syndrome: Bradyarrhythmia. (Japanese) 
  Page 61 - 70Ashikaga H2015
• Cardiac Electrophysiology: From Cell to Bedside 
  Chapter: Chapter 61: CT and MR Imaging for electrophysiology. 
  Page 595 - 603Ashikaga H, Kolandaivelu A, Tandri H, Nazarian S, Halperin HREditors: Zipes DP and Jalife J.Edition 6th,2014
• Diastology (Japanese) 
  Chapter: Chapter 3: Myofiber orientation and left ventricular mechanics. (Japanese) 
  Page 15 - 22Ashikaga HEditors: Ohki T and Takenaka K.Bunkodo Publishing, Tokyo, Japan2010
• Novel Techniques for Imaging the Heart: Cardiac MR and CT 
  Chapter: Chapter 21: Imaging of myocardial mechanics. 
  Page 328 - 335Ashikaga H, McVeigh EREditors: Di Carli MF and Kwong RY.American Heart Association, Blackwell Publishing, Oxford, England2008
• Interstitial Fibrosis In Heart Failure 
  Chapter: Chapter 17: Prospects for gene therapy for the fibrosed heart: Targeting regulators of extracellular matrix turnover. 
  Page 343 - 354Ashikaga H, Villarreal FJEditors: Villarreal FJ.Springer Science+Business Media, Inc., New York, NY2005
• Molecular Basis of Cardiovascular Disease, A Companion to Braunwald�s Heart Disease 
  Chapter: Chapter 1: Biotechnology and cardiovascular medicine: Recombinant protein therapy. 
  Page 1 - 15Ashikaga H, Ben-Yehuda O, Chien KREditors: Chien KR.W.B. Saunders Company, Philadelphia, PAEdition 2nd,2004
• Molecular Basis of Cardiovascular Disease, A Companion to Braunwald�s Heart Disease 
  Chapter: Chapter 25: Coronary restenosis. 
  Page 455 - 469Ashikaga H, Ben-Yehuda O, Chien KREditors: Chien KR.W.B. Saunders Company, Philadelphia, PAEdition 2nd,2004
• Molecular Basis of Cardiovascular Disease, A Companion to Braunwald�s Heart Disease 
  Chapter: Chapter 28: Blood coagulation and atherothrombosis. 
  Page 498 - 518Ashikaga H, Chien KREditors: Chien KR.W.B. Saunders Company, Philadelphia, PAEdition 2nd,2004
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Abstracts/Posters

• False dyssynchrony: problem with image-based cardiac functional analysis using x-ray computed tomography.
  Kidoh M, Shen Z, Suzuki Y, Ciuffo L, Ashikaga H, Fung GSK, Otake Y, Zimmerman SL, Lima JAC, Higuchi T, Lee O, Sato Y, Becker LC, Fishman EK, Taguchi K, Proc SPIE, Medical Imaging: Physics of Medical Imaging, 1/1/2017
• Projection-based motion estimation for cardiac functional analysis with high temporal resolution: a proof-of-concept study with digital phantom experiment.
  Suzuki Y, Fung GSK, Shen Z, Otake Y, Lee O, Ciuffo L, Ashikaga H, Sato Y, Taguchi K, Proc SPIE, Medical Imaging: Physics of Medical Imaging, 1/1/2017

Lectures

• Fibrillation: What Cardiologists Can Learn from Neuroscientists 
  Johns Hopkins University School of Medicine, Baltimore, MD - 1/23/2018
• Phase Transition and Sudden Death 
  University of Tokyo Graduate School of Information Science and Technology, Tokyo, Japan - 1/17/2018
• Causality, Information Flow and Fibrillation 
  University of California, Santa Barbara, Santa Barbara, CA - 1/11/2018
• Left Atrial Function as a Biomarker for Personalized Treatment 
  Osaka University School of Engineering, Osaka, Japan - 1/10/2018
• What�s Common Among Statistical Physics, Consciousness, Artificial Intelligence, and Atrial Fibrillation? 
  Institut National de Recherche en Informatique et en Automatique, Bordeaux, France - 1/5/2018
• Phase Transition, Renormalization, and Fibrillation 
  Universite de Bordeaux, Bordeaux, France - 1/3/2018
• Complex Systems Approach to Atrial Fibrillation 
  University of Exeter, Exeter, United Kingdom - 1/29/2017
• Data-Driven Modeling for Cardiac Fibrillation 
  Yokohama, Japan - 1/15/2017
• Information Theory of the Heart 
  University of Colorado, Boulder, Boulder, CO, 2014; Santa Fe Institute, Santa Fe, NM, 2016; New Orle - 1/13/2016
• Mathematical Approach to Heart Disease 
  Osaka University, Osaka, Japan, 2015; Nara, Japan, 2015 - 1/27/2015
• New Approach to Atrial Fibrillation 
  South San Francisco, CA - 1/8/2015
• Advanced Imaging Science for Cardiac Electrophysiology 
  Nagoya University, Nagoya, Japan - 1/11/2014
• Advanced Imaging Science for Cardiac Arrhythmia 
  Tokyo, Japan, 2013; Tokyo Medical and Dental University School of Medicine, Tokyo, Japan, 2013; Nati - 1/25/2013
• Role of Heteroheneous Zone in Ventricular Arrhythmogenesis 
  University of Michigan Medical School, Ann Arbor, MI, 2011; University of Utah, Salt Lake City, UT, - 1/15/2012
• Myofiber Orientation and Ventricular Mechanics 
  Tokyo, Japan - 1/28/2011
• Accuracy of Echocardiography-Based Quantification of Cardiac Mechanics 
  Tokyo, Japan - 1/28/2011
• Role of Intravenous Amiodarone for Management of Ventricular Tachycardia/Fibrillation 
  Orlando, FL - 1/8/2011
• Role of Advanced Imaging in Clinical Cardiac Electrophysiology 
  Tokyo, Japan - 1/5/2007
• Ventricular Fiber/Sheet Structure and Cardiac Electromechanics 
  University of Tokyo, Tokyo, Japan - 1/18/2006
• Clinical Applications of Cardiovascular CT/MRI 
  Kurume University School of Medicine, Fukuoka, Japan - 1/14/2006
• Ventricular Sheet Structure and Mechanics in Chronic Volume Overload 
  Baltimore, MD - 1/15/2005
• Transmural left ventricular mechanics underlying torsional recoil during relaxation 
  Stanford University School of Medicine, Stanford, CA, 2003; National Institutes of Health, Bethesda, - 1/20/2003
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Other

• Media release. Biomarker Predicts Success of Afib Treatment. 
  Ashikaga H, Johns Hopkins Medicine
  1/12/2018
• Scale-invariant structures of spiral waves. 
  Sohn D, Aronis AN, Ashikaga H, arXiv preprint
  https://arxiv.org/abs/1806.10768
  1/1/2018
• Is human atrial fibrillation stochastic or deterministic? 
  Aronis AN, Berger RD, Calkins H, Chrispin J, Marine JE, Spragg DD, Tao, S, Tandri T, Ashikaga H, arXiv preprint
  https://arxiv.org/abs/1802.01496
  1/1/2018
• Causal scale shift associated with phase transition to human atrial fibrillation. 
  Ashikaga H, Aronis AN, Tao S, James RG, arXiv preprint
  http://arxiv.org/abs/1804.10828
  1/1/2018
• Media release. Quantifying Effectiveness of Treatment for Irregular Heartbeat. 
  Ashikaga H, Johns Hopkins Medicine
  1/17/2017
• An Issue To Take To Heart. Interviewed by Contributing writer Margit B. Weisgal 
  Ashikaga H, Baltimore Sun � Prime Time Living
  http://marketplace.baltimoresun.com/baltimore-md-features/special-section/Prime-Time-Living/02-15-2017/Page-4/Story/An-Issue-To-Take-To-Heart
  1/15/2017
• Locating order-disorder phase transition in a cardiac system. 
  Ashikaga H, Asgari-Targhi A, arXiv preprint
  https://arxiv.org/abs/1708.03990
  1/1/2017
• Inter-scale information flow as a surrogate for downward causation that maintains spiral waves. 
  Ashikaga H, James RG, arXiv preprint
  https://arxiv.org/abs/1711.10126
  1/1/2017
• Causal unit of rotors in a cardiac system. 
  Ashikaga H, Prieto-Castrillo F, Kawakatsu M, Dehghani N, arXiv preprint
  https://arxiv.org/abs/1712.02203
  1/1/2017
• Media release. Video: This visualization of a human heart could help doctors predict stroke risk. 
  Ashikaga H, Science
  http://www.sciencemag.org/news/2016/11/video-visualization-human-heart-could-help-doctors-predict-stroke-risk
  1/9/2016
• Media release. �Corkscrew� Shape of Blood Flow in Heart�s Upper Chamber May Signal Lower Stroke Risk. 
  Ashikaga H, Johns Hopkins Medicine
  1/2/2016
• Hidden structures of information transport underlying spiral wave dynamics. 
  Ashikaga H, James RG, arXiv preprint
  http://arxiv.org/abs/1608.06816
  1/1/2016
• Media release. MRI May Help Gauge Stroke Risk in Those With Irregular Heartbeat. 
  Ashikaga H, Johns Hopkins Medicine, US News
  http://health.usnews.com/health-news/articles/2015/04/27/mri-may-help-gauge-stroke-risk-in-those-with-irregular-heartbeat
  1/27/2015
• Motion-tracking MRI gives new insight into stroke risk. Interviewed by Reporter Wayne Forrest. 
  Ashikaga H, AuntMinnie.com
  http://www.auntminnie.com/index.aspx?sec=ser&sub=def&pag=dis&ItemID=110818
  1/27/2015
• Media release. Approach That 'Digitizes' Crosstalk Among Heart Cells May Help Locate Epicenters of Dangerous Heart Rhythms. 
  Ashikaga H, Johns Hopkins Medicine
  1/10/2015
• Alumni Featured Profile. Interviewed by Program Manager Hilary Skolnik 
  Ashikaga H, Santa Fe Institute
  https://www.santafe.edu/engage/learn/alumni/hiroshi-ashikaga-fp
  1/1/2015
• Modeling the heart as a communication system. 
  Ashikaga H, Aguilar-Rodr�guez J, Gorsky S, Lusczek E, Marquitti FM, Thompson B, Wu D, Garland J, arXiv preprint
  https://arxiv.org/abs/1410.2169
  1/1/2014
• Github Software repository: 
  Ashikaga H
  https://github.com/ashikagah
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