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Research Results

Original Papers

  1. " Roles of Subcellular Na+ Channel Distributions in the Mechanism of Cardiac Conduction", Tsumoto K, Ashihara T, Haraguchi R, Nakazawa K, Kurachi Y, Biophys J, Vol.100, No.3, pp.554-563 (2011)
  2. " Transmural Dispersion of Repolarization Determines Scroll Wave Behavior During Ventricular Tachyarrhythmias - A Simulation Study - ", Haraguchi R, Ashihara T, Namba T, Tsumoto K, Murakami S, Kurachi Y, Ikeda T, Nakazawa K, Circ J, Vol.75, No.1, pp.80-88 (2011)
  3. "Development of an Operative Procedure Explanation System using Three-dimensional CG for Congenital Heart Diseases", Goto Y, Haraguchi R, Kagisaki K, Kurosaki K, Sasagawa M, Yoshitomi K, Tani S, Iwata M, Inada H,Nakazawa K, Japan Journal of Medical Informatics, Vol.29, No.5, pp.191-200 (2010) [in Japanese]
  4. "Construction of a Health Instruction Support System Aiming at Prevention of Metabolic Syndrome", Tani S, Marukami T, Matsuda A, Shindo A, Takemoto K, Okamura T, Inada H, HEP, Vol.37, No.2, pp.35-42 (2010) [in Japanese]
  5. "Analysis of Virtual Electrode-induced Excitation Propagation in Hypothermic Defibrillation Using Optical Mapping System", Arafune T, Sakuma I, Shibata N, Ashihara T, Nakazawa K, Honjo H, Kamiya K, Kodama I, Trans. JSMBE, Vol.47, No.6, pp.514-521 (2009) [in Japanese]
  6. " In silico Analysis of Filament Dynamics during Spiral Wave Reentry in 3-D Ventricular Wall Model", Haraguchi R, Ashihara T, Todo T, Namba T, Murakami S, Kurachi Y, Nakazawa K, Trans. JSMBE, Vol.46, No.6, pp.660-666 (2008) [in Japanese]
  7. " Theoretical analysis of the critical mass hypothesis as the maintenance mechanism of ventricular fibrillation", Toda S, Ashihara T, Watanabe J, Shirato K, Ikeda T, Nakazawa K, Jpn. J. Electrocardiol., Vol.28, No.4, pp.263-272 (2008) [in Japanese]
  8. "A Sketch-Based Interface for Modeling Myocardial Fiber Orientation that Considers the Layered Structure of the Ventricles", Takayama K, Ashihara T, Ijiri T, Igarashi T, Haraguchi R, Nakazawa K, J Physiol Sci, Vol.58, No.7, pp.487-492 (2008)
  9. "A Procedural Method for Modeling the Purkinje Fibers of the Heart", Ijiri T, Ashihara T, Yamaguchi T, Takayama K, Igarashi T, Shimada T, Namba T, Haraguchi R, Nakazawa K, J Physiol Sci, Vol.58, No.7, pp.481-486 (2008)
  10. "Analysis of the Regional Strain Rate in the Left Ventricular Myocardium by MR Phase-Contrast Imaging", Haraguchi R, Horio H, Kuroda Y, Masuda Y, Kuroda T, Oshiro O, Naito H, Higashi M, Nakazawa K, IEICE Trans. Inf. & Syst., Vol.J91-D, No.7, pp.1818-1828 (2008) [in Japanese]
  11. "Identification of Local Myocardial Repolarization Endpoint by Bipolar Electrode Potential", Namba T, Todo T, Ashihara T, Yao T, Haraguchi R, Nakazawa K, Ikeda T, Ohe T, J Electrocardiol, Vol.40, pp.S97-S102 (2007)
  12. "A Pen-based User Interface for Graphical Finding Report in Cardiac Catheterization", Mori Y, Igarashi T, Haraguchi R, Nakazawa K, Methods Inf Med, Vol.46, No.6, pp.694-699 (2007)
  13. "Study on the mechanisms of ventricular fibrillation induction in a virtual heart using supercomputer", Nakazawa K, Haraguchi R, Naito H, Higashi M, Shimizu W, Ashihara T, Namba T, Yao T, Todo T, Ikeda T, Jpn. J. Electrocardiol., Vol.27, No.2, pp.129-139 (2007) [in Japanese]

International Conferences

  1. "Construction of an Online Support System for Promotion of Behavior Change to prevent Cerebral and Cardiovascular Diseases", Tani S, Inada H, International Health Evaluation and Promotion Association (IHEPA) Biannual International Conference Honolulu, 2011/02/11-12, Oral, Hwai'i (2011)
  2. "Roles of fibroblasts in the mechanisms of complex fractionated atrial electrograms and catheter ablation during chronic atrial fibrillation", Ashihara T, Haraguchi R, Nakazawa K, Namba T, Ikeda T, Nakazawa Y, Ozawa T, Itoh H, Ito M, Horie M, The 3rd Asia-Pacific Heart Rhythm Society Scientific Session (APHRS 2010) in conjunction with The 4th Asia-Pacific Atrial Fibrillation Symposium (APAFS2010), 2010/10/27-30, Best Paper Award / Clinical, Jeju Island (2010)
  3. "Scroll wave dynamics in a simulated ventricular wall model: Role of transmural dispersion of repolarization", Haraguchi R, Ashihara T, Namba T, Tsumoto K, Murakami S, Kurachi Y, Ikeda T, Nakazawa K, The 13th Congress of the International Society for Holter and Noninvasive Electrocardiology, 2009/06/04-06, Poster, Yokohama (2009)
  4. "Steep restitution slope is not an essential factor for microvolt-level T-wave alternans: Insights from computer simulations", Ashihara T, Yao T, Haraguchi R, Nakazawa K, Namba T, Ikeda T, Ito M, Horie M, The 13th Congress of the International Society for Holter and Noninvasive Electrocardiology, 2009/06/04-06, Poster, Yokohama (2009)
  5. "Analogy of QRS complex between precordial unipolar potential (used in standard 12-lead electrocardiograph) and precordial bipolar potential (often used in event electrocardiograph)", Namba T, Todo T, Ashihara T, Haraguchi R, Nakazawa K, Ikeda T, The 13th Congress of the International Society for Holter and Noninvasive Electrocardiology, 2009/06/04-06, Poster, Yokohama (2009)
  6. "Analysis of Cardiac Torsion from MR Phase-Contrast Image", Horio H, Kuroda Y, Kuroda T, Oshiro O, Wada S, Haraguchi R, Nakazawa K, International Forum on Medical Imaging in Asia 2009, 2009/1/19-21, Poster, Taipei (2009)
  7. "Scroll Wave Dynamics in a Three-Dimensional Cardiac Tissue Model: Roles of Transmural Dispersion of Repolarization", Haraguchi R, Nakazawa K, Ashihara T, Namba T, Todo T, Naito H, Higashi M, Shimizu W, Suzuki S, Murakami S, Kurachi Y, The 2nd MEI International Symposium: The Worldwide Challenge to Physiome and Systems Biology, 2007/12/08-09, Poster, Osaka (2007)
  8. "The use of L-system for modeling Purkinje fibers", Ijiri T, Takayama K, Igarashi T, Ashihara T, Namba T, Yamaguchi T, Shimada T, Haraguchi R, Nakazawa K, The 2nd MEI International Symposium: The Worldwide Challenge to Physiome and Systems Biology, 2007/12/07-09, Poster, Osaka (2007)
  9. "Development of graphical interface for modeling excitation map in the electrophysiological heart simulator", Namba T, Haraguchi R, Igarashi T, Owada S, Yao T, Ashihara T, Todo T, Ikeda T, Nakazawa K, 2007 IEEE/ICME International Conference on Complex Medical Engineering, 2007/05/23-27, Poster, Beijing (2007)
  10. "Development of "Cardiac Arrhythmia Risk Evaluation" System Based on Computer Simulation", Todo T, Haraguchi R, Namba T, Yao T, Ashihara T, Higashi M, Inada H, Nakazawa K, 2007 IEEE/ICME International Conference on Complex Medical Engineering, 2007/05/23-27, Oral, Beijing (2007)

Invited Lectures

  1. "Simulation Studies of Cardiac Arrhythmias in 3D Ventricular Wall Model", Haraguchi R, The 25th Symposium on Biological and Physiological Engineering [Organized Session: Visualization and Clinical Application on Cardiac Electrophysiology], 2010/9/23-25, Okayama (2010)
  2. "A series of cardiac arrhythmia studies by mathematical heart models and computer simulation", Nakazawa K, The 22nd Clinical Arrhythmia Research Conference [Special Lecture], 2010/01/09, Tokyo (2010)
  3. "Shall we think about human interface of electronic medical record system? Visual information should be used more effectively", Nakazawa K, Haraguchi R, Kagisaki K, Kurosaki K, Goto Y, Yoshitomi K, Ijiri T, Takayama K, Umetani N, Igarashi T, IEICE Technical Committee on Medical Imaging [Special Lecture], 2009/11/11, Osaka (2009)
  4. "In Silico Analysis of Filament Dynamics during Spiral Wave Reentry in 3D Ventricular Wall Model : Simulation Study", Haraguchi R, The 26th Annual Meeting of the Japanese Society of Electrocardiology [Panel Discussion: Computational Arrhythmology], 2009/07/02-04, Kyoto (2009)

Reviews

  1. "Health Management Support Technologies Aiming for Cerebral and Cardiovascular Diseases at Home", Tani S, Nakazawa K, Inada H, MEDICAL IMAGING TECHNOLOGY, Vol.29, No.2, in press (2011) [in Japanese]
  2. "A series of cardiac arrhythmia studies by mathematical heart models and computer simulation", Nakazawa K, Haraguchi R, Ashihara T, Namba T, Toda S, Yamaguchi T, Ijiri T, Takayama K, Igarashi T, Kurachi Y, Ikeda T, Heart, Vol.42 (Suppl.4), pp.208-215 (2010) [in Japanese]
  3. "Mechanisms of fatal arrhythmia from the view of excitation propagation activities", Nakazawa K, Haraguchi R, Internal Medicine, Vol.102, No.3, pp.440-446 (2008) [in Japanese]
  4. "Substrates for initiating ventricular tachyarrhythmias reflected in microvolt T wave alternans: A simulation study", Ashihara T, Yao T, Ito M, Horie M, Namba T, Haraguchi R, Nakazawa K, Ikeda T, Heart, Vol.39 (Suppl.1), pp.14-19 (2007) [in Japanese]
  5. "Influences of local conduction delay of right ventricular epicardium to right precordial leads of electrocardiogram", Namba T, Todo T, Yao T, Ashihara T, Haraguchi R, Nakazawa K, Ikeda T, Ohe T, Heart, Vol.39 (Suppl.1), pp.57-61 (2007) [in Japanese]
  6. "Proposals of Interface to Support Sketch Input for Electronic Medical Record System", Nakazawa K, Haraguchi R, Mori Y, Igarashi T, Human Interface, Vol.9, No.2, pp.133-140 (2007) [in Japanese]
  7. "Handwritten input interface in medical informatics system. -Current state and issues-", Nakazawa K, Haraguchi R, Mori Y, Igarashi T, DIGITAL MEDICINE Vol.6, No.6, pp.24-27 (2007) [in Japanese]

Technical Reports

  1. "A vector formatted schema system for congenital heart disease: study on communication tool for health care workers", Iwata M, Yoshitomi K, Goto Y, Haraguchi R, Kurosaki K, Kagisaki K, Tani S, Inada S, Nakazawa K, IEICE Technical Report, Vol.110, No.460, MBE2010-126, pp.131-134(2011) [in Japanese]
  2. "Development of heart model reconstructing system from MR images", Inada S, Suzuki S, Iwata M, Haraguchi R, Higashi M, Hidaka I, Inagaki M, Sugimachi M, Nakazawa K, IEICE Technical Report, Vol.110, No.364, MI2010-108, pp.143-146 (2011)[in Japanese]
  3. "Application for Offering Compound Search Web Services on Medical Image using Mashup Methods",Iwata M, Haraguchi R, Higashi M, Kanzaki S, Tani S, Inada S, Nakazawa K, IEICE Technical Report, Vol.110, No.364, MI2010-107, pp.139-142 (2011) [in Japanese]
  4. "Cardiovascular Modeling System of Congenital Heart Disease Based on Neonatal Echocardiography Images", Maeda K, Haraguchi R, Nakao M, Kurosaki K, Kagisaki K, Nakazawa K, Minato K, IEICE Technical Report, Vol.110, No.364, MI2010-84, pp.17-22 (2011) [in Japanese]
  5. "Strain analysis of left ventricular wall with geometrically-constrained deformation using MR-phase contrast imaging", Minami S, Haraguchi R, Nakazawa K, Nakamura M, Wada S, IEICE Technical Report, Vol.110, No.28, MI2010-16, pp.79-84 (2010)[in Japanese]
  6. "Development of a meal entry application aiming at prevention of metabolic syndrome: attempts for improving the usability", Tani S, Haraguchi R, Takada A, Okamura T, Inada H, Nakazawa K, IEICE Technical Report, Vol.109, No.460, MBE2009-128, pp.149-153 (2010) [in Japanese]
  7. "A study on informed consent support for the congenital heart diseases: development and assessment of explanation system for operative procedure by using 3-D computer graphics", Goto Y, Nakazawa K, Haraguchi R, Kagisaki K, Kurosaki K, Sasagawa M, Inada H, IEICE Technical Report, Vol.109, No.406, MBE2009-97, pp.109-114 (2010) [in Japanese]
  8. "Reproduction of transmural dispersion of repolarization based on cleft potential hypothesis", Suzuki S, Ashihara T, Haraguchi R, Tsumoto K, Murakami S, Kurachi Y, Nakazawa K, IEICE Technical Report, Vol.108, No.479, MBE2008-110, pp.83-88 (2009) [in Japanese]
  9. "Behavior of Filaments for the Judgment of Maintenance of Spiral Wave Reentry in the Cardiac Arrhythmia Risk Evaluation System Based on Computer Simulation", Todo T, Haraguchi R, Namba T, Yao T, Ashihara T, Higashi M, Inada H, Nakazawa K, IEICE Technical Report, Vol.107, No.409, MBE2007-75, pp.13-16 (2007) [in Japanese]
  10. " Development of an Interactive System for Explaining Senning Surgical Operation", Omori K, Haraguchi R, Yoshitomi K, Kagisaki K, Yagi T, Kishino F, Nakazawa K, IEICE Technical Report, Vol.107, No.409, MBE2007-74, pp.9-12 (2007) [in Japanese]

Awards Received (including Co-author)

  1. Winner of the Best Paper Award, the 3rd Asia-Pacific Heart Rhythm Society Scientific Session, "Roles of fibroblasts in the mechanisms of complex fractionated atrial electrograms and catheter ablation during chronic atrial fibrillation", Ashihara T, Haraguchi R, Nakazawa K, Namba T, Ikeda T, Nakazawa Y, Ozawa T, Itoh H, Ito M, Horie M (2010)
  2. Best Paper Award, The Japanese Society of Electrocardiology, "Theoretical analysis of the critical mass hypothesis as the maintenance mechanism of ventricular fibrillation", Toda S, Ashihara T, Watanabe J, Shirato K, Ikeda T, Nakazawa K (2009)
  3. Young Scientist Award, Joint Conference of Medical Informatics, " Development of Virtual Heart Modeling for Electrophysiological Computer Simulation Importing the Individual Characteristics", Haraguchi R, Igarashi T, Ijiri T, Takayama K, Yao T, Namba T, Todo T, Higashi M, Nakazawa K (2008)
  4. Research Award, Japanese Society for Medical and Biological Engineering, "Analysis of shock induced virtual electrode polarization in hypothermic cardiac tissue using optical mapping", Arafune T, Shibata N, Ashihara T, Nakazawa K, Honjo H, Kamiya K, Kodama I (2008)
  5. Research Award, NEC C&C Systems Users Association, "Computational Analysis and Visualization of Cardiac Arrhythmia using a Supercomputer", Haraguchi R, Nakazawa K (2007)
  6. Eurographics 2007 Medical Prize 2nd Award, "A Pen-based Interface for Generating Graphical Reports of Findings in Cardiac Catheterization", Mori Y, Igarashi T, Haraguchi R, Nakazawa K (2007)
  7. Research Award, Japan Association for Medical Informatics, "Development of Effective User Interface for Graphical Finding Report in Cardiac Catheterization", Mori Y, Igarashi T, Haraguchi R, Okawa T, Yoshida T, Inada H, Nakazawa K (2007)

Patents

  1. "Electronic record system and control program device with display and tablet function for manipulating display area functions with pen stylus", Appl. No. 10/300,890 (November 21, 2002), US PTA 6,886,061 (April 26, 2005)
  2. "Method for supporting medical treatment system and medical treatment support system", Appl. No. 09/989,437 (November 21, 2001), US PTA 7,567,238 (July 28, 2009)
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