New development of three-dimensional magnetocardiogram

2001 Fiscal Year Final Research Report Summary

• Project/Area Number: 10357011
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 展開研究
• Research Field: Thoracic surgery
• Research Institution: University of Tsukuba
• Principal Investigator: TERADA Yasushi Institute of Clinical Medicine, University of Tsukuba, Associate Professor, 臨床医学系, 助教授 (90180083)
• Co-Investigator(Kenkyū-buntansha): TSUKADA Keiji Central Research Laboratory, Hitachi, Ltd., 中央研究所, 主任研究員
• Project Period (FY): 1998 – 2001
• Keywords: superconducting quantum interference device (SQUID) / magnetocardiogram / iso-integral map / vector arrow map / ischemic heart disease / arrhythmia / fetus

Research Abstract

We measured the electrical current generated by the heart using a multichannel superconducting quantum interference device (SQUID) system. We tried to develop the three dimensional magnetocardiography (MCG) using this system.
Regional myocardial depolarization was visualized noninvasively by MCG. Myocardial ischemia was evaluated using newly developed iso-integral map on MCG. MCG mapping was useful for diagnosis of ischemic heart disease. Premature cardiac contractions and the developmental changes in PQ, QRS and QT intervals were investigated in the foetus. Arrhythmias were analyzed using magnetoanatomical mapping. Partial atrial standstill was successfully diagnosed. Volume unloading of the ventricle was evaluated.

Research Products

• [Publications] TSUKADA K, et al.: "An iso-integral mapping technique using magnetcaraiogram, and its possible use for diagnosis of ischemic heart diseas"Internal J Cardiac Imaging. 16. 55-56 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] TSUKADA K, et al.: "Magnetcardiographic mapping characteristics for diagnosis of ischemic heart disease"Computers in Cardiology. 27. 505-508 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Terada Y, et al.: "Right ventricular volume unloading evaluated by tangential magnetocardiography"Jpn J Thorac Cardiovasc Surg. 48. 16-23 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Horigome H, et al.: "Magnetcardiographic determination of the developmental changes in PQ, QRS, and QT intervals in the fetus"Acta Paediatr. 89. 64-67 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Yamada S, et al.: "Noninvasive, beat-to -beat analysis of atrial arrhythmias using magnetcardiogram"PACE. 23. 556 (2000)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Horigome H, et al.: "Detection of cardiac hypertrophy in the fetus by approximation of the current dipole using magnetcardigraphy"Pediatr Res. 50. 242-245 (2001)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Horigome H., Shiono J., Shigemitsu S., Asaka M., Matsui A., Kandori A., Miyashita T., Tsukada K.: "Detection of cardiac hypertrophy in the fetus by approximation of tne current dipole using magnetocardiography"Pediatr Res.. 50. 242-245 (2001)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Tsukada K., Miyashita T., Kandori A., Mitsui T., Terada Y., Sato M., Shiono J., Horigome H., Yamada S., Yamaguchi I.: "An iso-integral mapping technique using magnetocardiogram, and its possible use for diagnosis of ischemic heart disease"International Journal of Cardiac Imaging. 16. 55-66 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Tsukada K., Miyashita T., Kandori A., Yamada S., Sato M., Terada Y., Mitsui T., Yamaguchi I., Kanzaki H., Kamakura S., Miyatake K.: "Magnetocardiographic mapping characteristic for diagnosis of ischemic heart disease"Computers in Cardiology. 27. 505-508 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Terada Y., Mitsui T., Sato M., Horigome H., Tsukada K.: "Right ventricular volume unloading evaluated by tangential magnetocardiography"The Japanese Journal of Thorac and Cardiovascular Surgery. 48. 16-23 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Horigome H., Takahasi MI., Asaka A., Shigemitu S., Kandori A., Tsukada K.: "Magnetocardiographic determination of the developmental changes in PQ, QRS and QT intervals in the foetus"Acta Paediatr. 89. 64-67 (2000)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Yamada S., Tsukada K., Miyashita T., Kandori A., Kuga A., Yamaguchi I.: "Noninvasive, beat-to-beat analysis of atrial arrhythmias using magnetocardiogram"PACE. 23. 556 (2000)
  • Description: 「研究成果報告書概要(欧文)」より