Partager

Magnétocardiographe récent.

[In Japanese. / En japonais.]

Auteurs : TSUKADA K.

Type d'article : Article

Résumé

Magnetocardiography (MCG), which uses a multi-channel superconducting quantum interference device (SQUID), is applicable to the non-invasive analysis of ischemic heart disease and arrhythmia. MCG systems that use a low-temperature superconductor (LTS)-SQUID enable the measurement of cardio-magnetic fields across a wide age range, from fetus to mature adult, and are capable of detecting very weak signals because the magnetic sensor is sensitive to signals above a few fT/(Hz). Abnormalities in the current distribution of an ischemic heart and the propagation pathway for arrhythmia are thus easily detected and visualized. In the area of next-generation products, 16- and 32-channel high-temperature superconductor (HTS)-SQUID systems are also being developed to realize more compact systems. Some open-ended cylindrical magnetic shields were applied to HTS- and LTS-MCG systems. These cylindrical shields made a uniform magnetic field in the light magnetic shielding, and environmental noise was easily cancelled due to the uniform magnetic field inside the shielding. An improvement in HTS SQUID sensitivity and a noise reduction technique have made real-time MCG measurement possible.

Détails

  • Titre original : [In Japanese. / En japonais.]
  • Identifiant de la fiche : 2008-1195
  • Langues : Japonais
  • Source : Journal of the Cryogenic Society of Japan - vol. 42 - n. 9
  • Date d'édition : 2007

Liens


Voir d'autres articles du même numéro (1)
Voir la source

Indexation