Progress in Superconductivity

The Korean Superconductivity Society (한국초전도학회)
권호 표지

Development of magnetocardiograph system using YBCO SQUID magnetometers

YBCO SQUID 자력계를 이용한 자기심장검사장치 개발

  • Kim, I.S. (Korea Research Institute of Standards and Science) ;
  • Oh, S.H. (Korea University) ;
  • Lim, H.K. (Korea Research Institute of Standards and Science) ;
  • Lee, Y.H. (Korea Research Institute of Standards and Science) ;
  • Lee, S.G. (Korea University) ;
  • Park, Y.K. (Korea Research Institute of Standards and Science)
  • Published : 2007.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

YBCO do superconducting quantum interference device (SQUID) magnetometers based on bicrystal junctions have been fabricated for magnetocardiograph (MCG) measurements. We could fabricate YBCO SQUID magnetometers having magnetic field noise of about $20fT/Hz^{1/2}$ at white noise region. We have developed an MCG system employing the high performance SQUID magnetometers. The lightweight MCG system, requiring liquid nitrogen as a coolant, consists of 6-channel SQUID sensors, an adjustable patient bed with sliding motion, and data analyses software. The MCG system could record quite clear MCG signals in a room with moderate magnetic shielding. In normal operation with multi-position MCG measurements, we could obtain clear 48-point mappings of magnetic field map and current source map with high enough signal qualities far clinical trials.

Keywords