What is it about?
MCG is the measurement of weak cardiac magnetic fields. Conventionally it is measured using superconducting quantum interference devices (SQUID) sensors at a low temperature of 4.2 K with a clinically acceptable signal-to-noise ratio. The paper describes room temperature measurement of MCG using fluxgate sensor.
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Why is it important?
Though the sensitivity of fluxgate sensor is in the verge to record MCG and it cannot be compared to the performance of SQUID-based MCG, these demonstrations encourage the wide spread popularity of fluxgate for various applications and the need to improve the upcoming fluxgate technology for measuring MCG.
Perspectives
The results on measuring MCG using fluxgate is encouraging with its best possible noise floor and by improving the performance of fluxgate core materials, could achieve even better noise floor so that it could be used for subjects with various cardiac dysfunctions. The fact the fluxgate sensors are portable and provide orthogonal measurements further provide additional vectorial information of the MCG to aid in source localization.
Sengottuvel Senthilnathan
Indira Gandhi Center for Atomic Research, Kalpakkam, TN, India
Read the Original
This page is a summary of: Feasibility study on measurement of magnetocardiography (MCG) using fluxgate magnetometer, January 2018, American Institute of Physics,
DOI: 10.1063/1.5028788.
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