Development of biomagnetic measurement system for mice with high spatial resolution

Ono, Yumie; Ishiyama, Atsushi; Kasai, Naoko; Chinone, Kazuo
July 2004
Applied Physics Letters;7/12/2004, Vol. 85 Issue 2, p332
Academic Journal
We have been developing a mice biomagnetic measurement system using a dc superconducting quantum interference device magnetometer for a comparative magnetoencephalogram study of transgenic and wild mice. In this study, we adopted a magnetometer with a pickup coil of 1.0 mm diameter and 0.7 mm lift-off distance to improve spatial resolution and magnetic field sensitivity. The magnetocardiogram of a wild mouse was measured as the initial application of the system. The bipolar peak positions in a magnetic field map separated by 5.6 mm were clearly detected with the maximum amplitude of 88 pT.


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