1. Measurement of Rat Magnetocardiograms by Using a High-$T_{\rm C}$ SQUID Magnetometer System
- Author
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Jonghyun Song, In-Seon Kim, San Ahn, and Hyuckchan Kwon
- Subjects
Physics ,Magnetometer ,Superconducting magnet ,Condensed Matter Physics ,Biomagnetism ,Electronic, Optical and Magnetic Materials ,law.invention ,Magnetic field ,Nuclear magnetic resonance ,Amplitude ,law ,Shielded cable ,Electromagnetic shielding ,Electrical and Electronic Engineering ,Magnetocardiography - Abstract
We have measured biomagnetic signals in rat by using a high-TC SQUID magnetometer system employing a small magnetically shielded box. For the rat cardiac magnetic field measurements, a healthy rat with body weight of about 350 g was anesthetized and fixed on a plastic xyz-stage in supine position inside the magnetically shielded box. We could obtain strong R-peak amplitude up to 56 pT with well defined P-, QRS-, T-wave, and ST-segment separating T-wave from QRS complex. We measured and analysed rat MCG waveforms for 5 × 5 grid measurements covering 60 mm × 60 mm area and 12 circular measurements centered at the heart position. This work demonstrates that the potential advantages of high-TC SQUID magnetometer system in evaluating the rat MCG measurement for animal models of cardiac electrical activities. more...
- Published
- 2011
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