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Measurement of Rat Magnetocardiograms by Using a High$T_{\rm C}$ SQUID Magnetometer System

Measurement of Rat Magnetocardiograms by Using a High$T_{\rm C}$ SQUID Magnetometer System,10.1109/TASC.2010.2094994,IEEE Transactions on Applied Supe

Measurement of Rat Magnetocardiograms by Using a High$T_{\rm C}$ SQUID Magnetometer System  
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Wehavemeasuredbiomagneticsignalsinratbyusing ah igh- SQUID magnetometer system employing a small mag- netically shielded box. For the rat cardiac magnetic field measure- ments, a healthy rat with body weight of about 350 g was anes- thetized and fixed on a plastic xyz-stage in supine position inside the magnetically shielded box. We could obtain strong -peak am- plitude up to 56 pT with well defined -, -, -wave, and -segment separating -wave from complex. We mea- sured and analysed rat MCG waveforms for 5 5g rid measure- ments covering 60 mm 60 mm area and 12 circular measure- ments centered at the heart position. This work demonstrates that the potential advantages of high- SQUID magnetometer system in evaluating the rat MCG measurement for animal models of car- diac electrical activities.
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