Simon Gross1,
Benjamin E. Dietrich1, Christoph Barmet1, 2,
Klaas P. Prssmann1
1Institute
for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland; 2Skope
Magnetic Resonance Technologies, Zurich, Switzerland
Magnetic field fluctuations originating from the beating human heart can be measured using highly sensitive NMR field probes. The fluctuations are caused by changes in the local susceptibility distribution and are thus a measure for the bio-mechanical activity of the heart. Field fluctuations were measured with 15 NMR field probes simultaneously and with a temporal bandwidth of 200 Hz. ECG-signals were measured concurrently, and allowed to synchronize the field curves from different experiments. Like this, 210 positions on the chest were synchronized and will be of great value in identification and understanding of the underlying physiological mechanisms.