Magnetic field fluctuations detect arterial pulse

Researchers from the Indian Institute of Technology Madras have proposed a magnet-based sensor that would allow scientists to measure the velocity of blood pulse waves within the carotid artery. Each heart beat pumps blood at a high pressure through the arteries, and parameters such as the pulse speed provide useful pathophysiological information (IEEE Trans. Biomed. Circuits Syst. 11 1065).

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