#High-sensitivity, high resolution magnetocardiography (MCG) for use at room temperature developed Researchers at Tohoku University have succeeded in developing a sensor for the living body that can detect the bio-magnetic field with high sensitivity and high resolution. This was achieved by using a tunnel magnetoresistance (TMR) device to work at room temperature. In a world first, the group led by Professor Yasuo Ando of the Graduate school of Engineering in collaboration with Konica Minolta, Inc. succeeded in detecting the heart magnetic field by using the TMR device. This device enables cardiac electric activity to be measured in a nonaggressive way so that the diagnosis of heart conditions such as coronary heart disease or arrhythmia can be improved greatly. In the future, a special shield room for detecting the bio-magnetic field would be unnecessary because this device has a large field range. This would mean that heart conditions can be measured and treated in a more relaxed environment. The device is expected to make a difference in medical treatments, preventive health care and sports p
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