A movable unshielded magnetocardiography system

• DOI: 10.1126/sciadv.adg1746
• Publication Date: 2023-04-10T14:02:09Z
• Authors: Wei Xiao; Chenxi Sun; Liang Shen; Yulong Feng; Meng Liu; Yulong Wu; Xiyu Liu; Teng Wu; Xiang Peng; Hong Guo
• Keywords: Magnetocardiography; Shielded cable

Magnetocardiography (MCG), which uses high-sensitivity magnetometers to record magnetic field signals generated by electrical activity in the heart, is a noninvasive method for evaluating heart diseases such as arrhythmia and ischemia. The MCG measurements usually require participant keeping still magnetically shielded room due immovable sensor noisy external environments. These requirements limit applications, exercise tests long-term observations, are useful early detections of diseases. Here, we introduce movable system that can clearly freely behaving participants an unshielded environment. On basis optically pumped with sensitivity 140 fT/Hz 1/2 , successfully demonstrated resting tests. Our promising realize practical multichannel nearly sets no limits brings another kind insight into medical diagnosis disease.