Magnetocardiogram Recordings in a Nonshielded Environment—Reproducibility and Ischemia Detection

Background: Magnetocardiography (MCG) is a noninvasive technology that measures the magnetic field of the heart by superconducting quantum interference devices (SQUID) sensors. The novelty of the present system is that the sensors can be operated without electromagnetic shielding of the examination room, thus allowing the system to be easily installed in the emergency department or chest pain unit. Studies in shielded rooms, found that this imaging modality may have better sensitivity as compared to ECG in detecting ischemia. We aimed (1) to assess the reproducibility, intra‐observer, and interobserver interpretation variability and (2) to assess the MCG maps in the presence of coronary narrowings.

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