Abstract Although magnetocardiography (MCG) signal is gained using SQUID in shielding rooms, measuring errors inevitably exist in its measuring process.

• 摘 要 虽然心磁信号是采用超导量子干涉仪（SQUID）在屏蔽室内检测得到的，但在它的测量过程中总不可避免存在误差。