正常者心磁図の三次元計測 (<特集>計測・磁気応用)

概要

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The paper presents a morphological study of real-time magnetocardiograms (MCGs) of a normal subject. The MCGs were measured by using a 3-D second-order gradiometer connected to three rf-SQUIDs in a prefabricated magnetically shielded room. The base line of the detecting coil for B_z is 2.8 cm and that of the coil for B_x and B_y is 1.4cm. The magnetic field components perpendicular to the chest (B_z component) and tangential to the chest (B_x, B_y components) were studied. From isofield contour maps and arrow maps of the QRS wave of the MCG, when multiple sources exist simultaneously, we can infer the locations and positions of different sources by combining the B_z component with the B_x and B_y components. The analyzed results showed that a method using of a 3-D second-order gradiometer that we developed is useful for discriminating the directions and locations of multiple sources.
社団法人日本磁気学会の論文
1997-04-15