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Two-dimensional propagation of magnetocardiac wave signals for characterizing myocardial ischemia
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Image of FIG. 1.
FIG. 1.

Relative position of SQUID arrays to a heart. SQUIDs are distributed inside the gray area.

Image of FIG. 2.
FIG. 2.

Collection of spatially distributed magnetocardiac signals (a) before and (b) after zeroing by using the ’s at the pre- wave segment. The pre- wave segment are marked with two arrows in (a). Magnified collection of spatially distribution curves at wave interval shown in (b).

Image of FIG. 3.
FIG. 3.

wave propagation of a normal heart.

Image of FIG. 4.
FIG. 4.

Time-dependent area ratio of wave propagation for (a) normal heart and (b) CAD with stenotic LAD before (square symbols) and after (cross symbols) PCI therapy.


Generic image for table
Table I.

Statistic results for diagnosing ischemia using time-dependent area ratio of wave propagation detected with the SQUID MCG system. The reference diagnosis is the result of CAG. The criterion for CAD in CAG is that the diameter stenosis of coronary artery is more than 50%. It should be noted that 30 healthy volunteers were enrolled to be normal only with electrocardiographic screening but without CAG examinations.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional propagation of magnetocardiac T wave signals for characterizing myocardial ischemia