Classification of magnetocardiographic- and combined electro-magnetocardiographic measurements

A stepwise linear discriminant analysis was used to evaluate the diagnostic performance of the unipositional vector magnetocardiogram, the Frank vector electrocardiogram and also their combination. Analyses were based on a material of 290 normal subjects and 259 patients with different cardiac disorders. The major finding was that there were no significant differences between the diagnostic performance of VMCG compared with Frank´s VECG in normal, MI and LVH groups but the diagnostic classifications of VMCG and VECG were dissimilar in several cases. Combining the VMCG and VECG parameters increased the correct classification rate maximally about 7.7% unit over the VECG-classification. The number of incorrect classifications was reduced as much as 30%.