Integrated vectorcardiogram (iVCG) rotation modeling and compensation

We are designing an integrated wireless Vectorcardiogram (iVCG) that is portable and worn on the chest of the patient and is capable of continuously recording and transmitting the heart vector, which is a comprehensive measure of the electrical activity of the heart. The VCG contains the same information as the classic electrocardiogram (ECG). Although a physician or trained technician will initially install the iVCG device in the appropriate position, it is prone to subsequent rotation errors introduced by the patient placement of the device. In this paper we characterize the rotation errors and present a software solution to correct the effect of the rotation error on the iVCG signals.