Method and apparatus for quantitative assessment of cardiac electrical events
First Claim
1. A computer-assisted method for assessing a set of recorded body-surface ECG signals, comprising:
- receiving a set of ECG signals recorded from a patient body surface;
using a processor to process the set of recorded body surface ECG signals, including identifying or calculating a respective reliability factor for each ECG signal based at least in part on a variability of at least three QT intervals or rate-corrected QT intervals in the respective ECG signal; and
evaluating the respective identified or calculated reliability factor for each ECG signal in order to assess whether the respective ECG signal should be automatically processed with ECG signals of the set.
13 Assignments
0 Petitions
Accused Products
Abstract
Method and apparatus for computer enabled analysis of ECG (electro cardiographic) data by exploiting computerized three-dimensional spatial presentation of the measured data using vectors. A three-dimensional presentation of the human heart may be correlated with waveforms specific for standard ECG or derived ECG signals based on the dipole approximation of the heart electrical activity. Additional tools for analyzing ECG data are also provided which may be used to determine the time of cardiac electrical events, to select specific beats for automated cardiac interval determination, and to flag ECGs that have been evaluated by automated means but may benefit by human reading.
-
Citations
20 Claims
-
1. A computer-assisted method for assessing a set of recorded body-surface ECG signals, comprising:
-
receiving a set of ECG signals recorded from a patient body surface; using a processor to process the set of recorded body surface ECG signals, including identifying or calculating a respective reliability factor for each ECG signal based at least in part on a variability of at least three QT intervals or rate-corrected QT intervals in the respective ECG signal; and evaluating the respective identified or calculated reliability factor for each ECG signal in order to assess whether the respective ECG signal should be automatically processed with ECG signals of the set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A computer-assisted method for assessing recorded body surface ECG signal, comprising:
-
receiving a recorded patient body surface ECG signal comprising a plurality of cardiac cycles; using a processor to process the recorded body surface ECG signal, including identifying or calculating a respective reliability factor for each of two or more cardiac cycles in the ECG signal based at least in part on a variability of at least three QT intervals or rate-corrected QT intervals in the respective ECG signal; and evaluating the respective identified or calculated reliability factor for each of the two or more cardiac cycles in order to assess whether the respective cardiac cycle should be automatically processed with cardiac cycles of the ECG signal. - View Dependent Claims (14, 15, 16)
-
-
17. A computer-assisted method for assessing a set of recorded body-surface ECG signals, comprising:
-
receiving a set of recorded patient body surface ECG signals, each recorded ECG signal having at least three cardiac complexes with complete QRS and T wave electrical data; for each recorded signal, using a processor to (i) identify the at least three cardiac complexes having QRS complete and T wave electrical data in the set of recorded body surface ECG signals that are most similar to one another, and (ii) determine the respective timing of one or more cardiac electrical events in the signal based on the at least three identified cardiac complexes; and evaluating the respective timing of the one or more cardiac electrical events to thereby establish a reliability of the respective ECG signal in order to assess whether the respective ECG signal should be automatically processed with ECG signals of the set. - View Dependent Claims (18)
-
-
19. A computer-assisted method for determining the time of a cardiac electrical event from a set of ECG signals recorded from the body surface, comprising:
-
receiving a set of recorded patient body surface ECG signals, each recorded ECG signal having at least three cardiac complexes with complete QRS and T wave electrical data; using a processor to determine a respective dissimilarity factor for each possible combination of three cardiac complexes with complete QRS and T wave electrical of the ECG signals, wherein said dissimilarity factor is determined from at least 3 cardiac complexes with complete QRS complex and T wave electrical data; and evaluating the respective dissimilarity factor for each ECG signal to thereby establish a reliability of the respective ECG signal in order to assess whether the respective ECG signal should be automatically processed with ECG signals of the set. - View Dependent Claims (20)
-
Specification