A system for determining cardiovascular characteristics is to be disposed on the body of a subject. The body has a detection area. The system includes a detector member and a processor. The detector member includes at least sixteen precordial electrodes which are to be placed on the chest of the subject within the detection area and which produce at least sixteen electrocardiogram (ECG) signals. The processor calculates at least twenty-four characteristic values based on the ECG signals. The characteristic values serve as basis for determining a location of chronic or acute myocardial ischemia in the body and a region of chronic or acute myocardial ischemia in the heart of the subject.

A system for determining cardiovascular characteristics is to be disposed on the body of a subject. The body has a detection area. The system includes a detector member and a processor. The detector member includes at least sixteen precordial electrodes which are to be placed on the chest of the subject within the detection area and which produce at least sixteen electrocardiogram (ECG) signals. The processor calculates at least twenty-four characteristic values based on the ECG signals. The characteristic values serve as basis for determining a location of chronic or acute myocardial ischemia in the body and a region of chronic or acute myocardial ischemia in the heart of the subject.

A method enables analysis of (e.g. bioelectric) signals acquired by measurement. The method provides N signals U for an observation space and each has a time- and space-dependent signal characteristic U. Digitized signals for a time period T have M time points and define an M?N matrix with M tuples of N signal values each. Signal values acquired at time t form an N-tuple ?.sub.t=(U.sub.1, . . . , U.sub.N).sub.t in a signal space. The method acquires all combinations of k tuples from the M tuples, and calculates distances between all tuples. Distance values are calculated and define edge lengths of a (k?1) simplex (SIM) with one simplex assigned to each combination of k time points. Quantity characteristics of the simplex (SIM) are encoded into color values (COL), and displays the colors in a combinatorial time lattice (CTL). Each lattice point (GP) is displayed with the color encoded for the assigned simplex.

A method enables analysis of (e.g. bioelectric) signals acquired by measurement. The method provides N signals U for an observation space and each has a time- and space-dependent signal characteristic U. Digitized signals for a time period T have M time points and define an M?N matrix with M tuples of N signal values each. Signal values acquired at time t form an N-tuple ?.sub.t=(U.sub.1, . . . , U.sub.N).sub.t in a signal space. The method acquires all combinations of k tuples from the M tuples, and calculates distances between all tuples. Distance values are calculated and define edge lengths of a (k?1) simplex (SIM) with one simplex assigned to each combination of k time points. Quantity characteristics of the simplex (SIM) are encoded into color values (COL), and displays the colors in a combinatorial time lattice (CTL). Each lattice point (GP) is displayed with the color encoded for the assigned simplex.

An ECG system identifies and annotates cardiac electrophysiological signals in an ECG waveform from harmonic waveforms. Electrical impulses are received from a beating heart. The electrical impulses are converted to an ECG waveform. The ECG waveform is converted to a frequency domain waveform, which, in turn, is separated into two or more different frequency domain waveforms, which, in turn, are converted into a plurality of time domain cardiac electrophysiological subwaveforms and discontinuity points between these subwaveforms. The plurality of subwaveforms and discontinuity points are compared to a database of subwaveforms and discontinuity points for normal and abnormal patients. At least one subwaveform or one or more discontinuity points are identified as a normal or abnormal electrophysiological signal of the ECG waveform from the comparison. The ECG waveform is displayed along with one or more markers at a location of the at least one subwaveform or one or more discontinuity points.

A method and a wireless cardiac monitoring device to measure and transmit cardiac physiological signals of a subject. The device comprises a patch configured to be in contact with a skin surface of the subject. The patch comprises a plurality of electrodes and at least one wire-free module, embedded in the patch. The wire-free module comprises a patch orientation detection module to detect an orientation of the patch on the subject using a plurality of sensors. The wire-free module also comprises a processing module to select at least two pair of electrodes from the plurality of electrodes based on the detected orientation of the patch and process one or more bio-potential signals corresponding to the at least two pair of electrodes selected, as the physiological signals. The wire-free module further comprises a transmission module to transmit the physiological signals to an external device for further processing.

A method and a wireless cardiac monitoring device to measure and transmit cardiac physiological signals of a subject. The device comprises a patch configured to be in contact with a skin surface of the subject. The patch comprises a plurality of electrodes and at least one wire-free module, embedded in the patch. The wire-free module comprises a patch orientation detection module to detect an orientation of the patch on the subject using a plurality of sensors. The wire-free module also comprises a processing module to select at least two pair of electrodes from the plurality of electrodes based on the detected orientation of the patch and process one or more bio-potential signals corresponding to the at least two pair of electrodes selected, as the physiological signals. The wire-free module further comprises a transmission module to transmit the physiological signals to an external device for further processing.

Embodiments relate to a system and method for electrocardiogram image-based patient evaluation, wherein: a source electrocardiogram image of a target patient is acquired by a user terminal; a server is requested by the user terminal to evaluate the target patient, the request including the source electrocardiogram image; electrocardiogram image-based evaluation information of the patient is generated by the server, the evaluation information of the target patient is transmitted to the user terminal; and reported feedback based on the evaluation information of the target patient is provided by the user terminal.

Embodiments relate to a system and method for electrocardiogram image-based patient evaluation, wherein: a source electrocardiogram image of a target patient is acquired by a user terminal; a server is requested by the user terminal to evaluate the target patient, the request including the source electrocardiogram image; electrocardiogram image-based evaluation information of the patient is generated by the server, the evaluation information of the target patient is transmitted to the user terminal; and reported feedback based on the evaluation information of the target patient is provided by the user terminal.

Disclosed herein, in some aspects, are systems and methods for detecting, monitoring, and managing a cardiac health status for a subject using ECG data. In some embodiments, the system receives health parameter measurements from one or more devices that are then used by a cardiac health tool (CHT) to determine a cardiac health status. Exemplary health parameter measurements include electrocardiogram (ECG) data from an ECG device and/or weight (from a weight scale for example). As described herein, in some embodiments, determining the cardiac health status includes a) detecting a cardiac condition in the subject, b) predicting a risk of a subject developing a cardiac condition (cardiac condition risk), and/or c) temporal monitoring of a cardiac health status for a subject. In some embodiments, the cardiac health tool is configured to determine the efficacy of a treatment or therapy applied to reduce the severity and/or risk of a cardiac condition.