In an aspect, the present disclosure provides a method comprising: (a) identifying a first negative and positive electromagnetic dipoles in a first electromagnetic field map associated with a heart of the individual at a first time; (b) identifying a second negative and positive electromagnetic dipoles in a second electromagnetic field map associated with the heart of the individual at a second time; (c) determining a first angle based on the first negative and positive electromagnetic dipoles; (d) determining a second angle based on the second negative and positive electromagnetic dipoles; and (e) determining a presence, an absence, or a likelihood of coronary artery disease in the individual, based at least in part on (i) whether the first angle differs from the second angle by at least 100 degrees, or (ii) whether there is a presence of a third electromagnetic dipole in the first or the second electromagnetic field map.

Systems for treating a cardiac condition of a patient are provided. The system comprises an implantable device for delivering energy to the patient’s heart, and an external patient device configured to wirelessly communicate with the implantable device. The system can further comprise a clinician device for implanting the implantable device in the patient. The cardiac condition treated by the system can comprise atrial fibrillation. Methods of treating a cardiac condition are also provided.

The defibrillating electrical apparatus is controlled such that the enabling signal generator generates an enabling signal for the (n+1)-th R wave (R.sub.n+1) when and after a first time interval (T.sub.1) as a time interval from the n-th R wave (R.sub.n) to the (n+1)-th R wave (R.sub.n+1) of an electrocardiographic waveform (50) exceeds a first predetermined time period, if the first time interval (T.sub.1) is equal to or less than the first predetermined time period, the defibrillating electrical apparatus is controlled such that the enabling signal generator generates an enabling signal for the (n+2)-th R wave (R.sub.n+2) when and after a second time interval (T.sub.2) as a time interval from the n-th R wave (R.sub.n) to the (n+2)-th R wave (R.sub.n+2) of an electrocardiographic waveform (50) exceeds a second predetermined time period.

The defibrillating electrical apparatus is controlled such that the enabling signal generator generates an enabling signal for the (n+1)-th R wave (R.sub.n+1) when and after a first time interval (T.sub.1) as a time interval from the n-th R wave (R.sub.n) to the (n+1)-th R wave (R.sub.n+1) of an electrocardiographic waveform (50) exceeds a first predetermined time period, if the first time interval (T.sub.1) is equal to or less than the first predetermined time period, the defibrillating electrical apparatus is controlled such that the enabling signal generator generates an enabling signal for the (n+2)-th R wave (R.sub.n+2) when and after a second time interval (T.sub.2) as a time interval from the n-th R wave (R.sub.n) to the (n+2)-th R wave (R.sub.n+2) of an electrocardiographic waveform (50) exceeds a second predetermined time period.

Various catheters are provided herein for recording, mapping, and/or ablating target tissue to reduce or eliminate unwanted electrical impulses. In one embodiment, a catheter can have a handle, an elongate body, and an end effector. The end effector has expanded and contracted configurations and can rotate about the elongate body. A plurality of electrodes can also be disposed on the end effector for recording, mapping, and/or ablating target tissue surrounding the catheter. The handle can guide the end effector through transitioning between the configurations and rotating about the elongate body.

An adaptive real-time radial k-space sampling trajectory (ARKS) can respond to a physiologic feedback signal to reduce motion effects and ensure sampling uniformity. In this adaptive k-space sampling strategy, the most recent signals from an ECG waveform can be continuously matched to the previous signal history, new radial k-space locations c were determined, and these MR signals combined using multi-shot or single-shot radial acquisition schemes. The disclosed methods allow for improved

The present technology relates to a communication device, a communication method, and a program that enable improvement in security of electric field communication. Biological information about a user is detected in accordance with an action of the user, and electric field communication being performed by an electric field communication unit is controlled in accordance with the biological information. The present technology can be applied to communication devices that perform electric field communication using an electric field, such as intra-body communication using the human body as a communication medium.

A single-arm two-electrode blood pressure measuring device and a measuring method thereof are provided. The single-arm two-electrode blood pressure measuring device includes two sensing electrodes, a photoplethysmogram (PPG) sensor, an analog signal processing unit, a filter and amplifier unit, an analog-to-digital conversion unit, and a digital signal processing unit. The single-arm two-electrode blood pressure measuring method includes: providing the two sensing electrode to sense an electrocardiography(ECG) signal of an user; providing the PPG sensor to sense a PPG signal; inverting a common mode signal between the two sensing electrodes and outputting to a filter of the analog signal processing unit by a differential amplifier; filtering and amplifying the ECG signal and the PPG signal by the filter and amplifier unit; and detecting multiple feature points of the ECG signal and the PPG signal to generate an estimated blood pressure value by the digital signal processing unit.

A single-arm two-electrode blood pressure measuring device and a measuring method thereof are provided. The single-arm two-electrode blood pressure measuring device includes two sensing electrodes, a photoplethysmogram (PPG) sensor, an analog signal processing unit, a filter and amplifier unit, an analog-to-digital conversion unit, and a digital signal processing unit. The single-arm two-electrode blood pressure measuring method includes: providing the two sensing electrode to sense an electrocardiography(ECG) signal of an user; providing the PPG sensor to sense a PPG signal; inverting a common mode signal between the two sensing electrodes and outputting to a filter of the analog signal processing unit by a differential amplifier; filtering and amplifying the ECG signal and the PPG signal by the filter and amplifier unit; and detecting multiple feature points of the ECG signal and the PPG signal to generate an estimated blood pressure value by the digital signal processing unit.

Methods and systems are provided for real-time biological sensor data transmission and analysis. In one example, a method includes obtaining biological sensor data of a patient from one or more sensors of a health monitoring device and transmitting the biological sensor data in real-time from a patient's transmitting device to a clinician's remote receiving device that is wirelessly communicating with the transmitting device. Further, at the transmitting device, responsive to a request for analysis and/or storage from the remote receiving device, transmitting the real-time biological sensor data stream or a recording of the real-time biological sensor data to a computing sever for analysis and/or storage.