Abstract: Techniques are disclosed for adjusting a transmission frequency of a physiological monitoring unit, which includes a capture unit and a receiver unit. The capture unit and the receiver unit are wirelessly connected together and are configured to exchange data on the transmission frequency by means of a programming unit.

Abstract: In a method for determining R-waves in an ECG signal, at least one reference ECG signal is measured, at least one reference breathing signal is measured, at least one reference R-wave is determined using the reference ECG signal and the reference breathing signal, at least one reference value is determined using the reference ECG signal and the reference breathing signal, at least one comparison rule is credited based on the at least one reference value, ECG signals are measured and breathing signals are measured in which R-waves are to be determined, the measured ECG signals and breathing signals are compared with the at least one reference value using the at least one comparison rule, and at least one R-wave is determined using the measured ECG signals and breathing signals.

Abstract: Techniques are disclosed for adjusting a transmission frequency of a physiological monitoring unit, which includes a capture unit and a receiver unit. The capture unit and the receiver unit are wirelessly connected together and are configured to exchange data on the transmission frequency by means of a programming unit.

Abstract: In a method and apparatus for determining a physiological activity signal in a subject using various movement sensors that each transmit a temporal movement signal, a physiological reference signal is determined from the various movement signals that best depicts a physiological movement of the subject, the movement sensor that generates the physiological reference signal is identified as a physiological reference sensor, at least one physiological addition signal is determined from the temporal movement signals that is similar to the physiological reference signal up to a limit, and the physiological reference signal and the at least one addition signal are added to form the physiological activity signal.

Abstract: In a method and apparatus for determining a physiological activity signal in a subject using various movement sensors that each transmit a temporal movement signal, a physiological reference signal is determined from the various movement signals that best depicts a physiological movement of the subject, the movement sensor that generates the physiological reference signal is identified as a physiological reference sensor, at least one physiological addition signal is determined from the temporal movement signals that is similar to the physiological reference signal up to a limit, and the physiological reference signal and the at least one addition signal are added to form the physiological activity signal.

Abstract: In a method for determining R-waves in an ECG signal, at least one reference ECG signal is measured, at least one reference breathing signal is measured, at least one reference R-wave is determined using the reference ECG signal and the reference breathing signal, at least one reference value is determined using the reference ECG signal and the reference breathing signal, at least one comparison rule is credited based on the at least one reference value, ECG signals are measured and breathing signals are measured in which R-waves are to be determined, the measured ECG signals and breathing signals are compared with the at least one reference value using the at least one comparison rule, and at least one R-wave is determined using the measured ECG signals and breathing signals.

Abstract: A medical imaging system includes a detector unit, and a patient receiving area at least partly surrounded by the detector unit. The detector unit defines an imaging area within the patient receiving area. The medical imaging system also includes a movement detection unit for detecting a movement such as a heart movement and/or a breathing movement of a patient able to be positioned within the patient receiving area. The movement detection unit includes a radar unit with a radar transmit unit and a radar receive unit. The radar transmit unit includes at least one transmit antenna, and the radar receive unit includes at least one receive antenna. The at least one transmit antenna and/or the at least one receive antenna is disposed outside the imaging area.

Abstract: A measuring device is provided. The measuring device has at least one sensor unit for capturing a cardiac signal, a postprocessing unit and a signal transfer unit for signal transfer between the at least one sensor unit and the postprocessing unit. The at least one sensor unit has at least one acoustic sensor element.

Abstract: An interference value that occurs during a measurement using a medical imaging examination device is determined. At least one EKG signal is measured using a capacitive EKG sensor during a measurement using the medical imaging examination device. The measured EKG signal is corrected using the determined interference value. The corrected EKG signal is displayed or stored.

Abstract: A measuring device for a magnetic resonance device is provided. The measuring device has a sensor unit. The sensor unit includes at least one acoustic sensor element for detecting heart sounds of a patient. The sensor unit also includes a resonating body unit. The resonating body unit has a hollow space for filtering interfering signals emitted by the magnetic resonance device from the heart sounds of the patient.

Abstract: A method for generating a trigger signal for a magnetic resonance measurement by an R wave of an EKG signal is proposed. The EKG signal is captured by an algorithm manager. The algorithm manager includes at least a first trigger instance having a trigger algorithm. EKG signals from at least two different EKG channels are processed by the trigger algorithm. The algorithm manager includes at least a further trigger instance for capturing the EKG signal. The further trigger instance has at least one further trigger algorithm for processing EKG signals from at least two different EKG channels. The trigger signal is generated by selecting a trigger instance from the different trigger instances.

Abstract: A method for identifying R waves in an ECG signal is proposed. An ECG measuring instrument measures ECG signals of a patient in which R waves are to be detected. The measured ECG signals are compared with respective reference quantities based on at least two comparison rules. The second comparison rule is dependent on a result of a first comparison conducted according to a first comparison rule. A signal that an R wave has been detected is issued if the first and the second comparison rules are fulfilled. Making the second comparison rule dependent on the result of the first comparison rule enables an adept response to changes of measurement conditions. These changes can be taken into account in further comparisons. Therefore the detection of R waves in an ECG signal can be optimized, leading to an improvement in the image quality in ECG-triggered MR examinations.

Abstract: A measuring device for a magnetic resonance device is provided. The measuring device has a sensor unit. The sensor unit includes at least one acoustic sensor element for detecting heart sounds of a patient. The sensor unit also includes a resonating body unit. The resonating body unit has a hollow space for filtering interfering signals emitted by the magnetic resonance device from the heart sounds of the patient.

Abstract: A measuring apparatus for a magnetic resonance apparatus is proposed. The measuring apparatus has a charging apparatus and a mobile sensor unit for detecting a physiological signal of a patient. The mobile sensor unit includes a sensor element and an energy storage element which supplies electrical energy to the sensor element in an operating mode. The charging apparatus in a charging process increases a charging state of the energy storage element of the mobile sensor unit so that the mobile sensor unit can be coupled to the charging apparatus which has an energy buffering unit.

Abstract: A measuring device is provided. The measuring device has at least one sensor unit for capturing a cardiac signal, a postprocessing unit and a signal transfer unit for signal transfer between the at least one sensor unit and the postprocessing unit. The at least one sensor unit has at least one acoustic sensor element.

Abstract: A method for identifying R waves in an ECG signal is proposed. An ECG measuring instrument measures ECG signals of a patient in which R waves are to be detected. The measured ECG signals are compared with respective reference quantities based on at least two comparison rules. The second comparison rule is dependent on a result of a first comparison conducted according to a first comparison rule. A signal that an R wave has been detected is issued if the first and the second comparison rules are fulfilled. Making the second comparison rule dependent on the result of the first comparison rule enables an adept response to changes of measurement conditions. These changes can be taken into account in further comparisons. Therefore the detection of R waves in an ECG signal can be optimized, leading to an improvement in the image quality in ECG-triggered MR examinations.

Abstract: A method for generating a trigger signal for a magnetic resonance measurement by an R wave of an EKG signal is proposed. The EKG signal is captured by an algorithm manager. The algorithm manager includes at least a first trigger instance having a trigger algorithm. EKG signals from at least two different EKG channels are processed by the trigger algorithm. The algorithm manager includes at least a further trigger instance for capturing the EKG signal. The further trigger instance has at least one further trigger algorithm for processing EKG signals from at least two different EKG channels. The trigger signal is generated by selecting a trigger instance from the different trigger instances.

Abstract: A method for identifying a characteristic profile of an R-wave in an EKG signal is proposed. A temporal sequence of measurement values is recorded and stored with associated time value. A number of values for identified temporal derivative and their respective time values is identified in the stored measurement values. One of the values for identified temporal derivative is selected as an exemplary value. The selection includes at least one plausibility test. A sub-sequence of the stored measurement values is selected as a characteristic profile as a function of the time value associated with the exemplary value. The combination of identifying possible values by their derivative with a plausibility test makes the method particularly robust.

Abstract: The invention relates to an EKG measurement device. The EKG measurement device comprises a number of EKG electrodes and a common-mode measurement unit connected on its input side to the EKG electrodes. Inventively an EKG trigger unit is connected on its input side to the EKG electrodes and to the common-mode measurement unit.

Abstract: In a method and medical data acquisition system for the correction of interference signals (in particular those caused by gradient coils) in a magnetic resonance apparatus given the determination of a point in time in the cardiac cycle of a patient by the acquisition of cardiac noises with a sound sensor arranged on the patient, a calculated and/or pre-measured interference signal that describes the interference noise of the gradient coils is obtained and is subtracted from a raw signal measured by the sound sensor.