Method for ECG-triggering a measuring sequence of a magnetic resonance device
AssigneeSiemens Aktiengesellschaft
InventorsMichael Frank, Stefan Merkel, Ernst Mustafa, Helmut Wrobel
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Abstract
Method for ECG triggering a measuring sequence of a magnetic resonance device, with ECG signals of a patient being detected over two channels, with the triggering of the measuring sequence being carried out when the ECG signal of at least one channel, said ECG signal being subjected to a digital signal processing, exceeds a threshold value, and at the same time the derivation of the ECG signal or the norm of the derivation of the ECG signal lies within a defined interval in both channels.
Claims15
1-9. (canceled)
A method for ECG triggering of a measuring sequence of a magnetic resonance device, comprising:
- detecting a plurality of ECG signals of a patient via a plurality of channels;
- generating a plurality of derivations or a plurality of norms of the derivations of the ECG signals;
- and
- signal processing the ECG signals to create a plurality of threshold values of the ECG signals,
- wherein the triggering of the measuring sequence is carried out when one of the ECG signals exceeds a corresponding threshold value and the derivations or the norms of the derivations of the ECG signals are within a plurality of intervals of the channels.
A magnetic resonance device with ECG triggering of a measuring sequence of the magnetic resonance device, comprising:
- a plurality of ECG detectors for detecting a plurality of ECG signals of a patient via a plurality of channels;
- a plurality of derivation creators for generating a plurality of derivations or a plurality norms of the derivations of the ECG signals;
- a plurality of low-pass filters for filtering an interference occurring in the magnetic resonance device from the ECG signals;
- a plurality of derivation norm creators for calculating a plurality of derivation norm functions of the ECG signals;
- and
- a plurality of interpolators for calculating a plurality of threshold values of the ECG channels,
- wherein a triggering of the measuring sequence of the magnetic resonance device is carried out when one of the ECG signal exceeds a corresponding threshold value and the derivations or the norms of the derivation of the ECG signals are within a plurality of intervals of the channels.
The magnetic resonance device as claimed in claim 21, wherein one of the intervals of the channels is defined based on a lower and upper limit values of the one ECG signal.
The magnetic resonance device as claimed in claim 22, wherein the lower and upper limit values of the one interval are determined and stored in a storage device.
Dependencies are inferred from the claim text.