Method for determining time point of heart movement and corresponding apparatus

Abstract

A method for determining a time point of a heart movement is described, wherein an EKG signal showing the heart movement is received. A first time point is determined, after which a mechanical signal characterizing the heart movement will probably be received, as a function of the received EKG signal. A mechanical signal is also received after the determined first time point. The time point of a heart movement can be concluded based on the receive time point of the mechanical signal. An apparatus for determining a time point of a heart movement is also described. The apparatus has a first receive facility, a timing facility, a second receive facility, and an evaluation facility. The evaluation facility is configured to determine the receive time point of the mechanical signal and to determine a time point of a heart movement based on the determined receive time point of the mechanical signal.

Description

technical field [0001] The invention relates to a method for determining the moment of heart movement. Furthermore, the invention relates to a device for determining the moment of a heart movement. Furthermore, the invention relates to a method for triggering an imaging system. Finally, the invention relates to an imaging system. Background technique [0002] In medical imaging of the heart, a picture of a moving object, ie a beating heart, must be recorded. Failure to account for motion can result in blurry images. The mentioned problems occur, for example, with imaging systems in computed tomography, magnetic resonance tomography, positron emission tomography and in ultrasound systems. Especially in the case of CT recordings, it is disadvantageous if the recordings have to be repeated, since in this case the patient is exposed to increased radiation doses. [0003] Typically, an attempt is made to prospectively synchronize or trigger the capture of the heart by electr...

AI Technical Summary

Problems solved by technology

That is, in the case of direct measurement of physical parameters that characterize the mechanical excitation of the heart, there is also the problem of being able to ensure reliable prediction of the heart's motion in real time

In addition, it is difficult in this case to react to specificities, such as premature beats, which are usually accompanied by a changed course of muscle contraction and are thus reflected very differently in the physiological signal (niederschlagen).

Images