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Ultrasonic device for detecting the heartbeat of a patient

a technology ultrasonic devices, which is applied in the field of ultrasonic devices for detecting the heartbeat of patients, can solve the problems of deteriorating the detection of the heartbeat, superimposing a rather high level of interference, and no longer serving, so as to improve the image quality, facilitate the construction, and slow the imaging method

Inactive Publication Date: 2020-03-19
UNIVERSITAETSKLINIKUM HAMBURG EPPENDORF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The device provides a reliable and accurate detection of heartbeats, improving image quality by minimizing motion artifacts and enabling continuous fetal heart monitoring during MRI scans, even in the presence of significant noise and movement.

Problems solved by technology

The high magnetic and electromagnetic fields involved in the MRI imaging superimpose a rather high level of interference onto the weak electrical signals that have been picked up from the skin of the patient.
In addition, electrolytes in the blood of the patient represent moving charges that generate even more interference in combination with the high magnetic field.
Both types of interference deteriorate the detection of the heartbeat to the point where it can no longer serve as a reliable trigger signal for the MRI imaging.
In addition, when the heart of an unborn fetus is to be imaged using MRI, the skin of the fetus is not accessible for picking up an electrocardiogram, so no trigger signal for the MRI imaging is available at all.

Method used

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  • Ultrasonic device for detecting the heartbeat of a patient
  • Ultrasonic device for detecting the heartbeat of a patient
  • Ultrasonic device for detecting the heartbeat of a patient

Examples

Experimental program
Comparison scheme
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example 1

[0041]A device for detecting the heartbeat of a patient, preferably during imaging in a magnetic resonance imaging, MRI, apparatus or other imaging apparatus, comprising a transmitter for ultrasonic waves, a receiver for Doppler-shifted ultrasonic waves, and the evaluating arrangement / module coupled to the receiver and configured to evaluate the moment t1, t2, t3, t4 of a heartbeat of the patient out of the time-dependent signal from the receiver, wherein the evaluating arrangement / module comprise:[0042]a spectrum analyzer configured to extract at least one time-varying frequency component from the time-dependent signal delivered by the receiver; and[0043]a determining arrangement / module configured to evaluate the moment t1, t2, t3, t4 of the heartbeat from the variation of at least one of the frequency components in time.

example 2

[0044]The exemplary device according to Example 1, wherein the determining module can configure a computer processor to determine the moment ta, tb, tc, td where the at least one time-dependent frequency component assumes a maximum ma, mb, mc, md as the moment t1, t2, t3, t4 of the heartbeat.

[0045]The aspects described above and further aspects, features and advantages of the present disclosure may also be found in the exemplary embodiments which are described in the following with reference to the appended drawings and claims.

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Abstract

An exemplary device for detecting a heartbeat of a patient can be provided which can include a transmitter which can provide ultrasonic waves, a receiver that can receive Doppler-shifted ultrasonic waves, and a hardware analyzer coupled to the receiver and which can evaluate a particular moment of the heartbeat of the patient based on a time-dependent signal obtained from the receiver. The hardware analyzer device can comprise a spectrum analyzer configured to extract time-varying frequency component(s) from the time-dependent signal provided by the receiver, and a processing module which can evaluate the moment of the heartbeat based on a variation of at least one of the frequency components in time. The processing module can determine a window of interest (WOI) in time from the variation of the frequency component(s) in time, and the moment when the time-dependent signal provided by the receiver assumes a maximum within the WOI as the moment of the heartbeat.

Description

CROSS REFERENCE TO RELATED APPLICATION(S)[0001]This application is a continuation of U.S. patent application Ser. No. 16 / 062,372 filed on Jun. 14, 2018, which is National Phase and thus relates to, and claims the benefit and priority from International Patent Application No. PCT / EP2016 / 081147 filed on Dec. 15, 2016 that published as International Patent Publication No. WO 2017 / 102924 on Jun. 22, 2017, which claims the benefit and priority from European Patent Application No. 15200597.1 filed on Dec. 16, 2015. The entire disclosures of all these applications are incorporated herein by reference.FIELD OF THE PRESENT DISCLOSURE[0002]The present disclosure relates to an exemplary ultrasonic device for detecting the heartbeat of a patient that can preferably be used while the patient is being examined in an imaging apparatus, e.g., a magnetic resonance imaging (MRI) apparatus.BACKGROUND INFORMATION[0003]When the heart of a patient is examined using an MRI apparatus or other imaging appar...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B8/02G01R33/567A61B5/055A61B8/08G01R33/48A61B5/00
CPCA61B8/488A61B5/7292A61B5/0044A61B5/7285G01R33/4814G01R33/5673A61B8/02A61B8/5223A61B8/06A61B8/0883A61B5/055A61B8/4494
Inventor KORDING, FABIANYAMAMURA, JINRUPRECHT, CHRISTIANFEHRS, KAI-KRISTOPH
Owner UNIVERSITAETSKLINIKUM HAMBURG EPPENDORF