A wearable device and a magnetic resonance electrocardiogram gating system based on the wearable device

A wearable device, magnetic resonance technology, applied in the direction of cardiac catheterization, medical science, diagnosis, etc., can solve the problems of operation process limitation, cumbersome, high cost, and achieve the effect of simple structure

Active Publication Date: 2020-09-25
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] No matter which method is adopted, accurate acquisition of ECG signals is the primary condition for the realization of ECG gating. In the current magnetic resonance system, the chest electrode acquisition method used for ECG signal acquisition for ECG gating is relatively cumbersome. There are certain restrictions in the operation process, and it is necessary to pay attention to the installation and layout positions of multiple lead wires
And the cost is relatively high, which increases the total cost of the magnetic resonance system

Method used

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  • A wearable device and a magnetic resonance electrocardiogram gating system based on the wearable device
  • A wearable device and a magnetic resonance electrocardiogram gating system based on the wearable device
  • A wearable device and a magnetic resonance electrocardiogram gating system based on the wearable device

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Embodiment 1

[0049] Embodiment 1 provided by the present invention is an embodiment of a wearable device provided by the present invention. The wearable device 1 can be set in the shape of a common bracelet and worn on the tester's wrist, or it can be set in other shapes , corresponding to other parts worn by the tester that can collect PPG signals.

[0050] The wearable device 1 includes a PPG signal acquisition unit 11 , an ECG signal R-wave pulse construction unit 12 and a communication unit 13 .

[0051] The R-wave pulse construction unit 12 of the electrocardiographic signal generates the R-wave pulse of the electrocardiographic signal after delaying the PPG signal according to a set delay time.

[0052] Specifically, considering that there are individual differences in the delay time between the peak of the PPG signal and the R-wave pulse of the ECG signal, the delay time set in the R-wave pulse construction unit 12 of the ECG signal is adjustable.

[0053] Further, in order to impr...

Embodiment 2

[0062] Embodiment 2 provided by the present invention is an embodiment of a magnetic resonance electrocardiogram gating system based on a wearable device provided by the present invention. The magnetic resonance electrocardiographic gating system includes the wearable device 1 and the Upper computer 2. The wearable device 1 sends the generated R-wave pulse of the ECG signal to the host computer 2 .

[0063] preferred, such as Figure 5 Shown is a structural block diagram of a wearable device-based magnetic resonance electrocardiogram gating system provided by an embodiment of the present invention, as shown in Figure 6 Shown is the flowchart of the construction of the ECG R wave pulse signal provided by the embodiment of the present invention, which is composed of Figure 5 and Figure 6 It can be seen that when the communication unit 13 of the wearable device 1 includes the first photoelectric conversion module 131 , the system further includes the second photoelectric co...

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Abstract

The invention relates to a wearable device and a wearable-device-based magnetic resonance electrocardiogramgate control system.The wearable device comprises a PPG (photoplethysmograph) signal acquisition unit, an R-wave pulse building unit of an electrocardiogram signal and a communication unit; the PPG signal acquisition unit collects a PPG signal of a tester, and sends the PPG signal to the R-wave pulse building unit of the electrocardiogram signal; after the PPG signal is subjected to time delay by the R-wave pulse building unit of the electrocardiogram signal according to the set time delay duration, an R-wave pulse of the electrocardiogram signal is generated; and the communication unit transmits the R-wave pulse of the electrocardiogram signal to a host computer of the corresponding magnetic resonance electrocardiogram gate control system. The R-wave pulse of the ECG (Electrocardiogram) signal is obtained afterthe PPG signal, collected by the wearable device, of thetester is subjected to time delay. The wearable device is simple in structure, low in price and easy to operate, and the tester does not need to maintain the state of attachingelectrodes on chest during the detection process.

Description

technical field [0001] The invention relates to the field of magnetic resonance systems, in particular to a wearable device and a magnetic resonance electrocardiogram gating system based on the wearable device. Background technique [0002] In the scanning process of the scanner of the magnetic resonance system, in order to reconstruct a clear image, the scanner often repeatedly transmits a series of radio frequency pulse sequences within a long scanning time, and then reconstructs an image by superposition, and it needs to be During the scanning process, the imaging object is required to remain still. When imaging the heart, the radio frequency pulse sequences of each scan randomly appear at different moments of the cardiac cycle, and the obtained signals also come from different moments in the cardiac process, which eventually leads to the result of multiple asynchronous signal superposition. Heart images will have severe motion artifacts. A widely used effective method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055A61B5/021A61B5/0402
CPCA61B5/02108A61B5/055A61B5/681A61B5/7285A61B5/318
Inventor 高军峰张家琦党鑫田洪君邓春平荣凡稳陈军波张崇张绪
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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