A mouse heart imaging system and method based on prospective ECG gating

An imaging system, mouse technology, applied in radiological diagnostic instruments, computerized tomography scanners, radiological diagnostic image/data processing, etc., can solve the problem of increasing X-ray exposure, slow acquisition speed, and reducing signal noise of reconstruction results Ratio and other issues to achieve the effect of improving system efficiency

Active Publication Date: 2020-12-08
XIDIAN UNIV
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Problems solved by technology

[0003] To sum up, the problems existing in the existing technology are: traditional Micro-CT imaging has too slow acquisition speed, which greatly increases the exposure of X-rays and reduces the efficiency; the contrast of the image is low, which reduces the confidence of the reconstruction result. noise ratio

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  • A mouse heart imaging system and method based on prospective ECG gating
  • A mouse heart imaging system and method based on prospective ECG gating
  • A mouse heart imaging system and method based on prospective ECG gating

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0052] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] Such as figure 1 As shown, the mouse heart imaging system based on prospective ECG gating provided by the embodiment of the present invention includes:

[0054] The front-end electrocardiographic signal acquisition module 1 is used to obtain real-time heartbeat information of mice during CT image acquisition;

[0055] DSP signal processing board 2 generates a trigger level by acquiring the ECG information of the mouse, and triggers the X-ray detector to complete the acquisitio...

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Abstract

The invention belongs to the technical field of image processing and discloses a mouse cardiac imaging system and method based on prospective ECG (electrocardiogram) gating. The system comprises: an ECG signal acquisition front end for acquiring mouse real-time heartbeat information during CT (computed tomography) image acquisition; a control board that acquires mouse ECG information to generate a triggering level and trigger an X-ray detector so as to finish mouse projection image acquisition; a Micro-CT acquisition system for reconstructing 360 pieces of projection data. Motion phase of mouse heart is judged by capturing ECG information of a live mouse and extracting R-wave peaks of the mouse ECG signals; the X-ray detector is triggered by the R-wave peaks to perform projection data sequence acquisition on the mouse heart via the Micro-CT imaging technology, multiple phase images of the mouse at each angle within the whole cardiac motion period are acquired, and the reconstructed multiple phase images of the mouse heart within the whole heartbeat period are restored.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a mouse heart imaging system and method based on prospective ECG gating. Background technique [0002] As a medical imaging system for small animals, Micro-CT has the characteristics of high imaging resolution compared with traditional medical CT. The spatial resolution can reach the micron level, and its reconstruction accuracy is also higher than that of traditional medical CT. Micro-CT imaging is of great significance to cardiac imaging, but there are some problems in traditional Micro-CT imaging: due to the use of gating technology for time-sharing extraction of projection data, traditional dynamic Micro-CT systems have only The problem of being able to acquire an image, which leads to too slow acquisition speed, greatly increases the exposure of X-rays and reduces the efficiency; the shortening of acquisition time means that the exposure time is reduced,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00A61B6/03
CPCA61B6/03A61B6/503A61B6/508A61B6/52A61B6/541
Inventor 朱守平樊宇吕高旗王民曹旭
Owner XIDIAN UNIV
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