A large data-based cone beam CT scatter correction system and correction method

A scatter correction and big data technology, applied in the fields of radiodiagnostic instruments, radiodiagnostic image/data processing, medical science, etc., can solve the problems of increasing the patient's exposure dose and achieve the effect of accurate reconstruction results

Active Publication Date: 2019-07-30
天津金曦医疗设备有限公司
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Problems solved by technology

[0017] The disadvantage of this method is that an additional scan increases the patient's exposure dose, and at the same time, due to the existence of movement, correction artifacts may be introduced

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  • A large data-based cone beam CT scatter correction system and correction method
  • A large data-based cone beam CT scatter correction system and correction method

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Embodiment Construction

[0050] The present invention will be further described in detail through the accompanying drawings and specific embodiments below.

[0051]As shown in the figure, this embodiment provides a cone beam CT scatter correction system based on big data, including an interconnected cone beam CT system and a local computer, wherein the cone beam CT system includes an X-ray focal point 1 and a flat panel detector 7 , the measured object 5 is between the X-ray focal point 1 and the flat panel detector 7, and the intrinsic filter 2, the front collimator 3 and the bow-tie compensator 4 are arranged in sequence between the X-ray focal point and the measured object, and the measured object and An anti-scatter grid 6 is set between the flat-panel detectors; the specifications and parameters of the anti-scatter grid are simulated and calculated by the Monte Carlo method; The cloud server on the cloud server includes a cloud computing server connected to a cloud storage server. A local scatter...

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Abstract

The invention discloses a big data based cone-beam CT scattering correction system and further discloses a big data based cone-beam CT scattering correction method. The big data based cone-beam CT scattering correction system comprises a cone-beam CT system and a computer system. The method is achieved by adopting the correction system. Cloud computing and cloud storage technologies are adopted to establish a local scattering database and a cloud scattering database which are mutually synchronous, big data of patient and examination data and scattering data is formed, the scattering data mostly close to an examined object is adjusted to estimate scattering projection contributions through appropriate two-dimensional calculation in the reestablishment process, scattering estimation with smaller errors can be given on the premise that the data volume is sufficient, and accordingly accurate reestablishment results can be rapidly obtained through cone-beam CT.

Description

technical field [0001] The invention relates to a cone-beam CT scattering correction system and correction method based on big data, belonging to the technical field of cone-beam CT detection. Background technique [0002] The X-ray exposure area of ​​cone-beam CT is much larger than that of fan-beam CT due to the increase of axial coverage, so the scattering component contributes a lot to the total energy detected by the detector, resulting in scattering artifacts, reduced contrast, and reduced image details. Problems such as inaccurate CT values ​​will eventually reduce image quality. Therefore, cone-beam CT is often corrected for scatter in a number of ways. The goal of scatter correction is to meet the needs of user applications in terms of correction effect, dose, and calculation time. [0003] Commonly used scatter correction methods include: [0004] 1. Air gap method: Because the scattering is not along the line from the light source to the detector, increasing th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/035A61B6/4085A61B6/4208A61B6/483A61B6/52A61B6/582
Inventor 曹文田
Owner 天津金曦医疗设备有限公司
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