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Method and device for acquiring data scanned by flying focus computed tomography (CT) machine

A technology of scanning data and acquisition method, applied in computer tomography scanner, echo tomography and other directions, can solve the problem of difficulty in realizing the integration time of single circumferential sampling, and achieve the effect of improving resolution

Active Publication Date: 2012-10-17
NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

However, when the data acquisition speed is fast, it is difficult to implement a single circumferential sampling limited by the integration time

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  • Method and device for acquiring data scanned by flying focus computed tomography (CT) machine
  • Method and device for acquiring data scanned by flying focus computed tomography (CT) machine
  • Method and device for acquiring data scanned by flying focus computed tomography (CT) machine

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Embodiment Construction

[0059] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0060]The scanning data acquisition method and device of the flying-focus CT machine of the present invention use the three-focus flying mode to scan the object to obtain scanning data; the obtained flying scanning data is circulated according to the number of each cycle as the basic operation unit processing, reorganizing the projection view data of a circle, and interpolating the data of four projection views through the scanning data of different focal points in the processing of each basic operation unit, thereby reorganizing the projection view data.

[0061] Firstly, the principle of the flying focus in the prior art will be briefly described below.

[0062] In the flying focus technology, the focal points...

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Abstract

The invention relates to the technical field of computed tomography (CT), and discloses a method and a device for acquiring data scanned by a flying focus CT machine. The method comprises the following steps of: scanning a detected body in a three-focus flying mode, and acquiring scanned data; performing circulation processing on the acquired flying scanned data by taking the number of each circulation period as a basic operation unit, and reconstructing projection view data; and interpolating the scanned data of different focuses during processing by each basic operation unit to obtain data of four projection views. By using the method and the device, the rotation time of a stander is relatively short; the data scanned by the CT machine can be easily sampled; and the resolution in each direction can be guaranteed.

Description

technical field [0001] The present invention relates to the technical field of CT (Computed Tomography, computer x-ray tomography technology), more specifically, to a scanning data collection method and device of a flying-focus CT machine. Background technique [0002] Flying focus technology is to improve the CT (Computed Tomography, computerized x-ray tomography) in the case of not changing the number of physical channels and rows of the detector (that is, the number of samples of the detector in the x-axis direction and the z-axis direction). A technology of x-axis and / or z-axis direction resolution, which periodically shifts the X-ray focus position to obtain double sampling density data in the x-axis direction and z-axis direction in one scan, thereby improving x Axis and / or z-axis resolution. [0003] The basic principle of the flying focus technology is as follows: figure 1 As shown, the whole system includes: a frame 100 , a bulb 101 , and a detector 102 . An anod...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
Inventor 楼珊珊佟丽霞赵江魏
Owner NEUSOFT MEDICAL SYST CO LTD
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