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Data processing method and data processing device for CT scanning

A CT scanning and data processing technology, applied in the field of CT medical imaging, can solve the problems of long CT scanning time and consumption, and achieve the effects of reducing radiation dose, removing noise, and reducing CT projection data

Active Publication Date: 2016-10-26
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a data processing method and device for CT scanning to solve the problem in the prior art that it takes longer CT scanning time to collect more CT projection data

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  • Data processing method and data processing device for CT scanning
  • Data processing method and data processing device for CT scanning

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Embodiment Construction

[0020] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0021] figure 1 The implementation flow of the CT scan data processing method provided by the embodiment of the present invention is shown, and the details are as follows:

[0022] In S101 , CT scanning is performed on the object to be scanned, and N pieces of projection images are acquired, where N is an integer greater than 1.

[0023] In S102, based on the N projection images, CT reconstructi...

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Abstract

The invention is applicable to the technical field of CT medical imaging, and provides a data processing method and a data processing device for CT scanning. The method comprises the following steps: performing CT scanning on a scanned object to get N projection images, wherein N is an integer greater than 1; performing CT reconstruction through an iteration method based on the N projection images, and correcting an intermediate image f for each iteration; and outputting a CT reconstruction image after iteration of the CT reconstruction is terminated. According to the invention, CT reconstruction is implemented through an iteration method, and the gradient images of the intermediate image are trained during each iteration, so that noise in the CT projection images is removed effectively, and useful information in the CT projection images is enhanced. Therefore, CT projection data needing to be acquired is reduced, the CT scanning time is shortened, the motion artifact of the scanned object is reduced, and the radiation dose is reduced.

Description

technical field [0001] The invention belongs to the technical field of CT medical imaging, and in particular relates to a data processing method and device for CT scanning. Background technique [0002] Computed Tomography (CT) is a technical means to obtain the internal structure information of objects in a non-destructive way. It has the characteristics of high resolution, high sensitivity and multi-level, and is widely used in various medical and clinical fields. One of the largest medical imaging diagnostic equipment. [0003] X-rays are needed in the CT scanning process. As people gradually understand the potential hazards of radiation, the rationality of CT radiation dose has attracted more and more attention. The rational use of low dose (As Low As Reasonably Achievable, ALARA) principle is It is required to minimize the radiation dose to patients on the premise of satisfying clinical diagnosis. However, currently in the field of CT medical imaging, due to the low p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
CPCG06T11/006
Inventor 胡战利梁栋郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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