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Computed tomography imaging method

A CT imaging and imaging technology, which is applied in computerized tomography scanners, echo tomography, etc., can solve the problems of reducing radiation dose, and achieve the effects of reducing radiation dose, increasing speed, and high quality

Active Publication Date: 2012-12-26
SIEMENS SHANGHAI MEDICAL EQUIP LTD
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Problems solved by technology

[0003] A certain amount of X-ray radiation will be generated during CT imaging. Although the X-ray radiation dose of CT irradiated patients during guided interventional therapy is within the safe range, people still want to further reduce the radiation dose

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  • Computed tomography imaging method
  • Computed tomography imaging method
  • Computed tomography imaging method

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Embodiment Construction

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0034] CT-guided interventional therapy has two notable features: 1) During the interventional therapy, the same tissue of the patient is scanned repeatedly to obtain real-time images for monitoring the interventional therapy; 2) Only a small area of ​​the tissue changes, and because of the needle tip motion between scans, and the interaction between tissue and treatment energy, this small area is of clinical interest for interventional procedures.

[0035] Therefore, the inventor of the present invention proposes that after the interventional treatment starts, the CT equipment only partially scans the region of interest (that is, the above-mentioned small region) including the position of the needle tip to obtain an image of the region of interest, and then combines the image of interest...

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Abstract

The invention relates to the technical field of computed tomography (CT), in particular to a CT imaging method. The CT imaging method comprises the following steps: performing full-dose scanning before interventional therapy and reconstructing to obtain a full-dose image; after the interventional therapy begins, partially scanning a region of interest (ROI) comprising needle point position and reconstructing to obtain an ROI image; and merging the full-dose image and the ROI image. By the CT imaging method, the ROI is partially scanned after the interventional therapy begins, so the radiation dose is greatly reduced compared with full-dose scanning adopted in the prior art.

Description

technical field [0001] The invention relates to the field of computer X-ray tomography (Computed Tomography, CT) equipment, in particular to a CT imaging method. Background technique [0002] Interventional therapy is a technique for minimally invasive treatment of local lesions under the guidance of imaging equipment. Due to its less trauma and greater effect, interventional therapy has been more and more widely used and may become the mainstream in the future. treatment. As one of the common imaging devices, CT equipment is often used in the process of interventional treatment to image the site of interventional treatment due to the high quality of CT images. [0003] A certain amount of X-ray radiation will be generated during CT imaging. Although the X-ray radiation dose of CT irradiated patients during guided interventional therapy is within the safe range, people still want to further reduce the radiation dose. Contents of the invention [0004] In view of this, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
Inventor 张纪庄王薇
Owner SIEMENS SHANGHAI MEDICAL EQUIP LTD
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