Unlock instant, AI-driven research and patent intelligence for your innovation.

CT system device aiming at ROI scanning

A system device and X-ray technology, applied in the field of CT system devices for ROI scanning, can solve the problems of anti-scatter grid adjustment, inability to image and diagnose multiple ROI areas, and inability to further reduce the cost of CT scanning equipment, etc., to achieve The effects of high-quality and high-precision imaging, reduced production costs, and reduced equipment weight

Pending Publication Date: 2021-09-28
SHANGHAI JIAO TONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current ROI scanning can only realize the imaging of a single ROI area, such as the heart, solitary pulmonary nodule, etc., but cannot image and diagnose multiple ROI areas, such as multiple pulmonary nodules, multiple renal cysts, etc.
In addition, the existing technology only achieves the purpose of limiting the opening angle and direction of X-rays by adjusting the X-ray collimator, and does not make corresponding adjustments to the anti-scatter grid, which cannot further reduce the cost of CT scanning equipment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • CT system device aiming at ROI scanning
  • CT system device aiming at ROI scanning
  • CT system device aiming at ROI scanning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1As shown, considering the geometric relationship of the X-ray source 1, the scanned object 5, and the detector array 4 under a single projection angle, there are two local regions of interest that require high-precision and high-quality reconstruction, the first ROI region 6 and the second ROI The area 7, the first ROI area 6 and the second ROI area 7 are all deviated from the imaging center, and the traditional X-ray collimator cannot realize multi-ROI scanning. The X-ray collimator 2 of the present invention can adjust the opening angle and direction of the X-rays so that they just pass through the complete first ROI region 6 and the second ROI region 7 to realize multi-center local scanning. According to the local reconstruction theory, sparse projections can be added to the surrounding areas of the first ROI region 6 and the second ROI region 7, combined with prior image information, to ensure high-precision reconstruction of the first ROI region 6 a...

Embodiment 2

[0042] The X-ray collimator 2, the anti-scatter grid 3 and the CT detector array 4 described in the present invention can be adapted to the existing medical CT system. Since the existing medical CT system generally has a single X-ray source structure, its imaging center is always kept at the center of the gantry during the rotation process, so it is necessary to move the ROI position so that its geometric relationship with the imaging center is different under each projection angle. Change.

[0043] Considering the general scene in disease diagnosis, the common single ROI area is the heart, lung nodules, blood vessels, liver and other organs or tissues, and the ROI area needs to be moved to the center of the rack before scanning. The location of the ROI area should be based on prior knowledge, such as the image of the previous scan, the universal human anatomy model, and the doctor's experience judgment. After the ROI moves to the imaging center, the present invention aims at...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a CT system device aiming at ROI scanning. The CT system device comprises one or a plurality of X-ray collimators, one or a plurality of anti-scattering grids and one or a plurality of CT detector arrays, wherein one or the plurality of X-ray collimators are provided with openings, and the positions and the sizes of the openings can be designed according to specific scanning requirements; one or the plurality of anti-scattering grids comprise a plurality of X-ray channel arrays, wherein the positions and the sizes of the X-ray channel arrays are matched with the distribution of the openings of the corresponding X-ray collimators; and one or the plurality of CT detector arrays comprise a plurality of CT detectors, wherein the positions and sizes of the CT detectors are matched with the distribution of the openings of the corresponding X-ray collimators. The CT system device has the beneficial effects high-quality and high-precision imaging of a local area is achieved, and compared with a traditional grid, the grid matched with the X-ray collimator reduces a usage amount of lead bars, reduces the weight of equipment and reduces the production cost.

Description

technical field [0001] The invention relates to the field of CT scanning systems, in particular to a CT system device for ROI scanning. Background technique [0002] Computed tomography (CT) technology has the characteristics of convenient operation and fast scanning, and can obtain high-resolution images of the internal tissue structure of the human body under non-invasive conditions. Has a wide range of applications. For the screening of many diseases, CT scanning often focuses on a local area (region of interest, Region Of Interest, ROI), and it is not necessary to perform a full-scale CT scan. In recent years, ROI scanning has achieved good results in the diagnosis of lung and stomach lesions, pancreatic diseases, coronary atherosclerosis and other diseases. However, the current ROI scanning can only realize the imaging of a single ROI region, such as the heart, solitary pulmonary nodule, etc., but cannot image and diagnose multiple ROI regions, such as multiple pulmon...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B6/03A61B6/00A61B6/06
CPCA61B6/032A61B6/035A61B6/06A61B6/4035A61B6/4208A61B6/44A61B6/4266
Inventor 赵俊周玉府邓子恒张伟康
Owner SHANGHAI JIAO TONG UNIV