Device and method for inhibiting track vibration artifact in C-type arm fault imaging
A tomographic imaging and C-arm technology, applied in the field of medical imaging, can solve problems such as artifacts in CT images, orbital vibration, and affecting doctor's diagnosis, and achieve the effects of less redundant calculation, easy implementation, and simple structure
Inactive Publication Date: 2013-02-27
BEIHANG UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In the actual application of C-arm CT, the scanning track of the X-ray source will deviate from the pre-designed track due to factors such as mechanical vibration, gravitational depression, bearing irregularity, etc. Artifacts that affect doctors' diagnosis
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] The structure of the device for suppressing orbital vibration artifacts in C-arm tomography provided by the present invention is as follows: figure 1 As shown, an X-ray source 5 and a plane detector 6 are respectively fixed at the two arc free ends of the C-shaped arm 1, and three position sensors are installed on the C-shaped arm 1, which are the first sensor 2 and the second sensor 3 respectively. And the third sensor 4, the first sensor 2 is installed at the center of the arc of the C-arm 1, the second sensor 3 is installed at the X-ray source 5 of the C-arm 1, and the third sensor 4 is installed on the plane detection Device 6. The X-ray source 5 and the plane detector 6 on the C-arm 1 rotate and scan around the center O of the object 8 along an ideal circular scanning orbit 7 .
[0025] Based on the above device for suppressing o...
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
Login to View More Abstract
The invention discloses a device and a method for inhibiting a track vibration artifact in C-type arm fault imaging, and belongs to the field of medical imaging. The problem to be solved is to inhibit an image artifact caused by X-ray source track vibration in the C-type arm fault imaging. In the device, three position sensors are arranged on a C-type arm. The method comprises the following steps of: in the process of scanning and acquiring projection data by using the C-type arm, recording the C-type arm vibration situation at each projection angle by using the three position sensors; according to the C-type arm vibration situation, calculating offset parameters (D', beta' and alpha') in a track vibration artifact inhibiting method; and reconstructing an image. The device and the method have the characteristics of capability of effectively inhibiting a track vibration image artifact caused by C-type arm vibration, low cost, easy implementation and little influence on CT image reconstruction time.
Description
technical field [0001] The invention relates to a device and method for suppressing X-ray computed tomography (CT) artifacts, more specifically, it relates to a method for suppressing orbital vibration artifacts in C-arm X-ray computed tomography based on traditional cone beam reconstruction algorithms. A device and method for imaging belong to the field of medical imaging. Background technique [0002] C-arm X-ray computed tomography (C-arm CT) technology uses the two-dimensional X-ray projection data obtained by the C-arm plane detector to reconstruct CT images, which is a brand new image imaging technology. The main components of the C-arm imaging system are the X-ray generation part (X-ray source), the detector part (plane detector) and the C-arm frame part. The C-arm system framework includes a bracket and a C-arm, the detector is installed on one end of the C-arm, and the X-ray source is installed on the other end. Due to the non-enclosed design of the C-arm, the sca...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
Inventor 李德玉蔡可徐敏曹皓舒蒲放樊瑜波
Owner BEIHANG UNIV