A method and system for automatic position calibration of CT bed frame
A calibration method and a calibration system technology, applied in the field of medical imaging, can solve the problems of high cost and complex analytical geometric correction methods, and achieve the effects of simple cost, improved image quality, and easy operation.
Active Publication Date: 2022-07-05
SHENZHEN ANKE HIGH TECH CO LTD
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a CT bed frame automatic position calibration method and its system in view of the above-mentioned defects of the prior art, aiming to solve the problem of complex and high-cost analytic geometry calibration methods in the prior art. question
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
[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0048] see also Figure 1-Figure 7 , the present invention provides some embodiments of an automatic position calibration method and system of a CT hospital bed frame. figure 1 middle Indicates the direction perpendicular to the paper to the inside, that is, the X-axis direction is the direction perpendicular to the paper to the inside; figure 2 middle Indicates the direction perpendicular to the paper surface to the outside, that is, the Y-axis direction is the direction perpendicular to the paper surface to the outside.
[0049] like Image 6 As shown, the automatic posi...
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 method and a system for automatic position calibration of a frame of a CT hospital bed. The method comprises the steps of: scanning a phantom several times with the movement of a hospital bed, and acquiring image data of the phantom; The centroid of the image is obtained and the trajectory deviation is obtained; the inclination angle and skew angle of the phantom are obtained by spatial straight line fitting of the trajectory deviation, and the calibration is performed according to the inclination angle and skew angle of the phantom. Since the centroid of the image is used to obtain the track deviation, and the track deviation is used to obtain the inclination angle and the skew angle. The invention processes the data through the algorithm on the software, and processes the data on the basis of the existing product image, so as to improve the image quality. The phantom is simple, low cost, easy to operate, quick to calibrate, and easy to implement.
Description
technical field [0001] The invention relates to the technical field of medical imaging, in particular to an automatic position calibration method and a system of a CT bed frame. Background technique [0002] The gantry and hospital bed of the CT system are two independent parts. After the CT gantry is installed and positioned, the hospital bed is installed again. Due to site and human reasons, the relative mechanical accuracy between them often cannot strictly meet the requirements of the reconstruction algorithm model. Reconstruction artifacts caused by such geometric deviations are called geometric artifacts. Geometric artifacts will reduce the quality of the reconstructed image, such as a step-like structure, which affects the doctor's diagnosis of the disease, and reduces the quality and safety of medical care. [0003] In the prior art, the traditional analytical geometric correction method usually needs to make an accurate calibration phantom, use a specially develope...
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): A61B6/04
CPCA61B6/0407A61B6/584
Inventor 曾凯冯亚崇
Owner SHENZHEN ANKE HIGH TECH CO LTD