Multi-resolution parallel magnetic resonance image reconstruction method for mobile equipment
A technology for magnetic resonance images and low-resolution images, which is applied in the field of multi-resolution parallel magnetic resonance image reconstruction, can solve problems such as low computational complexity, and achieve good universality
Pending Publication Date: 2021-04-02
SOUTH CHINA UNIV OF TECH
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The purpose of the present invention is to solve the above-mentioned defects in the prior art, provide a multi-resolution parallel magnetic resonance image reconstruction method used in mobile devices, and decompose the magnetic resonance imaging reconstruction problem based on compressed sensing into four independent Low-resolution image reconstruction subproblems, each with low computational complexity
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
[0038] refer to figure 1 , the present embodiment provides a novel multi-resolution parallel magnetic resonance image reconstruction method used in a mobile device, comprising the following steps:
[0039] S1. Sampling original magnetic resonance imaging k-space data at a certain sampling rate. The specific sampling method is as follows:
[0040] The position (k 1 ,k 2 ), data, get four sets of k-space data X(k 1 ,k 2 ), in, N is the length / width pixel number of the magnetic resonance image.
[0041] In this embodiment, the sampling rate is selected as 30%, and the size of N is 256.
[0042] S2, four groups of k-space data X(k) obtained by sampling in step S1 1 ,k 2 ), Then four sets of sampling data are used for imaging recovery, and four low-resolution images are obtained by calculating the Fourier transform of the four sets of sampling data; the calculation expressions of the four sets of Fourier coefficients corresponding to the four low-resolution im...
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 multi-resolution parallel magnetic resonance image reconstruction method for mobile equipment. The method comprises the following steps: firstly, sampling k-space data of original magnetic resonance imaging at a certain sampling rate; calculating four groups of Fourier coefficients corresponding to the four low-resolution images according to the four groups of k-space data obtained by sampling; distributing the obtained four groups of Fourier coefficients to four cores of a CPU of the mobile equipment respectively, and reconstructing four low-resolution images in thefour cores of the CPU at the same time by using any one undersampling reconstruction method to obtain four low-resolution images; and splicing the pixels of the four low-resolution images together toobtain a final high-resolution magnetic resonance reconstruction image. According to the invention, a parallel magnetic resonance image reconstruction method is adopted, the calculation complexity ofa traditional CS-MRI algorithm is reduced, the speed of reconstructing the magnetic resonance image on the mobile device is greatly increased, and the method can be widely applied to the mobile deviceof the Internet of Things based on mobile calculation.
Description
technical field [0001] The invention relates to the technical field of medical image processing, in particular to a multi-resolution parallel magnetic resonance image reconstruction method used in mobile devices. Background technique [0002] In the Internet of Things based on mobile computing, user equipment is the collection point of data collected by various sensors. Under this mechanism, the computational complexity of the algorithm used to process the data is limited by the capacity and performance of the user equipment. Therefore, for practical applications with heavy computational burdens, not only need to carefully design the corresponding data processing algorithms, but also need to distribute computing tasks to multiple user devices or multiple cores in one user device. However, although most mobile devices have a multi-core central processing unit (CPU), the computing power of each core is not high, so the calculation time required to solve complex calculation pr...
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 Applications(China)
IPC IPC(8): G06T3/40G06T1/20
CPCG06T3/4053G06T1/20
Inventor 陈真唐杰唐珩膑
Owner SOUTH CHINA UNIV OF TECH