Interpolation Algorithm for Motion Vector Field of CTA Image and Accelerated Implementation Based on Uniform Grid and Multi-level B-spline.
10.3969/j.issn.1671-7104.2021.02.003
- Author:
Qiang GAO
1
;
Yuan BAO
2
;
Jun ZHAO
3
Author Information
1. School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200240.
2. Shanghai United Imaging Healthcare Co. Ltd., Shanghai, 201807.
3. School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200240. E-mail:junzhao@sjtu.edu.cn.
- Publication Type:Journal Article
- Keywords:
motion vector field;
multi-level B-spline;
registration;
splitting matrix;
thin plate spline
- MeSH:
Algorithms;
Computed Tomography Angiography;
Heart;
Motion;
Tomography, X-Ray Computed
- From:
Chinese Journal of Medical Instrumentation
2021;45(2):131-135
- CountryChina
- Language:Chinese
-
Abstract:
In order to solve the problems of slow operation speed and low registration accuracy of thin plate spline (TPS) interpolation method for motion vector field in coronary computed tomography angiography (CTA), a multi-level B-spline interpolation method (MBS) with uniform grid is proposed. On the one hand, the interpolation method used local B-spline to refine the sparse mesh layer by layer in a multiscale way to improve the accuracy of registration. On the other hand, it used the splitting matrix method to interpolate the motion vector field, greatly reducing the operation time of interpolation. The experimental results show that the proposed method can be used for CTA image registration efficiently.
