Title:
RADIAL ACQUISITION DIFFUSION WEIGHTED IMAGING MOTION ARTIFACT CORRECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/184469
Kind Code:
A1
Abstract:
Disclosed is a radial acquisition diffusion weighted imaging motion artifact correction method, comprising damaged data detection, damaged data repair, and filtered back projection reconstruction. The damaged data detection step comprises converting an original K-space data to a projection data space to obtain an original projection data set, reconstructing an original image from the original projection data set by filtered back projection, and then performing Radon transformation on the original image to obtain a new projection data set, and comparing the difference between the new projection data set and the original projection data set to detect motion damaged data. The damaged data repair comprises replacing the data of a damaged area with new projection data, and linearly fusing the data at the edge of the damaged area with the original projection data and the new projection data to obtain corrected projection data. Finally, a final image is reconstructed from the corrected projection data by means of filtered back projection reconstruction. The solution of the present invention can reduce motion artifacts, thus improving image quality.
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Inventors:
WU ZIYUE (CN)
LUO HAI (CN)
CHEN XIAO (CN)
LUO HAI (CN)
CHEN XIAO (CN)
Application Number:
PCT/CN2020/084732
Publication Date:
September 23, 2021
Filing Date:
April 14, 2020
Export Citation:
Assignee:
WUXI MARVEL STONE HEALTHCARE CO LTD (CN)
International Classes:
G06T5/50; G06T5/00
Foreign References:
| CN104952039A | 2015-09-30 | |||
| CN110652296A | 2020-01-07 | |||
| US20060239585A1 | 2006-10-26 |
Other References:
HAN YEJI, HWANG JINYOUNG, CHUNG JUN-YOUNG, YUN SUNGDAE, PARK HYUNWOOK: "Improvement of the Diffusion-Weighted Images Acquired With Radial Trajectories Using Projection Data Regeneration", JOURNAL OF MAGNETIC RESONANCE IMAGING, vol. 26, no. 3, 1 September 2007 (2007-09-01), US, pages 799 - 804, XP055851726, ISSN: 1053-1807, DOI: 10.1002/jmri.21057
ZHAO JIN-LI , HU HONG-PING , LI QUAN: "Projection Fused Image Reconstruction Algorithm Study Based on Graded Variable Voltage", NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY, vol. 35, no. 6, 20 June 2015 (2015-06-20), pages 585 - 589, XP055851730, ISSN: 0258-0934
ZHAO JINLI: "The Study of CT Image Fusion And Reconstruction Based on Graded Variable Voltage", CHINESE MASTER’S THESES FULL-TEXT DATABASE, 1 June 2016 (2016-06-01), pages 1 - 56, XP055851735, ISSN: 1674-0246
ZHAO JIN-LI , HU HONG-PING , LI QUAN: "Projection Fused Image Reconstruction Algorithm Study Based on Graded Variable Voltage", NUCLEAR ELECTRONICS & DETECTION TECHNOLOGY, vol. 35, no. 6, 20 June 2015 (2015-06-20), pages 585 - 589, XP055851730, ISSN: 0258-0934
ZHAO JINLI: "The Study of CT Image Fusion And Reconstruction Based on Graded Variable Voltage", CHINESE MASTER’S THESES FULL-TEXT DATABASE, 1 June 2016 (2016-06-01), pages 1 - 56, XP055851735, ISSN: 1674-0246
Attorney, Agent or Firm:
GAOYUNG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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