发明名称 |
MAGNETIC RESONANCE IMAGING DEVICE AND METHOD FOR GENERATING MAGNETIC RESONANCE IMAGE |
摘要 |
Provided is a magnetic resonance imaging (MRI) apparatus including an acquisition unit configured to acquire an undersampled spectrum in a k-space and a reconstruction unit configured to generate a target image based on the undersampled spectrum, wherein the reconstruction unit includes: a first sub-reconstruction unit configured to perform initial reconstruction on data corresponding to unsampled positions in the k-space by using a Split Bregman algorithm or approximate sparse coding; a second sub-reconstruction unit configured to decompose the initially reconstructed spectrum in the k-space into multiple frequency bands to thereby generate a plurality of individual spectra and perform dictionary learning reconstruction on images respectively corresponding to the decomposed multiple frequency bands by alternating sparse approximation and reconstructing of measured frequencies; and an image generator configured to generate a target image by merging together the reconstructed images respectively corresponding to the multiple frequency bands. |
申请公布号 |
US2017053402(A1) |
申请公布日期 |
2017.02.23 |
申请号 |
US201515307936 |
申请日期 |
2015.04.30 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
MIGUKIN Artem Sergeevich;KOROBCHENKO Dmitry Alexandrovich;SIROTENKO Mikhail Yurievich;GAVRILYUK Kirill Arthurovich;GULAKA Praveen;CHOI Sang-cheon;RYCHAGOV Michail Nikolaevich;CHOI Yang Lim |
分类号 |
G06T7/00;A61B5/00;G06T11/00;A61B5/055 |
主分类号 |
G06T7/00 |
代理机构 |
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代理人 |
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主权项 |
1. A magnetic resonance imaging (MRI) apparatus comprising:
an acquisition unit configured to acquire an undersampled spectrum in a k-space; and a reconstruction unit configured to generate a target image based on the undersampled spectrum, wherein the reconstruction unit comprises: a first sub-reconstruction unit configured to perform initial reconstruction on data corresponding to unsampled positions in the k-space by using a Split Bregman algorithm or approximate sparse coding; a second sub-reconstruction unit configured to decompose the initially reconstructed spectrum in the k-space into multiple frequency bands to thereby generate a plurality of individual spectra and perform dictionary learning reconstruction on images respectively corresponding to the decomposed multiple frequency bands by alternating sparse approximation and reconstructing of measured frequencies; and an image generator configured to generate a target image by merging together the reconstructed images respectively corresponding to the multiple frequency bands. |
地址 |
Suwon-si KR |