Study on compressed sensing and deep learning reconstruction techniques applied in orbital MRI
10.19745/j.1003-8868.2024195
- VernacularTitle:压缩感知结合深度学习重建技术在眼眶MRI中的应用研究
- Author:
Da CAO
1
;
Rui-Lei YU
;
Hao HU
;
Xiao-Quan XU
;
Chuan-Bing WANG
Author Information
1. 南京医科大学第一附属医院放射科,南京 210029
- Keywords:
compressed sensing;
deep learning;
orbital MRI;
image recontruction
- From:
Chinese Medical Equipment Journal
2024;45(10):60-65
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of compressed sensing(CS)combined with deep learning(DL)reconstruction techniques for orbital MRI.Methods Thirty healthy individuals were selected to undergo MRI scanning with parallel imaging(S group with an acceleration factor of 2)and CS imaging(CS group with acceleration factors of 2,3,4 and 5),and images were acquired after DL reconstruction(DL group involving in S2DL,CS2DL,CS3DL,CS4DL and CS5DL sequences).All the groups were compared in terms of the subjective indexes including overall image quality,clarity of musculi oculi boundaries and diagnostic confidence level and the objective indexes including oculomotor-temporal muscle signal intensity ratio(SIR),oculomotor signal to noise ratio(SNR)and oculomotor-temporal muscle contrast to noise ratio(CNR).SPSS 26.0 statistical software was used for data analysis.Results S and CS groups after DL image reconstruction had the scores of the subjective indexes enhanced,and the differences of the subjective indexes between CS2 and S2,CS2DL and S2DL,CS2 and CS2DL were not statistically significant(P＞0.05);CS3 and CS2,CS5 and CS5DL did have significant differences in the overall image quality and clarity of musculi oculi boundaries(P＜0.05),while CS2DL and CS3DL did not(P＞0.05);there were significant differences in overall image quality,clarity of musculi oculi boundaries and diagnostic confidence level between CS3 and CS3DL and between CS4 and CS4DL.For the objective indexes,S and CS groups after image DL reconstruction had the scores of oculomotor SNR and oculomotor-temporal muscle CNR increased,and CS2,S2,CS2DL and S2DL had statistically significant differences in oculomotor SNR and oculomotor-temporal muscle CNR(P＜0.05);DL and CS groups were not significantly different in oculo-motor-temporal muscle SIR(P＞0.05).Conclusion DL reconstruction technique improves iamge quality while enhancing the image SNR and CNR.CS with an acceleration of 3 combined with DL reconstruction technique contibutes to shortening scanning time,strengthening image quality and bettering patient satisfaction,which is of great application value for orbital MRI.[Chinese Medical Equipment Journal,2024,45(10):60-65]
