Comparison of compressed sensing and parallel imaging applied to contrastGenhanced MRI of liver
10.3969/j.issn.1002-1671.2019.10.028
- VernacularTitle:压缩感知和并行成像技术在肝脏增强MR I中的对比研究
- Author:
Kai LIU
1
;
Caizhong CHEN
;
Xixi WEN
;
Shengxiang RAO
;
Pengju XU
;
Mengsu ZENG
Author Information
1. 复旦大学附属中山医院放射科 上海市影像医学研究所
- Keywords:
liver;
magnetic resonance imaging;
compressed sensing
- From:
Journal of Practical Radiology
2019;35(10):1665-1667,1701
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the compressed sensing (CS)and parallel imaging (PI)techniques applied to contrast-enhanced MRI (CE-MRI)scanning of liver and to determine their clinical applicability.Methods Thirty patients with liver mass who underwent the CE-MRI scanning with both CS and PI techniques were recruited in the current study.The SNR of the liver,acquisition time and subjective image quality scores were compared between CS (CE-MRI with CS)and PI (CE-MRI with PI)groups respectively.Results The SNR values of pre-enhancement T1 WI in CS group were lower than those in PI group (1 97.82±32.5 3 vs 204.94±35.28,P＜0.05).However,there was no significant difference in the SNR values of images in equilibrium phase between the two groups (CS vs PI:392.38±72.93 vs 405.03±82.09,P＞0.05).The acquisition time in CS group was significantly shorter than that in PI group [(11.71±0.23)s vs (17.85±0.42)s, P＜0.01].Significantly higher subjective image quality scores were found in CS group than those in PI group (3.54±0.57 vs 2.91±0.80,P＜0.01). Conclusion CS technique may benefit the patients who cannot hold breath well and improve the CE-MRI image quality.
