光梭径向采集技术和三维容积内插快速扰相序列在MRI肝脏增强扫描中的图像质量比较  

Comparison of Image Quality between United Compressed Sensing with Radial Acquisition and Quick3D in Enhanced MRI of Liver

作　　者：张宇 邓和平[1] 何长久[1] 杨学刚[1] 胡仕北[1] 周鹏[1] Zhang Yu;Deng Heping;He Changjiu;Yang Xuegang;Hu Shibei;Zhou Peng(Department of Radiology,Sichuan Clinical Research Center for Cancer,Sichuan Cancer Hospital&Institute,Sichuan Cancer Center,Affiliated Cancer Hospital of University of Electronic Science and Technology of China,Chengdu 610041,Sichuan,China)

机构地区：[1]四川省肿瘤临床医学研究中心,四川省肿瘤医院·研究所,四川省癌症防治中心,电子科技大学附属肿瘤医院影像科,成都610041

出　　处：《肿瘤预防与治疗》2024年第6期492-498,共7页Journal of Cancer Control And Treatment

基　　金：四川省科技计划项目(编号:2021YFS0225);成都市科技计划项目(编号:2022-YF05-01811-SN)。

摘　　要：目的:对比光梭径向采集技术(united compressed sensing with radial acquisition,uCSR)和三维容积内插快速扰相序列(quick3D)在MRI肝脏增强扫描中的图像质量,探讨uCSR在MRI肝脏增强扫描中的价值。方法:回顾性收集2022年10月至2023年4月77例同时有uCSR和quick3D图像的磁共振肝脏增强检查结果的患者资料。比较uCSR和quick3D图像的主观图像质量(整体图像质量、肝脏边缘锐度、肝门脉清晰度、肝静脉清晰度、呼吸运动伪影)和客观图像质量[信噪比(signal-noise ratio,SNR)和对比噪声比(contrast-noise ratio,CNR)]。结果:77例患者uCSR图像的主观评分指标和CNR均高于quick3D(均P<0.05);而两组图像的SNR差异无统计学意义(P>0.05)。其中47例屏气良好患者uCSR的整体图像质量和肝脏边缘锐度低于quick3D,而肝门脉清晰度评分高于quick3D,差异均有统计学意义(均P<0.05);而两组图像其余主观评分指标、SNR及CNR差异均无统计学意义(均P>0.05)。30例屏气不良患者uCSR图像的主观和客观图像质量均高于quick3D(均P<0.05)。结论:在磁共振肝脏增强扫描中,对于屏气良好的患者两种序列图像质量相当,但对于屏气不良的患者,uCSR较quick3D序列能提供更好的图像质量。Objective:To compare the image quality between united compressed sensing with radial acquisition(uCSR)and three-dimensional volume interpolation fast scrambling phase sequence(quick3D)in enhanced MRI of liver,and explore the value of uCSR in enhanced MRI of liver.Methods:Seventy-seven patients undergoing enhanced MRI of liver who had both uCSR and quick3D images were retrospectively collected from October 2022 to April 2023.Subjective image quality(o-verall image quality,liver edge sharpness,hepatic portal vein clarity,hepatic vein clarity and respiratory motion artifacts)and objective image quality including signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)were compared between uCSR and quick3D sequences.Results:The subjective scores and CNR of uCSR were higher than those of quick3D in 77 patients(all P<0.05),and there was no significant difference in SNR between the two sequences(all P>0.05).The uCSR showed lower overall image quality and liver edge sharpness,higher hepatic portal vein clarity than quick3D in 47 patients with good breath holding,the differences were statistically significant(all P<0.05).There were no significant differences in other subjective scores,SNR and CNR between two groups(all P>0.05).The subjective and objective image qualities of uCSR were higher than those of quick3D in 30 patients with poor breath holding(all P<0.05).Conclusion:In enhanced MRI of liver,uCSR could provide equivalent image quality in patients with good breath holding and better image quality in patients with poor breath holding compared with quick3D.

关 键 词：光梭径向采集技术 自由呼吸 磁共振成像 图像质量 

分 类 号：R445.2[医药卫生—影像医学与核医学]