并行采集技术联合深度学习重建用于肩关节MRI  

Parallel acquisition technique combined with deep learning reconstruction for shoulder joint MRI

作　　者：颜青余[1] 杨靖逸[2] 温林[2] YAN Qingyu;YANG Jingyi;WEN Lin(Department of Medical Equipment,Sichuan Provincial People’s Hospital,Chengdu 610072,China;Department of Radiology,Sichuan Provincial People’s Hospital,Chengdu 610072,China)

机构地区：[1]四川省人民医院医学装备部,四川成都610072 [2]四川省人民医院放射科,四川成都610072

出　　处：《中国介入影像与治疗学》2024年第9期557-560,共4页Chinese Journal of Interventional Imaging and Therapy

摘　　要：目的观察并行采集技术(PAT)联合深度学习重建(DLR)用于肩关节MRI的价值。方法前瞻性纳入接受肩关节MR检查的74人,分别以标准序列(A组)、PAT加速序列(B组)及PAT加速序列联合DLR(C组)采集肩关节MRI。采用5分法对图像整体质量、伪影及显示解剖结构(关节软骨、韧带及骨髓)清晰度进行主观评价;计算关节软骨信噪比(SNR)及对比度噪声比(CNR)进行客观评价;比较3组主观及客观评价结果。结果A、C组间图像整体质量、伪影及显示解剖结构清晰度主观评分差异均无统计学意义(P均>0.05),均高于B组(P均<0.05)。C、A、B组之间,肩关节MRI关节软骨SNR及CNR依次降低(P均<0.05)。结论PAT联合DLR可缩短肩关节MR扫描时间、降低图像噪声、提高图像质量。Objective To observe the value of parallel acquisition technique(PAT)combined with deep learning reconstruction(DLR)for shoulder joint MRI.Methods Totally 74 subjects who underwent shoulder joint MR scanning were prospectively enrolled.Shoulder joint MRI were acquired using standard sequence(group A),PAT accelerated sequence(group B)and PAT accelerated sequence combined with DLR(group C),respectively.Subjective evaluation of overall image quality,artifacts and clarity of anatomical structures(including articular cartilages,ligaments and bone marrow)were performed using a 5-point scale,and signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of articular cartilages were calculated for objective evaluation,which were then compared among groups.Results No significant difference of the subjective scores of overall image quality,artifacts nor clarity of anatomical structures was found between group A and C(all P>0.05),which were all higher than those in group B(all P<0.05).SNR and CNR of articular cartilages of shoulder joint MRI in group C,A,B decreased in order(all P<0.05).Conclusion PAT combined with DLR could shorten scanning time of shoulder joint MRI,reduce image noise and improve image quality.

关 键 词：肩关节 磁共振成像 深度学习 前瞻性研究 图像质量 

分 类 号：R684[医药卫生—骨科学] R445.2[医药卫生—外科学]