磁共振三维成像技术VR及MIP在胰腺分裂诊断中的应用  

Application of 3D-VR and 3D-MIP of MRI in the Diagnosis of Pancreas Divisum

作　　者：俞琴[1] 冉隆富[1] 韩林梅[1] 丁洁[1] 袁蓉[1] YU Qin;RAN Longfu;HAN Linmei(Department of MRI,The 7th Hospital of Chengdu,Sichuan Province 610021,P.R.China)

机构地区：[1]成都市第七人民医院磁共振室

出　　处：《临床放射学杂志》2018年第7期1132-1135,共4页Journal of Clinical Radiology

摘　　要：目的探讨磁共振三维成像技术：容积重建（VR）及最大密度投影（MIP）在胰腺分裂（PD）诊断中的应用。方法回顾性分析近4年MRCP检查诊断PD的8例患者的临床及影像资料。对8例PD的3D-MRCP薄层源数据进行VR及MIP重建,三维重建技术包括直接三维成像法（3D直）及组织结构选择加减法（3D加）。对2DMRCP、3D直-MIP、3D加-VR及3D加-MIP对胰管显示的数量及图像的清晰度、背景抑制及运动伪影进行分析对比。结果 3D加-VR诊断了8例PD,3D加-MIP诊断了7例,2D-MRCP与3D直-MIP均诊断了4例。3D加-VR显示了12处胰管,3D加-MIP显示了10处,2D-MRCP与3D直-MIP仅显示了5处。结论 3D加-VR显示胰管的形态及清晰度优于3D-MIP。3D加-VR不仅增加了PD的诊断率,还提高了显示率及图像质量。Objective To explore the application of three dimensional magnetic resonance imaging（ 3D-MRI） ： Volume Rendering（ VR） and maximum intensity projection（ MIP） in the diagnosis of pancreas divisum（ PD）. Methods Clinical and imaging of 8 of PD patients were collected and analyzed from 2013 to 2016 by magnetic resonance cholangiopancreatography（ MRCP）. VR and MIP reconstruction were performed on 8 cases. 3D techniques include 3D-straight（ 3DS） and 3Dplus（ 3DP）. The 2 D-MRCP、3DS-MIP、3DP-VR and 3DP-MIP images were analyzed and compared. Results 8 cases were diagnosed by 3DP-VR,7 cases were diagnosed by 3DP-MIP,4 cases were diagnosed by 2D-MRCP and 3DS-MIP. 3DP-VR showed 12 pancreatic ducts,3DP-MIP showed 10 pancreatic ducts,2D-MRCP and 3DS-MIP showed 5 pancreatic ducts.Conclusion 3DP-VR shows the shape and definition of pancreatic duct better than 3D-MIP. 3DP-VR not only increases the diagnostic rate of PD,but also improves the displaying rate and the image quality.

关 键 词：磁共振三维成像技术 容积重建 最大信号重建 胰腺分裂 

分 类 号：R445.2[医药卫生—影像医学与核医学] R576[医药卫生—诊断学]