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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
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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.
作者 俞琴 冉隆富 韩林梅 丁洁 袁蓉 YU Qin, RAN Longfu, HAN Linmei, et al. (Department of MRI,The 7th Hospital of Chengdu, Sichuan Province 610021, P. R. China)
出处 《临床放射学杂志》 CSCD 北大核心 2018年第7期1132-1135,共4页 Journal of Clinical Radiology
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 Three dimensional magnetic resonance imaging Volume Rendering Maximum intensity projection Pancreas divisum
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