胰周血管16层CT成像研究

Angiography of peri-pancreatic vessels with 16-slice CT

目的:探讨16层CT血管成像技术显示胰周血管的价值。方法:对40例无腹部疾病的病人行16层CT双期扫描。使用轴位CT图像、薄层最大密度投影(TSMIP)和容积重建(VR)图像评价胰腺周围动脉和静脉。结果:轴位CT图像、TSMIP和VR对胰腺间接供血动脉和门静脉、肠系膜上静脉、脾静脉、胃网膜右静脉的显示率均为100%,对胃结肠干均为80%。轴位CT、TSMIP和VR对胰十二指肠上后动脉的显示率分别为97.5%、92.5%、67.5%;对胰十二指肠上前动脉,为95%、95%、75%;对胰十二指肠下动脉,为97.5%、92.5%、57.5%;对右结肠上静脉,为100%、87.5%、80%;对胰十二指肠上后静脉,为92.5%、65%、40%;对胰十二指肠上前静脉,为92.5%、62.5%、45%。结论:结合适当的扫描技术和显示方法,使用16层CT可获得良好的胰周血管的显示。

Objective：To explore the clinical value of MDCT angiography in the visualization of peripancreatic vessels with a 16-slice CT. Materials and Methods：Dual-phase CT scanning using a 16-slice CT was performed in 40 cases. Peripancreatic vessels were evaluated by axial images, TSMIP and VR. Results：The indirect pancreatic supplying arteries, PV, SMV, SV and RGEV were all seen in each technique. In axial images, TSMIP and VR, visualization rates of PSPDA were 97.5%, 92.5%, 67.5%, respectively; ASPDA, 95%, 95%, 75%; IPDA, 97.5%, 92.5%, 57.5%; RSCV, 100%, 87.5%, 80%; PSPDV, 92.5%, 65%, 40%; ASPDV, 92.5%, 62.5%, 45%. Conclusion： Good manifestation of the peripancreatic vessels can be gained using a 16-slice CT with combination of preparation prior to scanning, optimal scanning techniques and reconstruction methods.