磁共振功能成像DWI技术在家兔胰腺肿物模型鉴别中的应用价值
发布时间:2019-05-24 00:11
【摘要】:目的探讨磁共振分子功能成像DWI技术在动物模型胰腺癌与肿块型胰腺炎的鉴别中的应用价值。方法选取实验室内家兔胰头移植瘤模型、慢性肿块型胰腺炎模型、正常家兔各8只,对其进行磁共振弥散加权分子功能成像,b值为333、667、1 000s/mm~2,观察不同b值下胰腺癌模型、慢性炎性模型及正常兔胰腺区的表观弥散系数(ADC),并分析不同b值下胰腺癌模型、慢性炎性模型及正常兔胰腺区的ADC值及表观弥散系数差值(DADC)的变化情况,并观察各组织在分子扩散、组织灌注等方面中的差异。结果整个研究周期,胰头移植瘤模型死亡率为50%;肿块型胰腺炎模型和8只正常家兔均正常存活。相同b值下胰腺癌ADC值明显低于慢性炎症及正常胰腺区,随着b值的增大,各组织ADC值明显下降,b值为333s/mm~2时,各组织内ADC数值存在差异(F=6.662,P=0.014),组间两两比较,胰腺癌与胰腺炎(t=6.773,P=0.003),胰腺癌与正常胰腺(t=5.883,P=0.016),差异有统计学意义(P0.05)。b值增大,DADC越小,不同b值时胰腺癌区与慢性炎症肿块区、胰腺癌区与正常胰头区各组织DADC值变化差异有统计学意义(P0.05)。结论合理选择b值的分子功能成像DWI技术能够较好的鉴别胰腺癌与肿块型胰腺炎,可在动物胰头癌模型的评价中推广应用。
[Abstract]:Objective to evaluate the value of magnetic resonance molecular functional imaging (DWI) in the differential diagnosis between pancreatic cancer and mass pancreatitis in animal models. Methods eight rabbits with pancreatic head transplantation, eight rabbits with chronic mass pancreatitis and eight normal rabbits were treated with diffusion-weighted molecular functional imaging (b = 333, 667, 1000 s 鈮,
本文编号:2484373
[Abstract]:Objective to evaluate the value of magnetic resonance molecular functional imaging (DWI) in the differential diagnosis between pancreatic cancer and mass pancreatitis in animal models. Methods eight rabbits with pancreatic head transplantation, eight rabbits with chronic mass pancreatitis and eight normal rabbits were treated with diffusion-weighted molecular functional imaging (b = 333, 667, 1000 s 鈮,
本文编号:2484373
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