中文摘要：

目的探讨胰泌素刺激-磁共振胰胆管成像（S-MRCP）定量评估猫慢性胰腺炎（CP）胰腺外分泌功能的价值。方法将32只健康成年猫分为实验组（n=24）及对照组（n=8）;实验组剖腹行胰管不全结扎,建立CP模型,对照组仅行无菌开腹,不结扎胰管。对实验组分别于建模后3、5、7周分批行S-MRCP检查,每批次8只;对照组于缝合关腹后立即进行检查。S-MRCP检查完成后对动物胰腺进行病理学分析,根据病理结果将实验组分为3个亚组：CP-Ⅰ（轻度CP）、CP-Ⅱ（中度）、CP-Ⅲ（重度CP）。对各组注射胰泌素前、后胃肠道液体量的增加程度（FVID）进行统计学分析。结果实验组24只中,15只建模成功,CP-Ⅰ、CP-Ⅱ、CP-Ⅲ亚组分别为7、5、3只。注射胰泌素5min及15min后实验组整体FVID低于对照组（F=9.742、13.543,P均〈0.05）。对照组与CP-Ⅱ亚组间、对照组与CP-Ⅲ亚组间及CP-Ⅰ与CP-Ⅲ亚组间差异均有统计学意义（P均〈0.05）;其余各组间差异虽无统计学意义（P均〉0.05）,但随着胰腺炎程度加重,FVID有逐渐下降趋势。结论利用S–MRCP可通过测量注射胰泌素前、后胃肠道液体量的变化评价猫CP模型胰腺外分泌功能

英文摘要：

Objective To assess the value of secretin-stimulated magnetic resonance cholangiopancreatography（S-MRCP） in quantitative analysis of pancreatic exocrine function in chronic pancreatitis（CP） cat models.Methods Thirty-two healthy adult cats were divided into experimental group（n=24） and control group（n=8）.Incomplete ligation of pancreatic duct was performed on cats in experimental group in order to establish CP models,while cats in control group received a sham operation.S-MRCP was performed in 3,5,and 7 weeks after ligation with 8 cats examined at each time point in experimental group.Cats in control group underwent postoperative S-MRCP immediately.After S-MRCP,cats in experimental group were classified into three subgroups according to the histological analysis of the pancreas： CP-Ⅰ（slight）,CP-Ⅱ（moderate） and CP-Ⅲ（severe）.Increasing degrees of fluid volume（FVID） in gastrointestinal tract before and after injecting secretin were statistically analyzed.Results Fifteen CP models were established successfully in experimental group（n=24）,including 7 in CP-Ⅰ,5 in CP-Ⅱ and 3 in CP-Ⅲ subgroups.FVID of experimental group was lower than that of control group at 5 and 15 minutes after secretin injection（F=9.742,13.543,both P〈0.05）.There were significant differences of FVID between control group and CP-Ⅱ subgroup,as well as between control group and CP-Ⅲ subgroup（both P〈0.05）.Moreover,significant difference of FVID was found between CP-Ⅰ and CP-Ⅲ subgroup（P〈0.05）.Although there was no significant difference between other groups（all P〉0.05）,FVID showed a downward trend with increased worsening degrees of CP.Conclusion S-MRCP can be used to quantify pancreatic exocrine function of cat CP models by detecting FVID changes before and after secretin injection