【摘要】 目的探讨CT诊断兔小肠闭袢性肠梗阻肠壁缺血程度的价值。方法新西兰大白兔54只,随机分为A、B、C三组,A组9只,结扎长约10～15cm的小肠两端,形成单纯性闭袢;B组30只,同时结扎闭袢肠段的引流静脉;C组15只,在B组操作基础上同时结扎闭袢肠段的供血动脉。按预设的不同时间段行CT扫描,扫描结束后取材闭袢肠段3～5cm进行组织学观察。将不同时间段小肠肠壁缺血程度的CT表现与相对应的病理诊断结果进行比较。结果A组9只,病理均表现为轻度肠缺血,CT正确诊断7只;B组30只,病理表现为轻度、中度和重度肠缺血,其中轻度9只,CT正确诊断6只;中度13只,CT正确诊断10只;重度8只,CT正确诊断7只。C组15只,病理表现为中度和重度肠缺血,其中中度6只,CT正确诊断5只,重度9只,CT正确诊断7只。结论CT对小肠肠壁缺血程度判断的准确性高,对临床有参考价值。更多还原

【Abstract】 Objective To observe the value of CT in the assessment of small bowel wall ischemia in rabbits’ closed loop obstruction. Methods Fifty-four New Zealand white rabbits were randomly divided into three groups (A, B and C). Group A (9 rabbits): small intestine was ligated in the two ends of a 10-15 cm segment to form a simple closed loop. Group B (30 rabbits): after the same operation as group A, the draining veins of the segment were also ligated. Group C (15 rabbits): after the same operation as group B, the feeding arteries of the segment were ligated too. Then CT scanning was performed at different scheduled time. After scanning, a 3-5 cm long segment of the closed loop obstruction in each rabbit was taken for histological observation. Results In group A, slight ischemia was found pathologically in all rabbits, while CT detected slight ischemia in 7 rabbits. In group B, light, medium and severe ischemia were pathologically observed respectively in 9, 13 and 8 rabbits, while CT diagnosed 6 (6/9) slight, 10 (10/13) medium and 7 (7/8) severe ischemia. In group C, 6 medium and 9 severe ischemia were diagnosed pathologically, whereas CT diagnosed 5 (5/6) medium and 7 (7/9) severe ischemia. Conclusion CT assessment is important to judge the degree of small bowel wall ischemia.更多还原