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目的 评价螺旋CT三期扫描对小肠早期缺血的诊断价值。方法 80例健康者 (对照组 )和 45例肠缺血患者 (观察组 )扫描前均口服水。静脉团注造影剂后 ,分别于增强后 3 0s(动脉期 )、60s(静脉期 )、180s(延迟期 )行螺旋CT扫描。并分别测取三期中小肠各段肠壁及系膜的CT值。结果 80例健康者 (对照组 ) ,在同一期相中 ,小肠肠壁各段CT值差别无统计学意义 (Ρ >0 .0 5 ) ,但在动脉期、静脉期和延迟期之间 ,有统计学意义 (Ρ <0 .0 1)。系膜在各期相间均无统计学意义 (Ρ >0 .0 5 )。而 45例肠缺血患者 (观察组 ) ,统计结果恰与上述相反。结论 正常小肠在同一期相中 ,各段的强化一致 ,在不同期相间 ,各段的强化有显著差别 ,系膜的强化在各期相间均无变化。若小肠出现上述相反强化 ,即可提示小肠早期缺血
Objective To evaluate the diagnostic value of three-phase spiral CT in early stage of small intestine ischemia. Methods Eighty healthy subjects (control group) and 45 patients with intestinal ischemia (observation group) were given oral water before the scan. Intravenous bolus injection of contrast agent, respectively, after the enhancement 30s (arterial phase), 60s (venous phase), 180s (delayed phase) spiral CT scan. The CT value of the intestinal wall and mesangial of each stage of the middle and small intestine were measured respectively. Results There was no significant difference in the CT value of the intestinal wall between the 80 healthy subjects (control group) and the same phase (P> 0.05). However, in the arterial phase, venous phase and delayed phase, There was statistical significance (Ρ <0. 01). Mesangial in each phase were not statistically significant (Ρ0.50). The 45 cases of intestinal ischemia patients (observation group), the statistical results exactly the opposite. Conclusion The normal small intestine in the same phase, the strengthening of the various segments consistent in different phases, the strengthening of each segment were significantly different, the strengthening of the mesangium did not change in all phases. If the opposite of the intestine to strengthen the above, you can prompt early intestinal ischemia