Abstract: Objective · To analyze the multidetector CT (MDCT) manifestations of mesenteric venous thrombosis (MVT) and further explore the diagnostic value of MDCT in acute and chronic MVT. Methods · MDCT findings of 47 MVT patients clinically confirmed in Shanghai Sixth People’s Hospital, Shanghai Jiao Tong University and Second Peoples Hospital in Kashgar January 2012 to October 2018 were retrospectively analyzed. The mean CT value of thrombus on CT axial images of acute and chronic MVT was measured and calculated. According to CT values and CT manifestations, differences between the two groups were statistically analyzed. Results · Among 47 patients with MVT, there were 46 (97.87%) with filling defect of mesenteric vein and its branches, 34 (72.34%) with dilatation of blood vessels at the thrombosis site, 30 (63.82%) with intestinal wall thickening, 9 (19.15%) with enhanced delamination of intestinal wall, 11 (23.40%) with intestinal dilatation, 21 (44.68%) with ascites, and 25 (53.19%) with mesenteric edema. The mean CT value of MVT thrombus in acute group [(42.88±17.77) HU]was higher than that in chronic group [(31.80±6.18) HU](P<0.05). The proportion of MVT with vasodilation and target sign in acute group was higher than that in chronic group (P<0.05). There was no difference in the ratio of other signs between the two groups. Conclusion · The MDCT findings of MVT patients are characteristic. CT value of thrombus, vasodilation and target sign are valuable in evaluating acute and chronic MVT. [Key words]mesenteric venous; thrombosis; CT value

Key words: mesenteric venous, thrombosis, CT value