Abstract: ［Abstract］ Objective〖HTSS〗〓To explore the CT angiography(CTA) application value in preoperative appraisa of laparoscopic assisted colon cancer radical correction.
〖HTH〗〖WTHZ〗Methods〖HTSS〗〓 Seventy eight  colon cancer patients were selected who operated with laparoscopic assisted colon cancer radical correction  in The First Hospital of Hebei Medical University. According to the different methods of preoperative examination， the patients were divided into two groups. CTA group: 40 patients with the CTA and CT examination. CT group: 38 patients with CT examination only. All patients underwent abdominal CT examination before operation, the CTA group patients were combined with volume rendering technology to show major mesenteric blood vessels. The following surgical indicators were compared: operation time, intraoperative blood loss, lymph node number and postoperative exhaust time; postoperative complications: incision infection, anastomotic fistula and postoperative phlegmonosis intestinal obstruction.
〖HTH〗〖WTHZ〗Results〖HTSS〗〓Operation time was significantly abbreviated in  CTA group than in CT group(P＜005). The intraoperative blood loss of CTA group was significantly lower than that in CT group(P＜005). There were no significant differences in lymph node number, postoperative exhaust time between CTA group and CT group(P＞005). There was no significant difference in postoperative complications between CTA group and CT group(P＞005).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗〓Through CTA examination,  understand the mesenteric vessel shape, variation and distribution of lymph nodes before operation, helps to shorten the laparoscopic colon surgery time, reduce intraoperative bleeding, reduction of postoperative complications.

Key words: colon neoplasms, angiography, laparoscopes