螺旋电子计算机体层扫描双期扫描对胰腺癌可切除性的研究

目的 探讨胰腺癌在螺旋ＣＴ双期扫描图上的ＣＴ特征，术前评估肿瘤的可切除性。方法 ６８例经手术和（或）病理证实的胰腺癌，增强扫描每千克体重１～１．５ｍｌ由静脉注入总量为７５～１００ｍｌ的造影剂，速率２．５～３ｍｌ／ｓ，动脉期和门静脉期的延迟时间分别为１８～２０ｓ、６０～７０ｓ，层厚３～５ｍｍ，螺距１．０～１．５；重建间隔２．５～４．８ｍｍ。结果 术前判断为可切除的胰腺癌２０例，手术符合率为７５％（１

Study on Resectability of Pancreatic Carcinoma on Spiral Double-Phaes CT

Objective To probe the specific manifestations of pancreatic carcinoma on spiral double phases CT and evaluate its resectability preoperatively. Methods 68 patients were confirmed operatively and pathologically. Enhanced CT scan was performed with an intravenous bolus of 75~100 ml (1~1.5 ml/kg body weight) contrast medium at a rate of 2.5~3 ml/s. The delayed scan time of arterial and venous phase were 18~20s and 60~70s respectively, with a slice of 3~5 mm, a pitch of 1~1.5, and a reconstruction interval of 2.5~4.8 mm. Results Preoperative judgement as resectable was in accordance with surgery in 75% of patients (15/20), whereas preoperative judgment as non resectable was with a percentage of 95.8%(46/48). Conclusion Spiral double phase CT is superior in revealing involvement of peripanceatic vessels; invasion of the neighboring organs; the size, shape and range of the carcinoma; hepatic and lymphatic metastases, etc. Thus the predictability of resection in patients with pancreatic carcinoma is obviously raised.