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经病理证实为胰腺癌者41例(男23例,女18例,年龄28～88岁,平均61岁),静脉注入对比剂后行动态螺旋CT胰腺实质期及门脉期检查。实质期扫描:首先用低电流(150mAs)10mm层厚行胰腺定位的CT扫描。然后,静脉注入对比剂150ml,4ml/s,注入后40s获取实质期影像,3mm层厚,小视野(20cm),螺距1.8,扫描持续时间16～23s(平均18s)。电流为200～240mAs(平均220mAs)。门静脉期扫描:静脉注入对比剂后70s行门脉期扫描,包括肝及胰腺成像,5mm层厚,螺距1.5,电流200～
Pathologically confirmed 41 cases of pancreatic cancer (23 males and 18 females, aged 28 to 88 years, mean 61 years), intravenous contrast agent after dynamic spiral CT of pancreatic parenchyma and portal phase examination. Real-time scanning: First, a CT scan of pancreas is performed with a low current (150 mAs) 10 mm layer thickness. Then, the contrast medium 150ml, 4ml / s were injected intravenously, and the real image was obtained 40s after the injection. The thickness of the layer was 3mm, the field of view was small (20cm), the pitch was 1.8, and the scanning duration was 16-23s (average 18s). Current is 200 ~ 240mAs (average 220mAs). Portal venous phase scan: Portal venous phase scanning was performed 70s after intravenous injection of contrast agent, including imaging of liver and pancreas, 5mm thickness, pitch 1.5, current 200 ~