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目的 研究螺旋CT胰腺期、门脉期双期增强扫描在小胰腺癌早期诊断和正确分期中的作用。方法 对 14例小胰腺癌患者行螺旋CT双期增强扫描 ,扫描延迟时间分别为 30s和 6 5s,对比剂用量 10 0ml,注射速度 3ml/s。观察并比较正常胰腺及肿瘤在两期的增强情况。根据CT征象对肿瘤可切除性进行评价 ,并与手术结果比较。结果 肿瘤 胰腺对比胰腺期和门脉期分别为 (4 7 0 8±2 0 39)HU和 (2 8 77± 16 2 3)HU(t=2 .5 33,P <0 0 1)。 14例肿瘤中 ,术前认为可以切除 11例 ,术中切除 9例。结论 螺旋CT双期增强扫描能更清晰地显示小胰腺癌 ,胰腺期肿瘤 胰腺对比较门脉期更显著 ,有利于小胰腺癌的早期诊断和可切除性的判断。
Objective To study the role of double-phase enhanced pancreatic and portal phase contrast-enhanced spiral CT in early diagnosis and correct staging of small pancreatic cancer. Methods Spiral CT dual-phase enhanced scans were performed on 14 patients with small pancreatic cancer. The scanning delays were 30 s and 65 s respectively. The contrast agent dosage was 100 ml and the injection speed was 3 ml/s. Observe and compare the enhancement of normal pancreas and tumor in two phases. Tumor resection was evaluated according to CT signs and compared with the results of the surgery. Results The tumor pancreatic phase and portal phase were (470.8±20.3) HU and (287.7±162.3) HU (t=2.55.3, P<0.01). In 14 cases of tumors, 11 cases could be removed before surgery and 9 cases were removed during surgery. Conclusion Spiral CT dual-phase enhanced scan can clearly show small pancreatic cancer. The pancreas tumor pancreas is more significant in the comparison of portal vein, which is helpful for the early diagnosis and resection of small pancreatic cancer.