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为确定螺旋CT在静脉注射对比剂后延迟20s早期扫描是否比延迟60～70s的标准延迟扫描能更好地显示胰腺实质增强,作者对120例病人进行了双期螺旋CT扫描,男77例,女43例,年龄18～85岁。采用压力注射器经静脉快速注射150ml碘苯六醇,团注对比剂开始后20s在屏气状态下行第一次扫描,扫描自膈顶开始,范围包括胰腺和肝脏,随后在团注后49～71s行第二次扫描。测定胰腺头、体、尾在动脉期(AP)和门静脉期(PVP)的CT值,并进行比较和统计学处理。结果显示,AP的平均胰腺增强程度(82HU±3)明显高于PVP(62HU±Z)(P<0.001),其中AP较PVP胰腺CT值高10HU者有66/92例(72％)。AP的平均延迟时间为32s±2,PVP为71s±7。作者认为,在观察胰腺时,双期螺旋
To determine whether delayed 20s early spiral CT scan of the pancreas is better than a standard delayed scan delayed by 60-70s after intravenous injection of contrast agent, the authors performed a double-phase spiral CT scan of 120 patients, including 77 males and 77 females, Female 43 cases, aged 18 to 85 years. Rapid intravenous injection of iopamide with a pressure syringe, bolus injection of contrast agent for the first 20s in the breath holding state, scanning from the top of the diaphragm, covering the pancreas and liver, followed by 49-71s after the bolus injection The second scan. The CT value of the pancreas head, body and tail in the arterial phase (AP) and portal vein phase (PVP) were determined and compared and statistically analyzed. The results showed that the average degree of pancreatic enhancement (82HU ± 3) in AP was significantly higher than that in PVP (62HU ± Z) (P <0.001), of which 66/92 (72%) were higher in AP compared with PVP. The average delay time for AP is 32s ± 2 and for PVP is 71s ± 7. The authors believe that in the observation of the pancreas, two-phase spiral