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目的探讨峰值跟踪法进行肝脏CT增强扫描的应用价值。方法 60例肝脏多期增强的病例,用峰值跟踪法进行扫描:在平扫图像中选取腹主动脉在肝脏顶部的横断图像,用圆圈对其进行标记,在注射对比剂10秒钟后,每隔2秒进行扫描一次,当腹主动脉CT值超过150Hu时,立即按下扫描键,嘱患者屏气进行全肝脏扫描。记录从对比剂开始注射到扫描开始时的时间并列表统计。结果 60例进行肝脏多期CT值峰值跟踪扫描的患者,动脉期显示满意度达到100%,对扫描出的图像进行腹主动脉CT值测量,其平均值为280Hu。统计开始全肝脏扫描的时间不同人群有明显差别。结论该方法能保证图像质量。
Objective To investigate the value of peak tracing in enhanced CT scanning of liver. Methods Sixty patients with multi-phase liver enhancement were scanned by peak-following method. The transected images of the abdominal aorta at the top of the liver were selected from the plain images and marked with a circle. Ten seconds after injection of the contrast agent, Scan every 2 seconds, when the CT value of abdominal aorta more than 150Hu, press the scan button immediately, instruct patient hold the breath for the whole liver scan. Record the time from the start of contrast injection to the start of the scan and tabulate the statistics. Results Sixty patients with multi-phase liver CT scan value peaked at 100% in the arterial phase. The CT images of the scanned images were measured with an average of 280 Hu. Statistics start the whole liver scan time different groups have significant differences. Conclusion This method can guarantee the image quality.