作者通过研究测试了同一病人肝脏造影剂增强的重复性和两种资料分析方法的准确性。14例被选择的病人在平均间隔时间74天内分别接受了两次相同条件的CT检查,(包括造影剂的选择、用量、注射速度、注射部位,开始扫描时间和扫描方式)。在注射造影剂前、后分别测量肝、腹主动脉及门静脉的平均密度。对每一图象分别计算肝脏增强的CT值。用两种方法对增强数据进行分析。第一种方法按注射造 The authors tested the enhanced repeatability of the liver contrast agent in the same patient and the accuracy of the two data analysis methods. Twenty-four selected patients underwent CT examinations under the same conditions (including contrast medium selection, dosage, injection speed, site of injection, time to start scanning and scanning mode) within 74 days of the mean interval. The average density of liver, abdominal aorta and portal vein were measured before and after injection of contrast medium. Liver enhancement CT values ​​were calculated for each image separately. There are two ways to analyze the enhancement data. The first method is by injection