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目的探讨螺旋CT多期增强扫描对小肝癌诊断的临床价值。方法回顾性分析75例确诊为小肝癌患者的临床资料,所有的病例行螺旋CT多期增强扫描,时间分别为动脉期25～35s,门脉期60～80s,延迟期4～6min,经静脉以2.5～3ml/s的速率高压注射造影剂80～95ml,观察小肝癌在不同时期的强化情况。结果共检出84个病灶,动脉期、门脉期以及延迟期的检出率分别是90.48%、71.43%和69.05%,而且动脉期检出的病灶数明显多于门脉期和延迟期(P<0.01)。结论螺旋CT多期增强扫描使小肝癌呈现典型的表现,提高了诊断与鉴别诊断能力及小肝癌的检出准确性。
Objective To investigate the clinical value of multi-phase helical CT in the diagnosis of small hepatocellular carcinoma (HCC). Methods The clinical data of 75 patients diagnosed as small hepatocellular carcinoma were retrospectively analyzed. All patients underwent spiral CT multi-phase contrast-enhanced scanning for 25 ~ 35s of arterial phase, 60 ~ 80s of portal phase, 4 ~ 6min of delayed phase, At a rate of 2.5 ~ 3ml / s 80 ~ 95ml high-pressure injection of contrast agent to observe the enhancement of small hepatocellular carcinoma in different periods. Results A total of 84 lesions were detected. The detection rates of arterial phase, portal phase and delayed phase were 90.48%, 71.43% and 69.05% respectively, and the number of lesions detected in arterial phase was significantly more than that in portal phase and delayed phase P <0.01). Conclusion Spiral CT multi-phase contrast-enhanced MRI has shown the typical appearance of small hepatocellular carcinoma (HCC), which improves the ability of diagnosis and differential diagnosis and the detection accuracy of small HCC.