不同剂量对比剂用于16排螺旋CT增强扫描原发性肝癌的影像学特点

Radiological features of using different doses contrast dosage in 16-slice CT enhancement scan for primary carcinoma of the liver

目的探讨注射不同剂量的对比剂进行原发性肝癌16排螺旋CT增强扫描时的影像学特点。方法 2011年1月～2012年6月,选择在我院诊断治疗的原发性肝癌患者42例为研究对象,随机分为两组各21例,A组给予80～90 mL对比剂进行增强扫描,B组采用60～75 mL对比剂进行增强扫描。比较不同窗口期影像学特点。结果 42例患者中13例动脉期边缘呈不规则强化,在门静脉期强化向中心推进;6例患者动脉期呈现不规则的斑片状强化。A组患者在门静脉期仍然明显强化,部分患者在延迟扫描的时候也明显强化。B组患者动脉期强化明显,在门静脉期密度逐渐下降。结论在16排螺旋CT增强扫描原发性肝癌时,注射对比剂的剂量不同,影像学表现也有差异。

Objective To discuss radiological features of using different doses contrast dosage in 16-slice CT enhancement scan for primary carcinoma of the liver. Methods From Jan 2011 to Jun 2012, 42 cases with primary carcinoma of the liver were divided randomly into A and B groups, each 21 cases. A group was injected contrast dosage 80-90 mL, and B group was 6 0-75 mL. Radiological features were compared between two groups. Results Thirteen cases showed circle Irregular strengthen in arterial phase. Six cases showed patchy strengthen in arterial phase. A group showed strengthen in portal venous phase, some showed strengthen in delayed scanning. B group showed strengthen in arterial phase, in the portal vein phase density gradually decreased. Conclusion Using different doses contrast dosage in 16-slice CT enhancement scan for primary carcinoma of the liver shows different radiological features.