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Role of multiphase scans by multirow-detector helical CT in detecting small hepatocellular carcinoma

查看全文 作　　者：[1]HongZhao;Kang-[2]RongZhou;Fu-[2]HuaYan 高影响力作者 机构地区：[1]DepartmentofRadiology,FirstHospital,ShanxiMedicalCollege,Taiyuan030001,ShanxiProvince,China;[2]DepartmentofRadiology,ZhongshangHospital,FudanUniversity,Shanghai200032,China高影响力机构 出　　处：《World Journal of Gastroenterology》索引2003年第9卷第10期,共4页高影响力期刊 基　　金：the Ministry Public Health Programme,No.97030220 摘　　要：AIM: To evaluate the role of multiphasic scanning by multirow-detector helical CT (MDCT) in detecing small hypervascular hepatocellular carcinoma (SHCC).METHODS: Multiphasic scanning was carried out in 75patients with SHCC with Marconi MX8000 CT scanner. The early arterial phase (EAP), late arterial phase (LAP) and the portal venous phase (PVP) scans were started at 21 s, 34 s and 85 s respectively. The mean difference of CT values between tumor and liver parenchyma for each scanning phase was measured, and the sensitivity of detection of SHCC in each of these phases and in the combined phase was calculated and statistically analyzed.RESULTS: The mean difference of CT values between tumor and liver parenchyma was significant in 71 lesions≥1 cm in three phases (P<0.05). In 91 tumor foci, the detectability of SHCC was 45.1%, 83.5% and 92.3% in EAP, LAP and double arterial phases (DAP), respectively. The early arterial phase plus the portal venous phase and the double arterial phase plus the portal venous phase were 94.5%, 97.8%,respectively. Whereas the detectability in LAP plus PVP and in DAP plus PVP had no statistical difference.CONCLUSION: The utility of faster speed and thinner slice MDCT and multiphase scanning protocol can improve the detectability of hypervascular small hepatocellular carcinoma.Among which LAP is superior to EAP in depicting the lesions. 关 键 词：多层螺旋CT 小细胞肝癌 诊断价值 影像学表现 临床特点
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