自适应性统计迭代重建技术结合低管电压在肝脏三期增强低剂量扫描

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自适应性统计迭代重建技术结合低管电压在肝脏三期增强

低剂量扫描中的应用

贾广生;李金平;户宏艳;赵成磊;姜慧杰

【期刊名称】《中华医学杂志》【年(卷),期】2019(099)003

【摘要】Objective To explore the application value of adaptive statistical iterative reconstruction (ASIR) combined with low tube voltage in three-stage enhanced low-dose scan of liver.Methods From March 2017 to November 2017,two groups which each group included 50 patients were randomly selected at the Second Affiliated Hospital of Harbin Medical University with different stages of arterial phase,delayed phase and portal vein scanning.GE Discovery CT 750 HD Liver CT Ⅲ was used during enhanced scanning.A total of 100 patients included 56 males and 44 females,aged 27-73 years old and 42 patients with hepatocellular carcinoma,44 patients with hepatic hemangioma,and 14 patients with other diseases.The arterial and delayed period of group A patients were scanned with a low dose of 100 kV+ASIR,and the portal vein phase was conventional.Dosage scanning was 120 kV+FPP;the arterial and delayed period of group B was normal dose scanning,120 kV+FPP,and the portal vein phase was low dose scanning,100 kV+ ASIR.At the same time,FBP reconstruction was used for all low-dose scanning phases to obtain low-dose images under normal

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