The reasons of focal liver lesions that difficult to detect by conventional ultrasound analysed by ultrasound-CT/MR fusion imaging / 中华超声影像学杂志

ABSTRACT

Objective To analyze the reasons of focal liver lesions that difficult to detect by conventional ultrasound ultrasound-CT/MR fusion imaging.Methods 101 lesions which were confirmed by pathology or clinical diagnosis standards were recruited in the research.All of them were difficult to detect by conventional ultrasound but CT/MR display clearly.Ultrasound-CT/MR fusion imaging was used to observe the size,location and internal echo of the lesions,as well as the background of the surrounding liver parenchyma.Results All cases were successfully registrated,the registration time were 2-6min [(4.1 ±0.6)min].For these 101 lesions,93.1％(94/101) of which the diameter ≤20 mm,56.4％ (57/101) were located in hepatic segments near the diaphragm (such as S2,S4,S7,S8),78.2％ (79/101) were internal isoecho,and 79.2％(80/101) in the background of liver cirrhosis.Conclusions The important reasons that focal liver lesions detected difficult by conventional ultrasound includeslesion size,location,internal echo and the hepatic background.