The reasons of focal liver lesions that difficult to detect by conventional ultrasound analysed by ultrasound-CT/MR fusion imaging

VernacularTitle:超声-CT/MR融合成像分析肝局灶性病变常规超声显示困难的原因
Author: Shufang YUAN ; Kai LI ; Rongqin ZHENG ; Zhongzhen SU ; Erjiao XU
Publication Type:Journal Article
Keywords: Ultrasonography; Liver diseases; Fusion imaging
From: Chinese Journal of Ultrasonography 2014;23(3):235-238
CountryChina
Language:Chinese
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 includes:lesion size,location,internal echo and the hepatic background.