Initial observation of blast injury of liver by real-time shear wave elastography / 中华超声影像学杂志

ABSTRACT

Objective To explore the application value of real-time shear wave elastography(SWE) in the liver injury caused by the blast injury.Methods The abdominal mild,moderate and severe blast injury animal models were built,liver and abdominal cavity conventional ultrasound scan and liver SWE measurement were processed before and immediately post-blast,and then the two groups' liver alanine aminotransferase (ALT) and the liver pathology results were compaired.Results The conventional ultrasound scan,immediately after the injury,had found no abnormities of the hepatic tissue in the mild blast injury group,while varying degrees of liver capsular rupture,part of the liver parenchyma regional uneven echo,subcapsular hematoma,obvious liver parenchyma interruption,effusion between the disruption of liver parenchyma and abdominal cavity effusion etc.a series of liver injury had been found in the moderate and severe groups,and the severe blast injury group was more obvious.Three groups' immediately liver elasticity and ALT of post-blast liver injury were increased compared with the pre-blast,the liver elasticity and ALT of each group pre-and post-blast comparing had statistically signifcant (P ＜0.05),and the three groups post-blast immediately liver elasticity and ALT and any two groups' comparing also had statistically significant (P ＜0.05).Conclusions After the blast injury,the changes of liver elasticity were associated with the liver injury degree,the higher elasticity values suggest the heavier damage.Based on conventional ultrasonography,SWE could provide a new evaluation method for the judgement of liver balst injury,especially in the diagnosis of mild liver blast injury.