Application of contrast-enhanced ultrasound in the diagnosis of renal hematoma and active hemorrhage / 中华超声影像学杂志

ABSTRACT

Objective To explore the value of contrast-enhanced ultrasound(CEUS) in the diagnosis of hematoma and active hemorrhage of renal trauma. Methods Totally 28 patients with renal trauma were examined by conventional ultrasound and CEUS,respectively,including 24 cases caused after renal biopsy,4closed trauma. The detectability of renal hematoma and active hemorrhage with these two methods were compared. All patients were identified by CT or follow-up studies with ultrasound. Results The detectability of renal hematoma with conventional ultrasound and CEUS were 67. 86% (19/28), 92. 86%(26/28), respectively. There was statistically different for detectability in the diagnosis ( P ＜0.05), and the extent of hematoma was more obvious with CEUS. CEUS diagnosed 7 of 26 were renal hematoma with active hemorrhage,which were difficult to be detected with conventional ultrasound. For renal hematoma,the features of CEUS were no enhancement found in every phase; for renal hematoma with active hemorrhage,the contrast agents overflowed from injured blood vessels and formed irregular remarkable enhanced regions. Conclusions CEUS is useful in diagnosing hematoma and identifying the extent and active hemorrhage of renal trauma,in addition,CEUS is valuable in detecting complications after renal biopsy.