Value of contrast-enhanced ultrasound and enhancement MRI in differetial diagnosis of the orbital neoplasms / 中华超声影像学杂志

ABSTRACT

Objective To evaluate the ability of contrast-enhanced ultrasonography (CEUS ) compared to enhanced MRI scan in differential diagnosis of benign and malign tumor of orbit.Methods CEUS and enhanced MRI was performed in 74 patients with tumor of orbit.These patients were divided into two groups:benign and malignant tumor depended on histological diagnosis.The results were analysed with SonoLiver software.The coincidence rate of diagnosis and enhancement intensity among CEUS,MRI and CEUS+ MRI were compared and the quantitative parameters of CEUS were analysed.Results (1 )The diagnostic accordance rate of benign group by three methods were 90.0%,80.0% and 96.0% respectively, there was statistical difference for diagnostic coincidence rate between the MRI and CEUS+ MRI(P 0.05 ).(2 )The enhancement intensity of CEUS was different between benign and malignant groups (P 0.05).(3)The parameters of tumor imaging obtained time intensity curve(TIC):rise time (RT),half elution time and time to peaking (TTP)were significantly different between benign and malignant groups(P 0.05).Conclusions CEUS had higher diagnostic accuracy than MRI in benign orbital tumor.The contrast enhancement intensity and time-intensity curves provide valuable diagnostic information for differential diagnosis of benign and malignant orbital tumor.