Abstract: Studying the diagnostic sensitivity of abdominal ultrasound combined with dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) in ovarian tumor-like lesions. In patients with clinically suspected ovarian tumor-like lesions. All patients underwent abdominal ultrasound DOS combined with DCE-MRI, with the postoperative pathological results as the "gold standard". To explore the positive and negative findings of abdominal ultrasound combined with DCE-MRI. Compare the diagnostic efficacy of abdominal ultrasound combined with DCE-MRI (specificity, sensitivity). Also compare the resistance index (RI) of abdominal ultrasound combined with DCE-MRI examination. Automatic calculation of volume transfer constant (Ktrans), rate constant (Kep) and the vascular extracellular space volume ratio (Ve) using matching software. Receiver operator characteristic (ROC) curve analysis model diagnostic value. The results found that the sensitivity of abdominal ultrasound combined with DCE-MRI (96.77%) and specificity (98.55%) were higher than those of single abdominal ultrasound and DCE-MRI (P<0.05). The RI index of ovarian tumor group was higher than that of ovarian tumor group, and Ktrans, Kep and Ve levels were lower than that of ovarian tumor group (P<0.05). The optimal cut-off value of drawing ROC curve prediction model was 0.088, suggesting that the diagnostic value of abdominal ultrasound combined with DCE-MRI in ovarian tumor lesions was high.

Key words: abdominal ultrasound, DCE-MRI, ovarian tumor lesions, sensitivity