Abstract: Objective To investigate the evaluation value of contrast-enhanced ultrasound (CEUS) on blood supply in patients with primary liver cancer (PLC) after microwave ablation (MWA).Methods Sixty-six patients with PLC who underwent MWA in our hospital were selected, with a total of 72 lesions. Patients underwent digital subtraction angiography (DSA), enhanced X-ray computed tomography (CT) and CEUS at 1 month after operation. The blood supply of the lesions in the 3 groups was recorded, the angiographic result of DSA was regarded as the gold standard. Consistency analysis was used to evaluate the diagnostic value of enhanced CT and CEUS.Results There was blood supply in the lesion after MWA. The angiographic result of DSA showed that there was not blood supply in 13 lesions and there was blood supply in 59 lesions. Enhanced CT showed that there was not blood supply in 18 lesions and there was blood supply in 54 lesions. The angiographic result of CEUS showed that there was not blood supply in 13 lesions and there was blood supply in 59 lesions. According to the consistency analysis, 54 of 72 lesions were positive by enhanced CT, with a sensitivity of 0.915, a specificity of 1.000, an accuracy of 0.931 and a kappa of 0.796. By consistency analysis, 59 of 72 lesions were positive by CEUS, with a sensitivity of 1.000, a specificity of 1.000, an accuracy of 1.000 and a kappa of 1.000.Conclusion CEUS has a higher accuracy in evaluating blood supply of lesions in PLC patients after MWA, which is worthy of clinical promotion.

Key words: Ultrasound, Primary liver cancer, Microwave ablation, Blood supply