PURPOSE: To assess the reliability of contrast material-enhanced real-time gray-scale ultrasonography (US) in evaluating posttreatment response of @entity157 ( @entity157 ). MATERIALS AND METHODS: Fifty @entity157 nodules were examined with contrast-enhanced coded phase-inversion harmonic US before and after treatment. Intratumoral vascularity was assessed with continuous imaging in the early arterial phase and with interval-delay scanning to depict @entity5 parenchymal flow during the blood pool phase. Vascular findings at US were compared with those at dynamic computed tomography (CT). RESULTS: In 50 @entity157 nodules before treatment, positive enhancement of @entity5 vessels and @entity5 parenchymal flow (stain) were observed in 47 (94%) and 46 (92%), respectively. Either @entity5 vessel or stain was visualized with coded harmonic US in 49 of 50 nodules. Eighty-one coded harmonic US studies were performed in 49 posttreatment @entity157 nodules. Compared with dynamic CT, the sensitivity, specificity, and accuracy of coded harmonic US in helping to detect positive enhancement in pretreatment @entity157 were 98% (49 of 50), 100% (50 of 50), and 98% (49 of 50), respectively. After treatment, positive enhancement of @entity5 vascularity was observed in 39 (48%) of 81 posttreatment studies, and no enhancement was observed in others (52%). Coded harmonic US demonstrated partial and no enhancement of @entity5 vascularity in four and one nodule, respectively; after transcatheter arterial embolization with iodized oil, evaluation of @entity5 vascularity with dynamic CT was difficult because of the presence of oil. CONCLUSION: With enhancement, coded harmonic US depicted @entity5 vascularity by showing @entity5 vessels in a real-time fashion at continuous imaging and @entity5 parenchymal flow at interval-delay scanning.

Evaluation of posttreatment response of XXXX with contrast-enhanced coded phase-inversion harmonic US: comparison with dynamic CT.

@entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity157 :: ('MESH:D006528', 'Disease') :: ['HCC', 'hepatocellular carcinoma']
@entity157 :: (MESH:D006528,Disease) :: ['hepatocellular carcinoma']
