The Patterns And Clinical Direct Values Of Contrast-enhanced Ultrasonography In Hepatoma Treated By Microwave Ablation

Objective: To study the relation between the recurrence and the patterns ofcontrast-enhanced ultrasonography in hepatoma treated by microwave ablation.Methods:175patients with225focal liver lesions underwent CEUS from2009to2011.We studied the various CEUS manifestations in the early postoperative period(3~7days after ablation) to analyze the relationship of CEUS manifestations andrecurrence by follow-up. Especially observing these signs:1.hyperemia.2.the bloodvessel in the area of ablation.3.shape of the lesions.4.whether the area of ablationadjoin to the especial position. The final diagnosis was confirmed two iconographymethods and6months follow-up.Results: The manifestations of CEUS were various. There were19lesions recurrencein225lesions. Single-variable analysis showed that hyperemia(P=0.4520) and theblood vessel in the area of ablation （P=0.7187）had no analysis discrepancy betweenthe local recurrent group and non-recurrent group. the shape of ablation-area（P=0.0097）and especial position（P=0.0000）had statistical discrepancy.Conclusion: CEUS could observe the early manifestations after ablation real-timeand dynamically. Also it could make more accurate judgment and reduce theunnecessary overtreatment. Especial position was especial relationship to recurrent,which direct subsequent treatment. Objective: To study clinical value of contrast-enhanced ultrasonography (CEUS)in liver cancer treated by microwave ablation.Methods:175patients with225focal liver lesions underwent CEUS andCECT/CEMRI after microwave ablation therapy from2009to2011.The results ofcontrast-enhanced ultrasound was compared with those of contrast-enhanced MRIwith2weeks. the absence of enhancement in ablation area wan diagnosed ascompletely necrosis, however, the presence of enhancement in ablation area wasdiagnosed as focal recurrence.Results: Complete ablation was diagnosed in lesions of92.0%（207/225）by CEUSand90.6%(204/225)lesions by CECT/CEMRI. As compared to the lastest diagnosisI,The accuracy, specificity and sensitivity rate of CEUS in diagnosis of residual cancerwere97.7%（220/225）、99.0%（204/206）、84.2%（16/19）. The negative and positivepredictive values were98.5%（204/207）、88.8%(16/18).Conclusion: CEUS and CECT/CEMRI had identical diagnostic efficacy inassessment of response to ablation in HCC. It was suitable for widespread in clinicalapplication.