PMID: 24343081Dec 18, 2013Paper

Ultrasound guided ablation therapy of hepatic colorectal metastases: initial experience of real time virtual sonography navigation system

Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences
Chun-hui YuanTong-lin Zhang

Abstract

To evaluate the feasibility, accuracy and efficacy of the real time virtual sonography navigation and planning system in radio frequency ablation (RFA) of hepatic colorectal metastases. Seventeen hepatic colorectal metastases lesions in 12 patients diagnosed pathologically or clinically in Peking University Third Hospital from Oct. 2011 to Apr. 2013 were enrolled, and all the lesions were diagnosed by CT/MRI but invisible in B-mode ultrasound. The patients included 9 males and 3 females, who were 45-82 years old, with an average age of (64.6±19.2) years. Before RFA, the puncture ablation plan of each lesion was made in the planning system, and during RFA the lesion and the 5 mm ablative margin around were ablated according to the puncture ablation plan. After the image fusion between the ultrasound and CT/MRI, the navigation system could decide the location and boundary of the hepatic colorectal metastases in the ultrasound image. Navigation assisted contrast-enhanced ultrasound (CEUS) was employed right after ablation to decide whether the area of the ablative zone had covered the whole tumor. Additional puncture was applied if the ablative zone had not completely covered the tumor. All the patients received CT/MRI one month a...Continue Reading

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