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The objective was to evaluate treatment efficiency of a new high-intensity focused ultrasound (HIFU) prototype combining a therapeutic transducer with a sonographic probe. The optimal HIFU sequence was defined on ex vivo samples before in vivo evaluation of tumor ablation was performed by perfusion quantification after contrast agent injection. The original(More)
A tumor needle tract seeding, 20 mm in diameter, was detected with magnetic resonance (MR) imaging in a 72-year-old man, 10 months after radiofrequency ablation of a 55-mm subcapsular hepatocellular carcinoma. This seeding was successfully treated with ultrasound-guided percutaneous radiofrequency ablation. No recurrence was found after a 2-year follow-up(More)
The use of alfentanil was studied in 49 patients undergoing surgery with a duration of at least 90 minutes. Induction was performed with droperidol (Dehydrobenzperidol) and etomidate (Hypnomidate), maintenance with nitrous oxide/oxygen 2:1 and alfentanil. Alfentanil was administered as an initial bolus of 2-3 mg depending on the body weight of the patient,(More)
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