نتایج جستجو برای: thermal ablation
تعداد نتایج: 263779 فیلتر نتایج به سال:
IMPORTANCE Despite significant advances in surgery, most surgical tools remain basic. Lasers provide a means of precise surgical ablation, but their clinical use has remained limited because of undesired thermal, ionizing, or acoustic stress effects leading to tissue injury. A novel ultrafast, nonionizing, picosecond infrared laser (PIRL) system has recently been developed and is capable, in th...
Pech: There are indeed distinct limitations of thermal ablation such as radiofrequency ablation (RFA), despite RFA being the most frequently used local ablation tool available. However, in many cases anatomical locations with adjacent thermosensitive structures or the size of a specific lesion represent strong limitations in daily routine, requiring more efforts in the development of non-therma...
Hepatocellular carcinoma (HCC) is the fifth most common cause of cancer, and its incidence is increasing worldwide because of the dissemination of hepatitis B and C virus infection. Patients with cirrhosis are at the highest risk of developing HCC and should be monitored every 6 months to diagnose the tumour at an early, asymptomatic stage. Patients with early-stage HCC should be considered for...
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PURPOSE Percutaneous thermal ablation is increasingly being used to destroy hepatic tumors in situ. The success of ablative techniques is highly dependent on adequate ablation zone monitoring, and ultrasound-based strain imaging could become a convenient and cost-effective means to delineate ablation zone boundaries. This study investigates in vivo electrode displacement-based strain imaging fo...
BACKGROUND Microwave endometrial ablation is an effective treatment for dysfunctional uterine bleeding. Patients with leiomyomata, including submucosal leiomyomata up to 3 cm, may also be treated with microwave endometrial ablation. CASES A 46-year-old woman with multiple leiomyomata and menometrorrhagia underwent microwave endometrial ablation. Two months after microwave endometrial ablation...
Methods for the bulk ablation of soft tissue using intense ultrasound, with potential applications in the thermal treatment of focal tumors, are presented. An approximate analytic model for bulk ablation predicts the progress of ablation based on tissue properties, spatially averaged ultrasonic heat deposition, and perfusion. The approximate model allows the prediction of threshold acoustic pow...
Radiofrequency thermal ablation (RFA) is widely used for local solitary liver tumor control. However, the benefit of RFA for colorectal cancer with liver metastases, which is refractory to chemotherapy, remains unknown.We retrospectively enrolled 70 consecutive colorectal adenocarcinoma patients, who had synchronous liver metastases, who were refractory to chemotherapy, and whose life expectanc...
PURPOSE The present study was designed to address the hypothesis that radiofrequency (RF) thermal ablation, as represented by the ClosureFAST system, is associated with improved recovery and quality-of-life (QOL) parameters compared with 980-nm endovenous laser (EVL) thermal ablation of the great saphenous vein (GSV). MATERIALS AND METHODS Eighty-seven veins in 69 patients were randomized to ...
BACKGROUND Radiofrequency thermal ablation is the first therapeutic option in percutaneous treatment of hepatocellular carcinoma but data on its long-term efficacy and safety are not conclusive. AIM This study reports a prospective survey on radiofrequency thermal ablation in north-east Italy. METHODS Data were collected on 401 patients with hepatocellular carcinoma (males 301, mean age: 68...
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