نتایج جستجو برای: thermal ablation
تعداد نتایج: 263779 فیلتر نتایج به سال:
WITH the increasing incidence of renal cell carcinoma (RCC) in the United States and the increasing proportion of patients with tumors detected at an early stage (1–5), nephron-sparing approaches are becoming more popular. These alternatives to radical nephrectomy include partial nephrectomy, wedge resection, and, more recently, in situ thermal ablation. Five-year survival rates after partial n...
Despite the widespread use of pulsed lasers in biomedical applications, the physicochemical mechanisms and dynamics of ablation processes remain unclear. The role of chromophore on pulsed infrared laser ablation of porcine dermis was investigated by performing mass removal and thermal injury experiments. A tunable Transversely Excited Atmospheric (TEA) CO 2 laser was selected for this study bec...
Image-guided percutaneous thermal ablation of metastatic pelvic tumor from gynecologic malignancies.
BACKGROUND Image-guided percutaneous thermal ablation is a commonly performed therapeutic procedure for various tumors. Thermal ablation is not frequently used in the pelvis as a result of anatomic concerns and the potential risk of nontarget tissue injury. TECHNIQUE Percutaneous thermal ablation is a minimally invasive procedure involving special probes inserted through the skin to the targe...
One way of thermal stability methods and ablation improving for polyurethane elastomers to solid propellant rocket insulation, is using of fillers with high ablation property such as silica particles. In this research, first polyurethane-silica composites (16, 25 and 38% by weight) and polyurethane-silica nanocomposites (5, 10, 16 and 25% by weight) were prepared and then interaction, morpholog...
One way to thermal stability and ablation improving of polyurethane elastomers with approach of solid propellant rocket insulation, is use of fillers such as silica particles with property of high ablation. In this study, it was paid to prepare polyurethane-silica composites (16,25 and 38% by weight) and polyurethane-silica nanocomposites (10, 16 and 25% by weight) and then interaction, morphol...
BACKGROUND The purpose of this review is to demonstrate the clinical indications, technical developments, and outcome of liver-directed therapies in interventional oncology of non-colorectal liver metastases. METHODS Liver-directed therapies are classified into vascular transarterial techniques such as chemoperfusion (TACP), chemoembolization (TACE), radioembolization (selective internal radi...
Modeling of thermal-induced mechanical behaviors of soft tissues is of great importance for thermal ablation. This paper presents a method by integrating the heating process with thermal-induced mechanical deformations of soft tissues for simulation and analysis of the thermal ablation process. This method combines bio-heat transfer theories, constitutive elastic material law under thermal load...
The field of focal ablative therapy for the treatment of cancer is characterized by abundance of thermal ablative techniques that provide a minimally invasive treatment option in selected tumors. However, the unselective destruction inflicted by thermal ablation modalities can result in damage to vital structures in the vicinity of the tumor. Furthermore, the efficacy of thermal ablation intens...
Neil M. Khilnani, MD, Clement J. Grassi, MD, Sanjoy Kundu, MD, FRCPC, Horacio R. D’Agostino, MD, Arshad Ahmed Khan, MD, J. Kevin McGraw, MD, Donald L. Miller, MD, Steven F. Millward, MD, Robert B. Osnis, MD, Darren Postoak, MD, Cindy Kaiser Saiter, NP, Marc S. Schwartzberg, MD, Timothy L. Swan, MD, Suresh Vedantham, MD, Bret N. Wiechmann, MD, Laura Crocetti, MD, John F. Cardella, MD, and Robert...
Ablation of expanded polytetrafluoroethylene without disruption of the fine porous structure is demonstrated using an intense femtosecond-pulse laser. As a result of laser-matter interactions near ablation threshold fluence, high-energy ions are emitted, which cannot be produced by thermal dissociation of the molecules. The ion energy is produced by Coulomb explosion of the elements of (-CF(2)-...
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