نتایج جستجو برای: thermal ablation

تعداد نتایج: 263779  

Journal: :Physical chemistry chemical physics : PCCP 2013
Gabriele C Messina Philipp Wagener René Streubel Alessandro De Giacomo Antonio Santagata Giuseppe Compagnini Stephan Barcikowski

Using wires of defined diameters instead of a planar target for pulsed laser ablation in liquid results in significant increase of ablation efficiency and nanoparticle productivity up to a factor of 15. We identified several competitive phenomena based on thermal conductivity, reflectivity and cavitation bubble shape that affect the ablation efficiency when the geometry of the target is changed...

Journal: :Chinese journal of cancer 2010
Lin-Na Liu Hui-Xiong Xu Ming-De Lu Xiao-Yan Xie

BACKGROUND AND OBJECTIVE Percutaneous ultrasound-guided thermal ablation is one of the major treatment methods for liver cancer. Tumor location close to the diaphragm or gastrointestinal tract was regarded as the treatment contraindication before due to poor visibility of the tumor or increased risk of thermal injury to the adjacent organs. This study used artificial pleural effusion or ascites...

Journal: :Diagnostic and interventional imaging 2014
T de Baere F Deschamps

Since the introduction of radiofrequency ablation (RFA) for the treatment of liver tumors at the end of the 1990s, indications for local ablation techniques have been extended to other organs, in particular, the lungs, kidneys and bones. These techniques have also been improved, in particular to try and overcome the limitations of radiofrequency techniques, especially the significant decrease i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1377

در طی این پایان نامه ما ابتدا ضمن بیان روند تاریخی علم پلیمرهای و فرایند ablation، مقدار راجع به کاربردهای ablation صحبت می کنیم. سپس در مورد پلیمرها و مشخصات و ویژگیهای مختلف مربوط به آنها مطالبی را ارائه می دهیم. در ادامه همراه با ارائه مدلهای گوناگون مربوط به فرایند ablation و تفاوت آنها با یکدیگر، "مدل فتوگرمایی مرتبه یکم" را به طور مفصل مورد بحث قرار می دهیم. در پایان برنامه های کامپیوتری ...

2016
Xiu-Feng Su Na Li Xu-Fang Chen Lei Zhang Ming Yan

BACKGROUND Radiofrequency ablation (RFA) and microwave ablation (MWA) are the most frequently used thermal ablation methods for the treatment of liver cancer. Liver abscess is a common and severe complication of thermal ablation treatment. OBJECTIVES The objective of this study was to determine the incidence and risk factors of liver abscess formation after thermal ablation of liver cancer. ...

Journal: :Clinical radiology 2017
T de Baere L Tselikas G Gravel F Deschamps

Today, in addition to surgery, other local therapies are available for patients with small-size non-small-cell lung cancer (NSCLC) and oligometastatic disease from various cancers. Local therapies include stereotactic ablation radiotherapy (SABR) and thermal ablative therapies through percutaneously inserted applicators. Although radiofrequency ablation (RFA) has been explored in series with se...

Journal: :Pain physician 2016
David Arsanious Emmanuel Gage Jonathon Koning Mazin Sarhan Gassan Chaiban Mohammed Almualim Joseph Atallah

BACKGROUND One of the potential side effects with radiofrequency ablation (RFA) includes painful cutaneous dysesthesias and increased pain due to neuritis or neurogenic inflammation. This pain may require the prescription of opioids or non-opioid analgesics to control post-procedural pain and discomfort. OBJECTIVES The goal of this study is to compare post-procedural pain scores and post-proc...

Journal: :Photochemistry and Photobiology 1991

Journal: :Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery 2006
Behrooz A Torkian Shuguang Guo Alexander W Jahng Lih-Huei L Liaw Zhongping Chen Brian J F Wong

OBJECTIVE To characterize tissue destruction after CO(2) laser-ablation of the vocal cords with the use of optical coherence tomography (OCT). STUDY DESIGN AND SETTING OCT was used to image fresh porcine vocal cords after laser ablation. OCT and histology estimates of the ablation crater dimensions and the depth of thermal injury were obtained. RESULTS The vocal cord substructures up to 2.2...

Journal: :Journal of B.U.ON. : official journal of the Balkan Union of Oncology 2017
Loukia S Poulou Loukas Thanos Panayiotis D Ziakas Emmanouel Merikas Apostolos Achimastos Constantine Gennatas Konstantinos N Syrigos

PURPOSE Local thermal ablation may extend the scope of palliative therapy in patients with colorectal liver metastasis. We performed a retrospective, case-controlled study to compare patients with colorectal liver metastases that were treated with percutaneous radiofrequency (RF) or microwave (MW) thermal ablation, against the control group of chemotherapy alone. METHODS We described baseline...

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