نتایج جستجو برای: ablation

تعداد نتایج: 49404  

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 ...

Journal: :journal of lasers in medical sciences 0
orhan bozoglan kahramanmaras sutcu imam university, faculty of medicine, departments of cardiovascular surgery, turkey bulent mese kahramanmaras sutcu imam university, faculty of medicine, departments of cardiovascular surgery, turkey erdinc eroglu kahramanmaras sutcu imam university, faculty of medicine, departments of cardiovascular surgery, turkey hasan cetin ekerbiçer sakarya university, faculty of medicine, departments of public health, turkey alptekin yasim kahramanmaras sutcu imam university, faculty of medicine, departments of cardiovascular surgery, turkey

introduction: to compare endovenous laser ablation (evla) and radiofrequency ablation (rfa) in different legs in the same individual in patients with venous insufficiency. methods: sixty patients with bilateral saphenous vein insufficiency were included. evla or rfa was applied to one of the patient’s legs and rfa or evla to the other leg. results: evla and rfa complications were hyperemia at 2...

Journal: :the journal of tehran university heart center 0
rezayat parvizi fariborz akbarzadeh

background: atrial fibrillation is a common arrhythmia in patients with rheumatic mitral and other valve diseases who are candidates for valve repair surgeries. conversion of rhythm to sinus has positive effects on quality of life and lower use of medications. the aim of this clinical study was to evaluate the effectiveness of the radiofrequency ablation maze iii procedure in the treatment of a...

E.G. Moros, G. Shafirstein, N.A. Koonce, P. Corry, R.J. Griffin, X. Chen,

Background: The rationale was to develop an ablation approach to destroy regions of tumor resistant to radiation and thus reduce the time required for whole tumor ablation, while improving overall tumor control after radiotherapy. Materials and Methods: The system is composed of a micro positron emission tomography (mPET), 7T magnetic resonance imaging (MRI), and a customized MRI-compatible foc...

باقرصاد رنانی, محمد مهدی , شهماری, آیت , صبوری, امین, کرباسی افشار, رضا ,

Background and purpose: Catheter radiofrequency ablation is the first step in therapeutic approach to Atrioventricular nodal reentrant tachycardia (AVNRT). Different protocols for slow pathway ablation are found to have various ranges of efficacy and side effects. This study compared the effects of partial and complete ablation of the slow pathway on recurrence, symptom relief and complications...

مقدم, منصور , یمینی شریف, احمد ,

AV-node modification by catheter RF energy delivery is treatment of choice in the symptomatic patients with AVNRT. This study included 30 patients with AVNRT (19 women, 11 men). We did slow pathway ablation in 29 cases successfully. Maximum effective energy delivery was 40 watts for 40 msec. 1:1 AV conduction increased from 290±40 msec before ablation to 340±65 msec after ablation. Also AV-node...

Ali-Mohammad alizadeh, fakhri Badaghabadi, hamidreza Moheimani, maryah Rajaei, mohammadali Zeyghami, mohsen Nayebpour, mona pourabouk, saeed saleki, samaneh Naeimipour, sepideh Shariatnezhad, vahid khori,

Introduction: Intranodal pathways of atrioventricular (AV) node play a vital role in the delay of conduction time in response to various atrial inputs. The present study was aimed to determine the frequency-dependent electrophysiological properties of concealed slow pathway according to a functional model of isolated rabbit atrioventricular node preparation after fast pathway ablation. Meth...

Journal: :research in cardiovascular medicine 0
majid haghjoo cardiac electrophysiology research center, rajaie cardiovascular medical and research center, tehran university of medical sciences, tehran, ir iran; cardiac electrophysiology research center, rajaie cardiovascular medical and research center, vali-asr ave, niayesh blvd, tehran, ir iran , tel: +98-2123922163, fax: +98-2122048174 nasim salem cardiac electrophysiology research center, rajaie cardiovascular medical and research center, tehran university of medical sciences, tehran, ir iran masoud rafati rajaie cardiovascular medical and research center, tehran university of medical sciences, tehran, ir iran amirfarjam fazelifar cardiac electrophysiology research center, rajaie cardiovascular medical and research center, tehran university of medical sciences, tehran, ir iran

conclusions: catheter ablation of flutter circuit will not prevent later manifestation of af in 16% of the patients undergoing catheter ablation of the typical afl. bmi was the only independent predictor of af following catheter ablation of the typical afl. objectives; to determine long-term incidence and predictors of af after catheter ablation of typical afl. material and methods: between mar...

Journal: :acta medica iranica 0
moghaddam m yamini sharif a

transcatheter ablation of atrioventricular accessory pathway is the therapy of choice in symptomatic patients. the ablation of posteroseptal accessory pathways thas some important points due to its anatomical location. catheter ablation of posteroseptal accessory pathways via left side approach is time consuming with low success rate and higher complications. we performed successful transcathet...

Journal: :world journal of plastic surgery 0
ali ebrahimi associate professor of plastic surgery ward and trauma research center, baqiyatallah university of medical sciences ,tehran, iran mohammad hossein kalantar motamedi professor of oral & maxillofacial surgery, trauma research center, baqiyatallah university of medical sciences, tehran, iran azin ebrahimi medical student,tehran university of medical sciences, tehran, iran mohammad kazemi trauma research center, baqiyatallah university of medical sciences, tehran, iran amin shams trauma research center, baqiyatallah university of medical sciences, tehran, iran haleh hashemzadeh dental research center, tehran university of medical sciences, tehran, iran

approximately 25% of all oral cavity carcinomas involve the lips, and the primary management of these lesions is complete surgical resection. loss of tissue in the lips after resection is treated with a variety of techniques, depending on the extension and location of the defect. here we review highly accepted techniques of lip reconstruction and some of new trials with significant clinical res...

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