نتایج جستجو برای: radiofrequency interference

تعداد نتایج: 114522  

Journal: :British heart journal 1994
M Renard

Radiofrequency ablation has an established role in the treatment of non-ischaemic ventricular tachycardia. A few patients present with symptomatic but benign ventricular ectopy that can be mapped to the right ventricular outflow tract. The successful use of radiofrequency ablation in a patient with drug resistant, symptomatic ventricular ectopy is reported. Radiofrequency ablation may have a us...

2015
José Manuel Trinidad Ana Isabel Carnota Inmaculada Failde Luis Miguel Torres

Study Design. Quasiexperimental study. Objective. To investigate whether radiofrequency treatment can preclude the need for spinal surgery in both the short term and long term. Background. Radiofrequency is commonly used to treat lumbosacral radicular pain. Only few studies have evaluated its effects on surgical indications. Methods. We conducted a quasiexperimental study of 43 patients who had...

2009
Gianpaolo Carrafiello Domenico Laganà Andrea Ianniello Federico Fontana Monica Mangini Lucia Mocciardini Emanuela Spanò Filippo Piacentino Salvatore Cuffari Carlo Fugazzola

We report a case of a 81-year-old Caucasian man with colorectal carcinoma, treated by surgery in 1998, referred for palliative treatment of a refractory painful caused by osteolytic metastases of 2.5 cm in back-upper ilium spine. Plasma-mediated radiofrequency ablation was performed under conscious sedation, using Fluoroscopic Computer Tomography guidance. After completing the ablation phase of...

Background: Effect of electromagnetic and radiofrequency fields on human health is not well understood, a concern is its effect on male infertility. With the increased use of modern technology, issue of protection against this fields has great importance. infertility is the problem to follow psychological - social consequences. The most common cause of infertility are: male factor, female facto...

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2001
D S Lee P Dorian E Downar M Burns E L Yeo W L Gold M Paquette W Lau D M Newman

AIMS Thromboembolic complications have been reported after radiofrequency ablation but the low incidence of overt clinical events has been a limitation to the study of factors affecting thrombogenic risk. The aim of this study was to determine whether radiofrequency ablation has a procoagulant effect and to examine variables that affect thrombio generation. METHODS AND RESULTS Thirty-seven co...

Journal: :Energies 2023

One of the most common failures or breakdowns that can occur in high-voltage (HV) equipment is due to partial discharges (PDs). This occurs as a result inadequate insulation, aging, harsh environmental effects, manufacturing flaws. PD detection and recognition methods have gained growing attention seen great progress past decades. Radiometric are one investigated approaches their immunity elect...

 هادی صمیمی اردستانی, , جلال مهدیزاده, , مژگان کیانی آسیابر, ,

Background: Resulting from the rough flow of air through the nose and throat during sleep, snoring can arise from transitory obstruction at various levels, rendering the sufferer feeling sleep deprived. A relatively new method using radiofrequency technology, called palatoplasty (somnoplasty), can be used to reduce the size of obstructive tissues in the nose and throat. In this study, we assess...

Journal: :iranian journal of public health 0
seyed mohammad javad mortazavi medical physics & medical engineering department, school of medicine, shiraz university of medical sciences, shiraz, iran ; the center for research on radiological sciences, school of allied medical sciences, shiraz university of medical sciences, shiraz, iran. shahram taeb naser dehghan

radar transmitters emit high-power radiofrequency radiation by creation of a high-voltage and high-frequency alternating electrical current.health effects of occupational exposure to military radar were investigated. visual reaction time was recorded with a simple blind computer-assisted-visual reaction time test. to assess the short-term memory, modified wechsler memory scale test was performe...

Journal: :iranian journal of radiation research 0
s.m.j. mortazavi department of medical physics and medical engineering , school of medicine, shiraz university of medical sciences, shiraz, iran n. erfani shiraz institute for cancer research, school of medicine, shiraz university of medical sciences, shiraz, iran h. mozdarani department of medical genetics, faculty of medical sciences, tarbiat modares university, tehran, iran r. azmoonfar radiology department, school of paramedical sciences, shiraz university of medical sciences, shiraz, iran n. shokrpour school of paramedical sciences, shiraz university of medical sciences, shiraz, iran

background: radiation-induced bystander effect is a response which results in damage in non-irradiated cells in response to signals from the irradiated cells. the aim of the present study was to investigate microwave-induced bystander effect from a gsm mobile phone simulator on induction of apoptosis in jurkat cell line. materials and methods: jurkat cells were divided into three groups of non-...

Journal: :iranian journal of medical physics 0
sayyede batoul shokouhian department of biomedical engineering, faculty of engineering, university of isfahan, isfahan, iran. alireza karimian department of biomedical engineering, faculty of engineering, university of isfahan, isfahan, iran. mohammad mohammad-zadeh information communication technology (ict) faculty, ict ministry, tehran, iran department of nuclear engineering, shahid beheshti university g. c., tehran, iran hamid reza salighe-rad department of medical physics & biomedical engineering and research center for science and technology (rcstim); tehran university of medical sciences, tehran, iran.

introduction radiofrequency planar microcoils are used to increase the resolution of magnetic resonance images of small samples. in this study, we aimed to design and fabricate a spiral planar microcoil constructed on a double-sided printed circuit board (pcb). it has four rings with an internal diameter of 241 microns tuned and matched at 63.8 mhz. materials and methods to achieve the maximum ...

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