نتایج جستجو برای: radiofrequency spectrum

تعداد نتایج: 241794  

Journal: :Radiation 2022

The critical arguments for radiofrequency radiation exposure limits are currently based on the principle that radio frequencies (RF) and electromagnetic fields (EMFs) non-ionising, their even 100-fold lower than those emitted from Sun in whole RF-EMF spectrum. Nonetheless, this argument has been challenged by numerous experimental theoretical studies diverse biological effects of at much power ...

جعفری معز, هدا , سیف ربیعی, محمدعلی , فراهانی, فرهاد , هاشمیان, فرناز ,

Introduction & Objective: Chronic tonsillitis with caseum has been proven to be the cause of halitosis. The objective of this study was to evaluate the efficacy and safety of temperature-controlled radiofrequency tonsil ablation in the treatment of halitosis caused by chronic tonsil-litis with caseum. Materials & Methods: In this clinical trial study 28 adult patients with halitosis due to ch...

2000
Hyo Keun Lim

Although surgical resection remains the best option as potentially curative therapy for hepatocellular carcinoma, radiofrequency thermal ablation has begun to receive much attention as an effective minimally invasive technique for the local control of unresectable malignant hepatic tumors. Most recent radiofrequency devices equipped with a powerful generator and larger needle electrode permit l...

2009
Stasia Bochnowski Muhlner

We review here the latest studies on efficacy of and techniques employed in radiofrequency neurotomy of the sacroiliac joint. Radiofrequency neurotomy has been shown to have limited evidence in treating sacroiliac joint syndrome. Variability in results has been attributed to individual nerve patterns, improper diagnosis, and selection of patients, as well as variability in the procedure itself....

2017
Shujie Wei Dan Li Yan Zhang Linan Su Yunrong Zhang Qiang Wang Dachun Yang De Li Yongjian Yang Shuangtao Ma

BACKGROUND Catheter-based renal denervation (RDN) is a promising approach to treat hypertension, but innervation patterns limit the response to endovascular RDN and the post-procedural renal artery narrowing or stenosis questions the endovascular ablation strategy. This study was performed to investigate the anti-hypertensive and target organ protective effects of perivascular RDN in spontaneou...

Journal: :The Clinical journal of pain 2005
Roelof M A W van Wijk Jos W M Geurts Herman J Wynne Edwin Hammink Erik Buskens Richel Lousberg Johannes T A Knape Gerbrand J Groen

OBJECTIVES Radiofrequency facet joint denervation procedures have been common practice for 2 decades in treatment of chronic low back pain. We designed this multicenter, randomized, double-blind, sham treatment controlled trial to determine the efficacy of radiofrequency facet joint denervation, as it is routinely performed. METHODS Inclusion criteria were low back pain, duration more than 6 ...

Journal: :Physical Review A 2023

We investigate the system of a heavy impurity immersed in degenerated Fermi gas, where impurity's internal degree freedom (pseudospin) is manipulated by series radiofrequency (RF) pulses at several different times. Applying functional determinant approach, we carry out an essentially exact calculation Ramsey-interference-type responses to RF pulses. These are universal functions multiple time i...

Journal: :The spine journal : official journal of the North American Spine Society 2017
Chang-Hyun Lee Chun Kee Chung Chi Heon Kim

BACKGROUND CONTEXT Radiofrequency denervation is commonly used for the treatment of chronic facet joint pain that has been refractory to more conservative treatments, although the evidence supporting this treatment has been controversial. PURPOSE We aimed to elucidate the precise effects of radiofrequency denervation in patients with low back pain originating from the facet joints relative to...

2015
Alvaro Martinez-Camacho Heather Laskey Blaze Cook

Hepatocellular carcinoma (HCC) is the 3 leading cause of cancer-related death worldwide, and the incidence of HCC is rising in the United States. Patients with cirrhosis of the liver and viral hepatitis are at the highest risk of developing HCC. Radiofrequency ablation has become an accepted first-line treatment for small HCC because of its similar outcomes when compared with surgical resection...

2005
KT WONG TC YUNG KS LUN KYY FAN AKT CHAU

Transcatheter radiofrequency ablation of supraventricular tachycardia was first introduced in 1987. The procedure is now well-accepted as primary treatment for supraventricular tachycardia in paediatric patients. In this report we describe our experience of radiofrequency ablation of accessory pathway mediated supraventricular tachycardia in the past 10 years. From 1994 to 2005, 121 procedures ...

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