Cervicogenic dizziness is a sensation of disequilibrium caused by abnormal afferent activity from the neck. Its diagnosis and treatment are challenging. In a case of cervicogenic dizziness, we performed diagnostic upper cervical medial branch nerve blocks with near complete symptomatic relief for around 20 hours. Radiofrequency ablation of these nerves resulted in near complete relief for 7 mon...

Background MR-guided electrophysiology (MR-EP) for the treatment of arrhythmia has the potential advantages of improved soft tissue contrast navigation and visualization of ablation-induced tissue changes. In the past, the development of MR-conditional EP catheters and an appropriate image guidance platform have represented major obstacles. The aim of this work was to establish and evaluate a c...

Complete List of Authors: Wang, Zhigang; University of Dundee, Institute for Medical Science and Technology Luo, Hongyan Nick, Matthias; University of Dundee, Gueorguieva, Mariana; University of Dundee, Andre, Pascal; University of St Andrews, Baker, Richard; University of St Andrews, McLean, Donald; University of Dundee, Brown, Stuart; University of Dundee, Cuschieri, Alfred; University of Dun...

Background. Two catheter electrode systems were compared for delivering radiofrequency current for ablation of the atrioventricular junction. Seventeen patients with drug-resistant supraventricular tachyarrhythmias were studied. Methods and Results. A 6F or 7F catheter with six or eight standard electrodes (1.25 mm wide, 2.5-mm spacing) was used in the first seven patients (group 1). A 7F quadr...

Radiofrequency ablation (RFA) is a minimally invasive technique used to treat some kinds of cancer. Theoretical models can provide information about the biophysics of RFA quickly and cheaply, but their realism is very important. A great influential factor in this realism is the use of mathematical functions to model the temperature-dependence of tissue thermal (k) and electrical (s) conductivit...

extremely low frequency (elf) electromagnetic field (elf-emfs) are widely employed in electrical appliances and different equipment such as television sets, elf-emfs can  affect biological systems by increasing production  ros. the altered balance between ros generation and elimination plays a critical role in a variety of pathologic conditions. ros levels have been observed in several hematopo...

Recent studies have shown that radio frequency (RF) ablation is a simple, safe and potentially effective treatment for selected patients with liver metastases. Despite all recent therapeutic advancements, however, intra-procedural target localization and precise and consistent placement of the tissue ablator device are still unsolved problems. Various imaging modalities, including ultrasound (U...

PURPOSE To report the authors' early experience with radio-frequency (RF) ablation of renal cell carcinoma. MATERIALS AND METHODS Twenty-four percutaneous RF ablation treatments for nine tumors were performed in eight patients with renal cell carcinoma. Indications included coexistent morbidity, previous surgery, or solitary kidney in patients with a life expectancy shorter than 10 years. Sma...

Introduction: XMR systems are a new type of interventional facility in which patients can be rapidly transferred between x-ray and MR systems on a floating table. We have previously developed a technique to register MR and x-ray images obtained from such systems. We are carrying out a programme of XMR guided cardiac electrophysiology study (EPS) and radio frequency ablation (RFA). Aim: The aim ...