Background A good correlation has been found between the extent of late gadolinium enhancement (LGE) and clinical outcome in patients who have undergone radiofrequency (RF) ablation for atrial fibrillation (AF). Residual blood signal with the traditional inversion-recovery (IR) sequence often hampers scar visualization in these patients and causes poor repeatability of scar size measurements. T...

Tantalum oxide is a compound with attractive properties and important applications in optoelectronis. It has a high refractive index and a good thermal and chemical stability. Tantalum oxide thin layers have been deposited by laser ablationpulsed laser deposition (PLD) and radiofrequency assisted pulsed laser ablation (RF-PLD) starting from a Tantalum metallic target in oxygen atmosphere. In th...

In an attempt to correlate the performance of superconducting radiofrequency cavities made of niobium with the superconducting properties, we present the results of the magnetization and ac susceptibility of the niobium used in the superconducting radiofrequency cavity fabrication. The samples were subjected to buffer chemical polishing (BCP) surface and high temperature heat treatments, typica...

We developed a novel coaxial system using a fine guide needle wire (GNW) to safely and easily place the radiofrequency needle under CT-guidance. The GNW consists of a fine needle (diameter, 21-gauge; length, 150 mm) and a wire (0.018 inch, 250 mm). An exclusive radiofrequency cannula (14-gauge; 160 mm) was also used. This system was used for the treatment of six hepatocellular carcinomas in six...

We previously reported that patients with a clinical complete response (CR) following radiofrequency thermal treatment exhibit significantly increased body temperature compared with other groups, whereas patients with a clinical partial response or stable disease depended on the absence or presence of output limiting symptoms. The aim of this study was to evaluate the correlation among treatmen...

Physical agents such as ultraviolet or ionizing radiation and repetitive trauma have been related to the causation of cancer in humans. Much less clear is the association between exposure to radiofrequency, such as radar and microwave radiation to the development of cancer. Sporadic case reports and small series suggest that this type of radiation might lead to cancer or contribute to its evolu...

background: use of cellular phones emitting radiofrequency electromagnetic field (rf-emf) has been increased exponentially and become a part of everyday life. this study aimed to investigate the effects of in vitro rf-emf exposure emitted from cellular phones on sperm motility index, sperm dna fragmentation and seminal clusterin (clu) gene expression. materials and methods: in this prospective ...

conclusions some of the noninvasive body contouring devices in animal and human studies such as cryolipolysis, rf, lllt and hifu showed statistical significant effects on body contouring, removing unwanted fat and cellulite in some body areas. however, the clinical effects are mild to moderate, for example 2 - 4 cm circumference reduction as a sign of subcutaneous fat reduction during total tre...

Radiofrequency (RF) shields have been recently developed for the purpose of shielding portions of the patient's body during magnetic resonance imaging (MRI) examinations. We present an experimental evaluation of a commercially available RF shield in the MRI environment. All tests were performed on 1.5 T and 3.0 T clinical MRI scanners. The tests were repeated with and without the RF shield pres...

This study focused the optimization of radiofrequency (RF) assisted heat pump (HP) drying Ganoderma lucidum. Response surface methodology (RSM) optimized levels three independent variables as air temperature, velocity, and RF power to obtain maximum value Polysaccharide content minimum time. Box–Behnken design (BBD) was employed evaluate effects velocity on time in The optimum predicted conditi...