BACKGROUND The relationship between focal pulmonary vein potential and atrial fibrillation (AF) has been confirmed. Pulmonary vein (PV) isolation and circumferential pulmonary vein ablation have been the most commonly used procedures of radiofrequency ablation. However, few studies have investigated the relationship between anatomical characteristics of PV and AF recurrences after radiofrequenc...

BACKGROUND Degenerative spondylolisthesis is one of the major causes for low back pain. Morphological abnormalities of the zygapophysial joints are a predisposing factor in the development of degenerative spondylolisthesis. Therefore, radiofrequency neurotomy seems to be a rational therapy. OBJECTIVES To determine if radiofrequency neurotomy is effective for patients with low back pain and de...

The Nuclear Magnetic Resonance Spectroscopy (MRS) is the study metabolic processes in different biological and chemical samples as tissues, cell cultures, and protein structures. MRS fulfils an important role through its ability to deduce structural information and to withdraw microscopic data from the intermolecular dynamics. The NMR Approach has expand its capacities to cover furthermost medi...

This technical brief presents an overview the design and analysis of planar microcoil designs for use in the actuation of magnetic microstructures and devices. The microcoil’s feature sizes are in the range of microns with current loads less than 1 Ampere. The primary manufacturing method that is considered in modeling and designs of the micro coils is standard MEMS processes; processing method...

Percutaneous catheter ablation using radiofrequency energy can be used to interrupt atrioventricular (AV) conduction in patients with supraventricular tachycardia refractory to drugs. Results of radiofrequency ablation of the AV junction using a custom-designed catheter with a large, 3-mm-long distal electrode, 2-mm interelectrode spacing, and a shaft with increased torsional rigidity were comp...

Laparoscopic radiofrequency ablation of uterine leiomyomas with a new Federal Drug Administration (FDA)-approved device, a device that delivers radiofrequency energy, is a novel procedure that aims to meet patient and physician demand for effective, minimally invasive leiomyoma treatment. However, as a new procedure, the durability of symptom relief, the safety in widespread use, and ultimately...