Radiofrequency ablation has been applied to treat hepatocellular carcinoma, with favorable therapeutic outcomes. Nevertheless, practitioners have approached radiofrequency ablation with some reluctance due to the difficulty of identifying isoechoic tumors and recurrent tumors. The aim of the present study is to investigate the efficacy of Real-time Virtual Sonography to treat hepatocellular car...

OBJECTIVE Hyperhidrosis (Hh) and facial blushing (Fb) are conditions caused by hyperactivity of the sympathetic system; they affect around 2% of the population. Severe cases have been typically treated with thoracic sympathectomy through a minimally invasive approach. We sought to determine if severe Hh and/or Fb patients, who are reluctant to go through an operation with general anaesthesia, c...

BACKGROUND Sacroiliac joint pain is a common cause of chronic low back pain. Different techniques for radiofrequency denervation of the sacroiliac joint have been used to treat this condition. However, results have been inconsistent because the variable sensory supply to the sacroiliac joint is difficult to disrupt completely using conventional radiofrequency. Cooled radiofrequency is a novel t...

Along with the explosive growth of products and services utilized in modern information technology applications, wireless communication systems have become essential part of working life. Though majority of workers are exposed to radiofrequency (RF) fields from wireless systems, most telecommunication devices produce field strengths that can be considered harmless. However, there are certain wo...

We present our initial experience with the use of a modified 3-point Dixon technique to obtain reliable fast spin-echo T1- and T2-weighted fat-suppressed images in the soft-tissue neck. The method has less sensitivity to magnetic field inhomogeneity than frequency-selective radiofrequency fat saturation and provides uniform fat suppression even near tissue-tissue and air-tissue interfaces. Clin...

Electrosurgery which can also be called as radiosurgery has been used in dentistry for more than 50years. Electrosurgery is a controlled precise application of radiofrequency electrical current to the soft tissue site to be cut which is achieved by means of carefully designed electrodes. Electrosurgery is used in almost all branches of dentistry. Electrosurgery is a continuously evolving field ...

The signal intensity S is given by: S = γB0NB1g(v)/T Where N is the number of nuclei sampled, B1 is the field due to the applied radiofrequency radiation, and g(v) is the lineshape function. Hence, • S ∝ N (large sample and desirability of high isotopic abundance). • S ∝ γ (signals due to nuclei with large γ easiest to observe). • S ∝ B0 (advantage of maximum B0). • S ∝ 1/T (low temperatures gi...

Nuclear magnetic resonance medical imaging is a new diagnostic tool available to radiologist for investigating the morphology and pathophysiology of the human body. In the presence of constant, stable, and uniform magnetic field and the application of radiofrequency radiation, will enable to produce anatomic cross sections. The physical principles of nuclear magnetic resonance medical imaging a...

Small, controllable, highly accessible quantum systems can serve as probes at the single-quantum level to study a number of physical effects, for example in quantum optics or for electricand magnetic-field sensing. The applicability of trapped atomic ions as probes is highly dependent on the measurement situation at hand and thus calls for specialized traps. Previous approaches for ion traps wi...