PURPOSE To examine the characteristics of lung tumors for which radiofrequency (RF) ablation therapy is effective, and to determine what RF ablation parameters are effective for obtaining complete coagulation of the entire ablation zone with a single RF ablation session. MATERIALS AND METHODS Computed tomography (CT)-guided RF ablation of lung tumors was performed on 82 lesions in 34 patients...

BACKGROUND Radiofrequency ablation inside pulmonary vein (PV) ostia can cause PV stenosis. A novel alternative method of ablation is irreversible electroporation, but the long-term response of PVs to electroporation ablation is unknown. METHODS AND RESULTS In ten 6-month-old pigs (60-75 kg), the response of PVs to circular electroporation and radiofrequency ablation was compared. Ten consecut...

BACKGROUND Catheter ablation of the slow conducting pathway (SP) is treatment of choice for atrioventricular nodal reentrant tachycardia (AVNRT). Although there are abundant data on AVNRT ablation in adult patients, little is known about the long-term results ≥3 years after AVNRT ablation in pediatric patients. METHODS AND RESULTS Follow-up data from 241 patients aged ≤18 years who had underg...

Radiofrequency tissue ablation is a rapidly evolving in situ tissue ablation technique and has received increased attention in the past few years. The applications evolved from ablation of cardiac aberrant conduction fiber, to tumor ablation in bone, liver, kidney, breast, brain, and lung. Among them, hepatic primary and secondary tumor ablation is the most widely studied subject. In this artic...

OBJECTIVE To compare the ablation characteristics of the moving-shot technique (MST) and the fixed electrode technique (FET) for radiofrequency (RF) ablation in an ex-vivo bovine liver tissue model. MATERIALS AND METHODS We performed RF ablation using FET in 110 bovine liver blocks using 11 different ablation times ranging from 5 seconds to 5 minutes (10 blocks per each time duration). Ten bo...

Introduction:Differentiated thyroid carcinoma (DTC) follow-up after thyroidectomy and radioiodine-ablation is performed mainly by thyroglobulin (Tg), diagnostic iodine-131 whole body scan (DxWBS) and sonography. Some patients with undetectable Tg have thyroid-bed uptake after ablation in whom decision making regarding the need for retreatment is still controversial. Me...

BACKGROUND Catheter ablation is used extensively with curative intention in atrial fibrillation. Radiofrequency ablation has long been a standard of care, while cryoballoon technology has emerged as a feasible approach with promising results. Prospective multicenter registry data referring to both ablation technologies in AF ablation therapy are lacking. METHODS Between January 2007 and Augus...

A magnetohydrodynamic numerical model and parallel software for the ablation of cryogenic deuterium pellets in the process of tokamak fueling has been developed based on the method of front tracking of ITAPS Center. The main features of the model are the explicit tracking of material interfaces, a surface ablation model, a kinetic model for the electron heat flux, a cloud charging and rotation ...

The ablation mechanism of fresh porcine skin has been studied using nanosecond laser pulses at the wavelengths of 1064, 532, 266, and 213 nm. We have identified the Na spectral line at 589 nm in the secondary radiation from the ablated skin sample as the signature of tissue ablation and measured the ablation probability near ablation threshold. Ablation depth per pulse has been measured by hist...