نتایج جستجو برای: radio frequency ablation
تعداد نتایج: 594925 فیلتر نتایج به سال:
Background Radiofrequency ablation causes a combination of irreversible and reversible atrial injury. Previous publications have suggested that this can be visualized with a combination of T2-weighted (T2W) and late gadolinium enhancement (LGE) CMR. However, signal intensity (SI) thresholds have not been validated in the atrium. This study sought to compare T2W and LGE with histological finding...
Nowadays, electroanatomical mapping system are widely used to clarify arrhythmic substrates and identify the target of ablation not only in patients with supraventricular tachycardia or atrial fibrillation but also ventricular tachycardia. To achieve good results in the procedure, it is important to obtain precise mapping information and to deliver adequate radiofrequency energy. Although it is...
K. Mori, M. Yamaguchi, H. Fujii, R. Nakagami, T. Furuta, and M. Minami Department of Diagnostic and Interventional Radiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan, Functional Imaging Division, National Cancer Center East Hospital, Kashiwa, Chiba, Japan, Faculty of Health Sciences, Tokyo Metropolitan University, Arakawa, Tokyo, Japan, De...
We report the case of a 59-year-old woman who presented with metastatic ameloblastoma involving the lungs, 20 years after resection of the primary tumor in the mandible. The lesions were debulked on multiple occasions with radiofrequency ablation over an eight-year period with local response. There were no complications related to the procedures. We suggest that radiofrequency ablation is a pos...
We present a model for the optimal placement of mono- and bipolar probes in radio-frequency (RF) ablation. The model is based on a numerical computation of the probe's electric potential and of the steady state of the heat distribution during RF ablation. The optimization is performed by minimizing a temperature based objective functional under these constraining equations. The paper discusses ...
We describe a simple and safe technique to position a bipolar radio-frequency ablation device around the pulmonary veins when performing pulmonary vein isolation. The technique consists of insertion of a rubber catheter with stylet, originally an introducer from a left vent catheter, behind the pulmonary veins, and subsequent placement of the lower jaw of the ablation clamp using a rubber cathe...
Background Atrial fibrillation (AF) is the most common rhythm disturbance. Radio-frequency ablation (RFA) of the left atrium (LA) is effective for drug refractory AF patients. Outcome of RFA procedure depends on the degree of pre-ablation LA fibrosis and amount of post-ablation scar. Late gadolinium enhancement (LGE) imaging can detect fibrosis and visualize scar. However, only few centers with...
We introduce visualization methods for augmented and virtual reality displays that guide minimally invasive tumor-targeting interventions, such as radio-frequency ablation (RFA). Our experimental RFA guidance system performs virtual ablations that geometrically match the real ablations in statically registered phantoms. It provides a head-tracked stereoscopic display that shows a real-time, mot...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید