搜索结果: 1-15 共查到“radiofrequency”相关记录15条 . 查询时间(0.046 秒)
Atrial fibrillation and its determinants after radiofrequency ablation of chronic common atrial flutter
atrial fibrillation atrial flutter follow-up radiofrequency catheter ablation
2015/7/29
Aim. Atrial fibrillation (AFib) is a major clinical issue and its occurrence is the main problem after catheter ablation of atrial flutter. The long-term occurrence of AFib after common atrial flutter...
Thermal modelling for endocardiac radiofrequency ablation: comparison of hyperbolic bioheat equation and Pennes bioheat equation with finite element method
Finite Element Method hyperbolic heat equation Pennes heat equation radiofrequency ablation theoretical model
2012/4/17
The objectives of this study are to model the endocardiac radiofrequency (RF) ablation procedure and to employ the Hyperbolic Bioheat Equation (HBE), which takes the thermal wave behaviour into accoun...
An alternate approach to the preparation of transfer-free graphitic carbon films is proposed in this paper. Using a standard radio-frequency sputtering system and a high-temperature annealing procedur...
Surgical Radiofrequency MAZE III Ablation for Treatment of Atrial Fibrillation During Open Heart Surgery
Radiofrequency ablation MAZE ablation Atrial fibrillation
2010/4/2
Background: Atrial fibrillation is a common arrhythmia in patients with rheumatic mitral and other valve diseases who are candidates for valve repair surgeries. Conversion of rhythm to sinus has posit...
It has been well - established that common atrial flutter is due to intraatrial macroreentry and its reentry circuit locates in the right atrium. This reentry circuit has been characterized to involve...
Radiofrequency energy for rewarming of cold extremities
cold air Radiofrequency energy cold extremities thermal stress
2009/7/8
Radiofrequency (RF) coils, developed to resonate at 27.12 MHz, were evaluated for effectiveness in rewarming thermally unprotected extremities of 5 male subjects. Bare hands or bare feet were exposed ...
Biological Effects and Safety of Exposures to Radiofrequency Electromagnetic Fields from Mobile Communications
Biological Effects Radiofrequency Electromagnetic Fields Mobile Communications
2009/6/9
Biological Effects and Safety of Exposures to Radiofrequency Electromagnetic Fields from Mobile Communications.
Effect of variable heat transfer coefficient on tissue temperature next to a large vessel during radiofrequency tumor ablation
heat transfer coefficient tissue temperature radiofrequency tumor ablation
2010/2/25
For tumor ablation procedures typically lasting at least 5 min, this study shows that modeling the heat sink effect of large vessels by applying constant h as a boundary condition will yield precise r...
INTRAOPERATIVE RADIOFREQUENCY AND CRYOABLATION FOR ATRIAL FIBRILLATION IN PATIENTS WITH VALVULAR HEART DISEASE
Atria fibrillation valvular disease radiofrequency cryoablation
2010/4/6
Patients with valvular heart disease and suffering atrial fibrillation of more than 12 months duration have a low probability of remaining in sinus rhythm after valve surgery alone. We performed intra...
Radiofrequency Ablation of Liver Tumors: The First Preliminary Report in Iran
radiofrequency catheter ablation liver tumors
2010/2/1
Background/Objective: Radiofrequency ablation (RFA) is emerging as a new therapeutic technique for unresectable hepatic malignancies. We report our experience with the use of this method for the first...
Theoretical modeling for radiofrequency ablation: state-of-the-art and challenges for the future
radiofrequency ablation state-of-the-art and challenges the future
2010/2/26
Radiofrequency ablation is an interventional technique that in recent years has come to be employed in very different medical fields, such as the elimination of cardiac arrhythmias or the destruction ...
Automatic control of finite element models for temperature-controlled radiofrequency ablation
finite element models temperature-controlled radiofrequency ablation
2010/2/26
We present results of a temperature controlled 3-D FEM model of a RITA model 30 electrode. The control software effectively controlled applied voltage in the FEM model to obtain, and keep electrodes a...
Thermal modeling of lesion growth with radiofrequency ablation devices
Thermal modeling of lesion growth radiofrequency ablation devices
2010/3/1
The data demonstrate the size of thermal lesions is grossly overestimated when calculated using traditional temperature isocontours of 42°C and 47°C. The computational model results predicted lesion d...
Modeling thermal responses in human subjects following extended exposure to radiofrequency energy
modeling thermal human subjects radiofrequency energy
2010/3/1
The model, with previously determined parameter values, was successful in predicting major aspects of human thermoregulatory response to RF energy exposure over a wide frequency range, and at differen...
Finite Element Analysis of Hepatic Radiofrequency Ablation Probes using Temperature-Dependent Electrical Conductivity
Hepatic Radiofrequency Ablation Temperature-Dependent Electrical Conductivity
2010/3/1
The data demonstrate that significant errors are generated when constant electrical conductivity is assumed in coupled electrical-heat transfer problems that operate at high temperatures. These errors...