scholarly journals Fractional Ablative Radio-Frequency Resurfacing in Asian and Caucasian Skin: A Novel Method for Deep Radiofrequency Fractional Skin Rejuvenation

2012 ◽  
Vol 02 (03) ◽  
pp. 144-150 ◽  
Author(s):  
R. Stephen Mulholland ◽  
D. H. Ahn ◽  
Michael Kreindel ◽  
Malcolm Paul
Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4034 ◽  
Author(s):  
Junfei Yu ◽  
Jingwen Li ◽  
Bing Sun ◽  
Jie Chen ◽  
Chunsheng Li

Radio frequency interference (RFI) is known to jam synthetic aperture radar (SAR) measurements, severely degrading the SAR imaging quality. The suppression of RFI in SAR echo signals is usually an underdetermined blind source separation problem. In this paper, we propose a novel method for multiclass RFI detection and suppression based on the single shot multibox detector (SSD). First, an echo-interference dataset is established by randomly combining the target signal with various types of RFI in a simulation, and the time–frequency form of the dataset is obtained by utilizing the short-time Fourier transform (STFT). Next, the time–frequency dataset acts as input data to train the SSD and obtain a network that is capable of detecting, identifying and estimating the interference. Finally, all of the interference signals are exactly reconstructed based on the prediction results of the SSD and mitigated by an adaptive filter. The proposed method can effectively increase the signal-to-interference-noise ratio (SINR) of RFI-contaminated SAR echoes and improve the peak sidelobe ratio (PSLR) after pulse compression. The simulated experimental results validate the effectiveness of the proposed method.


2006 ◽  
Vol 4 (1) ◽  
pp. 22-26
Author(s):  
Sujeeb Rajbhandari

Cardiac Electrophysiology and Radiofrequency Ablation (EPS & RFA) is one of the newer modalities of treatment in the field of cardiology. This method of treatmentis directed towards cardiac arrhythmias. Gone are the days when a doctor had to rely on medications to treat such conditions. It's an interventional technique which requires catheters, an EP lab system, cardiac catheterization laboratory and an Electrophysiologist.


2021 ◽  
Vol 11 (69) ◽  
pp. 8214-8225
Author(s):  
AURICÉLIA DIAS SANTOS ◽  
AURELIO DIAS SANTOS ◽  
ROSANGELA FROTA RIBEIRO DE VASCONCELOS ◽  
ANA BEATRIZ BEZERRA

Objetivo: Identificar, através de um levantamento bibliográfico, os efeitos da radiofrequência no rejuvenescimento facial. Métodos: Estudo de revisão integrativa, realizado no período de setembro a outubro de 2020. Pesquisados nos bancos de dados: LILACS, SciELO, Periódicos CAPES e PubMed. Os descritores utilizados e relacionados, com o operador booleno "and'; em português e inglês foram: radiofrequência, expressão da face, pele Rejuvenescimento; Fisioterapia e Radio frequency; Face expression; Skin; Rejuvenation; Physiotherapy. Foram realizadas buscas publicações dos últimos 10 anos. Resultados: Após a leitura minuciosa dos artigos elegíveis, foram selecionados três artigos. Os autores relatam que os efeitos da radiofrequência são significativos na redução da extensão e profundidade das rugas e na melhora da aparência da flacidez pele, além de melhora perceptível da expressão da face. Conclusões: Os efeitos da radiofrequência delinearam-se de maneira bastante evidente, principalmente no que diz respeito a melhora do tônus da pele e da diminuição das rugas.


2014 ◽  
Vol 8 (4) ◽  
pp. 236-243
Author(s):  
Cheng-Nan Hu ◽  
Wen-Ju Chen ◽  
Hsuan-Chung Ko

2019 ◽  
Vol 56 (10) ◽  
pp. 4482-4491 ◽  
Author(s):  
Xin-li Ran ◽  
Min Zhang ◽  
Yuchuan Wang ◽  
Yaping Liu
Keyword(s):  

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