Mechanism of low-frequency and high-frequency ultrasound-induced inactivation of soy trypsin inhibitors

2021 ◽  
pp. 130057
Author(s):  
Yue Wu ◽  
Wu Li ◽  
Gregory J.O. Martin ◽  
Muthupandian Ashokkumar
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
Trypsin Inhibitors ◽  
High Frequency Ultrasound ◽  
Frequency Ultrasound

A Complete Computational Model of Ultrasound Vibro-Acoustography

2006 ◽  
Author(s):  
Alison E. Malcolm ◽  
Fernando Reitich ◽  
Jiaqi Yang ◽  
Mostafa Fatemi ◽  
James F. Greenleaf
Keyword(s):  
High Resolution ◽  
Optimal Design ◽  
Computational Model ◽  
High Frequency ◽  
Imaging Modality ◽  
Low Frequency ◽  
High Frequency Ultrasound ◽  
Linear Interaction ◽  
Modeling Simulation ◽  
Frequency Ultrasound

Ultrasound vibro-acoustography is a novel medical imaging modality that combines the high resolution of high-frequency ultrasound with the speckle-free images obtained using low-frequency methods. This imaging modality relies on the non-linear interaction of two high frequency beams at slightly different frequencies. We describe the physics of ultrasound vibro-acoustography and outline a strategy for its modeling, simulation, and optimal design.

scholarly journals Ultrassom terapêutico para cicatrização de feridas: revisão sistemática

2017 ◽  
Vol 15 (3) ◽  
pp. 518-529
Author(s):  
Raciele Ivandra Guarda Korelo ◽  
Luiz Claudio Fernandes
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
High Frequency Ultrasound ◽  
Pulsed Ultrasound ◽  
Low Intensity Pulsed Ultrasound ◽  
Low Intensity ◽  
Low Frequency Ultrasound ◽  
Frequency Ultrasound

Introdução: o uso do ultrassom terapêutico (UST) para cicatrização de feridas ainda é discutido pela comunidade científica. Objetivo: determinar se o UST produz desfechos benéficos na cicatrização de feridas e quais tem sido os parâmetros utilizados para proporcionar melhor dose-resposta. Métodos: Foram pesquisadas as bases de dados PubMEd, SciELO e PEDro. Foram selecionados 19 ensaios clínicos, avaliados pelas escalas PEDro e JADAD. Resultados: dos 19 estudos, 8 relacionaram-se à aplicação do NCLFU (Noncontact Low Frequency Ultrasound) com evidência moderada para sua aplicação, 6 à aplicação do HFU (High Frequency Ultrasound) e 1 à aplicação de LIPUS (Low Intensity Pulsed Ultrasound), ambos com baixa evidência. Quanto a relação dose-resposta, não há concordância entre os estudos desta revisão. Conclusões: existe evidência moderada da NCLFU e limitada da HFU como recurso adjuvante para o tratamento de feridas, não sendo possível responder com clareza a melhor relação dose-resposta.

scholarly journals EFFECTS OF LOW FREQUENCY ULTRASOUND COMPARE WITH HIGH FREQUENCY ULTRASOUND IN KNEE OSTEOARTHRITIS

2012 ◽  
Vol 1 (1) ◽  
pp. 9-12
Author(s):  
Syeda Amool Sakeena Rizvi ◽  
Syed Abid Mehdi Kazmi ◽  
Sumaira Imran Farooqi ◽  
Jharna Devi
Keyword(s):  
High Frequency ◽  
Low Frequency ◽  
High Frequency Ultrasound ◽  
Multiple Treatment ◽  
Knee Oa ◽  
Significant Difference ◽  
Low Frequency Ultrasound ◽  
Group A ◽  
Group B ◽  
Frequency Ultrasound

OBJECTIVE To compare the effectiveness of low and high frequency ultrasound (US) technique for treatment of osteoarthritis (OA) of knee joint. It is a pre-post design was used with multiple treatment therapies (A and B). The study was conducted on the 310 patients. The patients were diagnosed knee OA by the orthopedic doctor and recommended to the Physiotherapy department of North and Clifton Campus of Ziauddin Hospital. In this study 310 patients were divided into two groups. Group A of 155 patients received low frequency US treatment of 0.01MHz frequency for 10 min and at the same time Group B of 155 patients received high frequency US treatment of 1MHz for about 3 min. Both the groups had 6 sessions in 3 weeks. There was a mean reduction in the pain and disability with difference of low frequency US and high frequency US pre score and post score treatments of both the groups is 1.2± 0.3 and 4.1± 1.0, there was statistically significant difference between the effects of low frequency US and high frequency US in pain management of knee O.A (P < 0.05). There was difference between the effectiveness of low frequency US

scholarly journals Effectiveness of high frequency ultrasound on pressure ulcer

Medicine ◽  
2019 ◽  
Vol 98 (37) ◽  
pp. e17111 ◽  
Author(s):  
Xiang-qin Gao ◽  
Xiao-mei Xue ◽  
Jian-kang Zhang ◽  
Fei Yan ◽  
Qiu-xia Mu
Keyword(s):  
Pressure Ulcer ◽  
High Frequency ◽  
High Frequency Ultrasound ◽  
Frequency Ultrasound
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