Coupling agents in therapeutic ultrasound: Acoustic and thermal behavior

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dc.contributor.author Casarotto, Raquel Aparecida
dc.contributor.author Adamowski, Julio Cesar
dc.contributor.author Fallopa, Flávio [UNIFESP]
dc.contributor.author Bacanelli, Fernando
dc.date.accessioned 2016-01-24T12:34:10Z
dc.date.available 2016-01-24T12:34:10Z
dc.date.issued 2004-01-01
dc.identifier http://dx.doi.org/10.1016/S0003-9993(03)00293-4
dc.identifier.citation Archives of Physical Medicine and Rehabilitation. Philadelphia: W B Saunders Co, v. 85, n. 1, p. 162-165, 2004.
dc.identifier.issn 0003-9993
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/27520
dc.description.abstract Casarotto RA, Adamowski JC, Fallopa F, Bacanelli F. Coupling agents in therapeutic ultrasound: acoustic and thermal behavior. Arch Phys Med Rehabil 2004;85:162-5.Objective: To compare transmissivity data and thermal behavior of 4 coupling media.Design: Experimental.Setting: Postgraduate rehabilitation program in Brazil.Specimens: Four coupling media: gel, mineral oil, white petrolatum, and degassed water.Interventions: Not applicable.Main Outcome Measures: the transmission, attenuation, reflection coefficient, and acoustic impedance of gel, mineral oil, white petrolatum, and degassed water were measured with a density measurement cell. the temperature variation in the therapeutic ultrasound transducer was measured with a thermocouple.Results: the transmissivity data showed that the water and gel presented the highest transmission coefficient, the lowest reflection, and an attenuation coefficient and acoustic impedance close to that of the skin. the thermal data revealed the highest heating in the transducer during the insonation with white petrolatum and mineral oil, resulting from the thermal conductivity features of each medium.Conclusions: Transmissivity data obtained showed that water and-gel present the best acoustic features. in ultrasound therapy, with the direct contact technique using thin layers of coupling agents, any product may be used, because the effect of the attenuation coefficient does not play a significant role when layers are as thin as those used in this experiment. en
dc.format.extent 162-165
dc.language.iso eng
dc.publisher W B Saunders Co
dc.relation.ispartof Archives of Physical Medicine and Rehabilitation
dc.rights Acesso aberto
dc.subject gels en
dc.subject petrolatum en
dc.subject rehabilitation en
dc.subject ultrasonic therapy en
dc.subject ultrasonography en
dc.subject water en
dc.title Coupling agents in therapeutic ultrasound: Acoustic and thermal behavior en
dc.type Artigo
dc.contributor.institution Universidade de São Paulo (USP)
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Univ São Paulo, Dept Physiotherapy Occupat Therapy & Fonoaudiol, BR-05508 São Paulo, Brazil
dc.description.affiliation Univ São Paulo, Dept Mech Engn, BR-05508 São Paulo, Brazil
dc.description.affiliation Universidade Federal de São Paulo, Dept Orthopaed, São Paulo, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Dept Orthopaed, São Paulo, Brazil
dc.identifier.doi 10.1016/S0003-9993(03)00293-4
dc.description.source Web of Science
dc.identifier.wos WOS:000187892800026



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