Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/5863
Título: On the assessment of time-shift variations from backscattered ultrasound for large temperature changes in biological phantoms
Autor: Teixeira, C. A.
Ruano, M. Graca
Pereira, W. C. A.
Palavras-chave: Non-invasive temperature estimation
Temperature models
Time-shift estimation
Ultrasound
Data: 1-Jan-2010
Editora: Elsevier
Resumo: This work reports the assessment of time-shifts (TS) from backscattered ultrasound (BSU) signals when large temperature variations (up to 15 degrees C) were induced in a gel-based phantom. The results showed that during cooling temperature is linear with TS at a rate of approximately 74 ns/degrees C. However during a complete heating/cooling cycle, the relation is highly non-linear. This can be explained by the fact that during cooling the temperature distribution is more uniform. Another problem to report is that TS is very sensitive to external movements.
Peer review: yes
URI: http://hdl.handle.net/10400.1/5863
DOI: http://dx.doi.org/10.1016/j.phpro.2010.01.088
ISSN: 1875-3892
Aparece nas colecções:FCT2-Artigos (em revistas ou actas indexadas)



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