DocumentCode :
3371788
Title :
Evaluation of acoustic and thermal properties of gellan-gum phantom to mimic biological tissue
Author :
Cortela, G. ; Lima, K.M. ; Maggi, L.E. ; Negreira, C. ; Pereira, W.C.A.
Author_Institution :
Lab. de Acust. Ultrasonora, Inst. de Fis., Uruguay
fYear :
2015
fDate :
23-28 March 2015
Firstpage :
1
Lastpage :
4
Abstract :
A hydrogel-based (gellan gum) tissue mimicking material (TMM) was developed. Its acoustic and thermal properties were characterized. The hydrogel was combined with different sizes of glass spheres. The acoustic properties (attenuation coefficient and the speed of sound) were obtained as a function of the temperature range 20 to 45° C. Specific heat was determined experimentally by the standard mixture method for the same temperature range. The attenuation coefficient presented a quasi-linear dependence on the frequency, such as the most of mammalian tissues. The mean value was 0.59f 0,85 dB·cm-1, at 30° C from 1 to 10MHz. The results suggest that the developed TMM has potential for several applications: development of standard dosimetry techniques, validation numerical models and determination the efficacy of hyperthermia devices.
Keywords :
acoustic wave attenuation; acoustic wave velocity; biological tissues; biomimetics; glass; hydrogels; phantoms; specific heat; attenuation coefficient; biological tissue mimicking; frequency 1 MHz to 10 MHz; gellan gum TMM application; gellan gum phantom acoustic properties; gellan gum phantom thermal properties; glass sphere size variation; hydrogel-based tissue mimicking material; hydrogel-glass sphere combination; hyperthermia device efficacy determination; mammalian tissue; numerical model validation; quasi-linear frequency dependence; sound speed; specific heat; standard dosimetry; standard mixture method; temperature 20 degC to 45 degC; temperature range; Acoustics; Attenuation; Biological tissues; Heating; Temperature measurement; Ultrasonic imaging; Ultrasonic variables measurement; Gellan gum; Tissue-mimicking; ultrasonic attenuation; ultrasonicvelocity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Health Care Exchanges (PAHCE), 2015 Pan American
Conference_Location :
Vina del Mar
ISSN :
2327-8161
Print_ISBN :
978-1-4673-6967-1
Type :
conf
DOI :
10.1109/PAHCE.2015.7173326
Filename :
7173326
Link To Document :
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