TY - JOUR
T1 - The speed of sound and attenuation of an IEC agar-based tissue-mimicking material for high frequency ultrasound applications
AU - Sun, Chao
AU - Pye, Stephen D.
AU - Browne, Jacinta E.
AU - Janeczko, Anna
AU - Ellis, Bill
AU - Butler, Mairead B.
AU - Sboros, Vassilis
AU - Thomson, Adrian J. W.
AU - Brewin, Mark P.
AU - Earnshaw, Charles H.
AU - Moran, Carmel M.
PY - 2012/7
Y1 - 2012/7
N2 - This study characterized the acoustic properties of an International Electromechanical Commission (IEC) agar-based tissue mimicking material (TMM) at ultrasound frequencies in the range 10-47 MHz. A broad-band reflection substitution technique was employed using two independent systems at 21 degrees C +/- 1 degrees C. Using a commercially available preclinical ultrasound scanner and a scanning acoustic macroscope, the measured speeds of sound were 1547.4 +/- 1.4 m.s(-1) and 1548.0 +/- 6.1 m.s(-1), respectively, and were approximately constant over the frequency range. The measured attenuation (dB.cm(-1)) was found to vary with frequency f (MHz) as 0.40f + 0.0076f(2). Using this polynomial equation and extrapolating to lower frequencies give values comparable to those published at lower frequencies and can estimate the attenuation of this TMM in the frequency range up to 47 MHz. This characterisation enhances understanding in the use of this TMM as a tissue equivalent material for high frequency ultrasound applications. (E-mail: [email protected]) (C) 2012 World Federation for Ultrasound in Medicine & Biology.
AB - This study characterized the acoustic properties of an International Electromechanical Commission (IEC) agar-based tissue mimicking material (TMM) at ultrasound frequencies in the range 10-47 MHz. A broad-band reflection substitution technique was employed using two independent systems at 21 degrees C +/- 1 degrees C. Using a commercially available preclinical ultrasound scanner and a scanning acoustic macroscope, the measured speeds of sound were 1547.4 +/- 1.4 m.s(-1) and 1548.0 +/- 6.1 m.s(-1), respectively, and were approximately constant over the frequency range. The measured attenuation (dB.cm(-1)) was found to vary with frequency f (MHz) as 0.40f + 0.0076f(2). Using this polynomial equation and extrapolating to lower frequencies give values comparable to those published at lower frequencies and can estimate the attenuation of this TMM in the frequency range up to 47 MHz. This characterisation enhances understanding in the use of this TMM as a tissue equivalent material for high frequency ultrasound applications. (E-mail: [email protected]) (C) 2012 World Federation for Ultrasound in Medicine & Biology.
U2 - 10.1016/j.ultrasmedbio.2012.02.030
DO - 10.1016/j.ultrasmedbio.2012.02.030
M3 - Article
C2 - 22502881
SN - 0301-5629
VL - 38
SP - 1262
EP - 1270
JO - Ultrasound in Medicine and Biology
JF - Ultrasound in Medicine and Biology
IS - 7
ER -