Details

Autor(en) / Beteiligte

• Kenwright, David A
• Sadhoo, Neelaksh
• Rajagopal, Srinath
• Anderson, Tom
• Moran, Carmel M
• Hadoke, Patrick W
• Gray, Gillian A
• Zeqiri, Bajram
• Hoskins, Peter R

Titel

Acoustic Assessment of a Konjac–Carrageenan Tissue-Mimicking Material at 5–60 MHz

Ist Teil von

• Ultrasound in medicine & biology, 2014-12, Vol.40 (12), p.2895-2902

Ort / Verlag

England: Elsevier Inc

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• Abstract The acoustic properties of a robust tissue-mimicking material based on konjac–carrageenan at ultrasound frequencies in the range 5–60 MHz are described. Acoustic properties were characterized using two methods: a broadband reflection substitution technique using a commercially available preclinical ultrasound scanner (Vevo 770, FUJIFILM VisualSonics, Toronto, ON, Canada), and a dedicated high-frequency ultrasound facility developed at the National Physical Laboratory (NPL, Teddington, UK), which employed a broadband through-transmission substitution technique. The mean speed of sound across the measured frequencies was found to be 1551.7 ± 12.7 and 1547.7 ± 3.3 m s−1 , respectively. The attenuation exhibited a non-linear dependence on frequency, f (MHz), in the form of a polynomial function: 0.009787 f2  + 0.2671 f and 0.01024 f2  + 0.3639 f , respectively. The characterization of this tissue-mimicking material will provide reference data for designing phantoms for preclinical systems, which may, in certain applications such as flow phantoms, require a physically more robust tissue-mimicking material than is currently available.