2007/05/16 by Kang Il Lee, Min Joo Choi · 3 citations
Engineering · Mathematics · Medicine · #Acoustics #Attenuation #Attenuation coefficient #Biomedical engineering #Bone health and osteoporosis research #Composite material #Cuboid #Geometry #Materials science #Mathematics #Medicine #Optics #Phase (matter) #Phase velocity #Physics #Porosity #Ultrasonic sensor #Ultrasonics and Acoustic Wave Propagation #Ultrasound Imaging and Elastography
paper · pdf · doi:10.1121/1.2719046
openalex publication_date 2007/05/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27
The variations of phase velocity and normalized broadband ultrasonic attenuation (nBUA) with porosity were investigated in Polyacetal cuboid bone-mimicking phantoms with circular cylindrical pores running normal to the surface along the three orthogonal axes. The frequency-dependent phase velocity and attenuation coefficient in the phantoms with porosities from 0% to 65.9% were measured from 0.65 to 1.10 MHz. The results showed that the phase velocity at 880 kHz decreased linearly with porosity, whereas the nBUA increased linearly with porosity. This study provides a useful insight into the relationships between ultrasonic properties and porosity in bone at porosities lower than 70%.