Li, Pai-ChiPai-ChiLiPAI-CHI LI2020-04-162020-04-16200515206149https://scholars.lib.ntu.edu.tw/handle/123456789/484637https://www.scopus.com/inward/record.uri?eid=2-s2.0-33646782945&doi=10.1109%2fICASSP.2005.1416472&partnerID=40&md5=8a89d334e892fca6dec676786c754ae7An approach for tomographic reconstructions of the sound velocity distribution and attenuation coefficient distribution in the breast using linear arrays is proposed. The time-of-flight and attenuation data are acquired by a linear array positioned at the top of a compressed breast and a metal plate is placed at the bottom as a reflector. The refraction effects on the attenuation data are compensated using a technique based on the angular spectrum method. A reconstruction algorithm based on a convex programming formulation and incorporating the segmentation information from the B-mode image is used. The experimental setup includes a phantom made of materials mimicking different tissues in the breast. Results show that obtaining the sound velocity distribution and attenuation coefficient distribution is feasible with the proposed algorithm under current B-mode imaging setup with linear arrays. Such an imaging method has the potential of enhancing the breast cancer detection. ? 2005 IEEE.[SDGs]SDG3Acoustic wave velocity; Algorithms; Attenuation; Image reconstruction; Refraction; Ultrasonic applications; Attenuation coefficient; B-mode image; Sound velocity distribution; Tomographic reconstructions; Tomographyconference paper10.1109/ICASSP.2005.14164722-s2.0-33646782945https://doi.org/10.1109/ICASSP.2005.1416472