Kim, Dong Hun Young Seok Kwon Kang, Dong-Hyun Shim, Shinyong Park, Jun Hong Lee, Byung Chul 2024-01-12T02:49:24Z 2024-01-12T02:49:24Z 2023-02-13 2022-10-12 1948-5719 https://pubs.kist.re.kr/handle/201004/76596 The nonlinear interaction of two waves causes a signal at their difference frequency. Difference-frequency ultrasound (dfUS) is highly dependent on material stiffness, making it a superior alternative to conventional linear ultrasound when it comes to elastographic contrast imaging. We have constructed a 64-element ring array for dfUS imaging based on a 32x32 2D matrix array and conducted experiments on phantoms with various material stiffnesses. The results were quantitatively analyzed and successfully used to implement an elastographic contrast image. English IEEE Difference-Frequency-Based Ultrasonic Contrast Imaging of Material Elasticities Conference 10.1109/IUS54386.2022.9957442 1 IEEE International Ultrasonics Symposium (IUS) IEEE International Ultrasonics Symposium (IUS) US Venice, ITALY 2022-10-10 2022 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IEEE IUS) 000896080400097 2-s2.0-85143757982