Ultrasound bent-ray tomography using both transmission and reflection data

Nghia Q. Nguyen; Lianjie Huang

doi:10.1117/12.2043275

20 March 2014 Ultrasound bent-ray tomography using both transmission and reflection data

Nghia Q. Nguyen, Lianjie Huang

Proceedings Volume 9040, Medical Imaging 2014: Ultrasonic Imaging and Tomography; 90400R (2014) https://doi.org/10.1117/12.2043275
Event: SPIE Medical Imaging, 2014, San Diego, California, United States

Abstract

Ultrasound bent-ray tomography can produce the sound-speed distribution of the breast for detection and diagnosis of breast cancer. However, the conventional ultrasound ray tomography uses only transmission data, leading to low-resolution images. We develop a new ultrasound bent-ray tomography technique using both transmission and reflection data to improve sound-speed reconstructions. We employ an ultrasound reflection imaging technique, Kirchhoff migration, to obtain the locations of reflectors for calculating arrival times of ultrasound refection signals. We use both first-arrival times (time-of-flights) of ultrasound transmission data and arrival times of ultrasound reflection data for sound-speed reconstructions. Our numerical studies show that our new ultrasound bent-ray tomography using both transmission and reflection data significantly improves the image resolution and sound-speed reconstructions compared to the conventional ultrasound ray tomography using only transmission data.

Citation Download Citation

Nghia Q. Nguyen and Lianjie Huang "Ultrasound bent-ray tomography using both transmission and reflection data", Proc. SPIE 9040, Medical Imaging 2014: Ultrasonic Imaging and Tomography, 90400R (20 March 2014); https://doi.org/10.1117/12.2043275

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