Wave-based ultrasound transmission tomography using the paraxial approximation in 2D

Olga Molchanova; Hartmut Gemmeke; Michael Zapf; Torsten Hopp; Hongjian Wang; Nicole Ruiter

doi:10.1117/12.2611544

4 April 2022 Wave-based ultrasound transmission tomography using the paraxial approximation in 2D

Olga Molchanova, Hartmut Gemmeke, Michael Zapf, Torsten Hopp, Hongjian Wang, Nicole Ruiter

Proceedings Volume 12038, Medical Imaging 2022: Ultrasonic Imaging and Tomography; 120380P (2022) https://doi.org/10.1117/12.2611544
Event: SPIE Medical Imaging, 2022, San Diego, California, United States

Abstract

Breast cancer is the most common cancer for women worldwide. 3D Ultrasound Computed Tomography (3D USCT) is a novel imaging method for early breast cancer diagnosis, which allows reconstruction of quantitative tissue parameters like speed of sound and attenuation. For reconstruction we use the paraxial approximation of the Helmholtz equation as forward model. We have realized the forward solution, backprojection and reconstruction for a ring transducer arrangement. The reconstruction software was evaluated with data simulated with k-Wave, resulting in the mean error for the speed of sound map of 12.6 m/s for a pixel size of 0.3 mm. Spatial resolution was estimated with a resolution phantom containing circular inclusions with realistic speed of sound values for breast tissues, allowing maximum resolution of 2 mm. In this paper we show that our method has accurate forward solution, we present the new backprojection technique and initial results of reconstructing simulated data.

Conference Presentation

Citation Download Citation

Olga Molchanova, Hartmut Gemmeke, Michael Zapf, Torsten Hopp, Hongjian Wang, and Nicole Ruiter "Wave-based ultrasound transmission tomography using the paraxial approximation in 2D", Proc. SPIE 12038, Medical Imaging 2022: Ultrasonic Imaging and Tomography, 120380P (4 April 2022); https://doi.org/10.1117/12.2611544

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