Statistical estimation of the regularization parameter for ultrasound tomographic reconstructions and its noise tolerance

Author(s)

Ceccato, Roberto ; Furuie, Sergio ; Bottenus, N ; Ruiter, NV

• Document type: Journal article
• Source: MEDICAL IMAGING 2022: ULTRASONIC IMAGING AND TOMOGRAPHY; v. 12038, p. 11-pg., 2022-01-01.

Abstract

Refracted ray-path model in transmission-based ultrasound tomography (USCT) is a promising medical imaging technique. Although, most reconstructing methods for this technique fall into ill-conditioned problems that require prior information and regularization for solving, in this case choosing the regularization parameter by guessing and testing might be a time consuming task. The current report intends to present and test the robustness against measurement noise of a statistical estimation of Tikhonov regularization factor needed in refraction-corrected sound speed distribution in transmission-based USCT. (AU)

• FAPESP's process: 21/04814-9 - Cavitation detection in cardiac sonothrombolysis: investigation of alternatives
• Grantee: Sergio Shiguemi Furuie
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/21435-9 - Investigation of efficient alternatives for configuring ultrasonic transducers for cardiac sonothrombolysis
• Grantee: Sergio Shiguemi Furuie
• Support Opportunities: Regular Research Grants