Non-uniform lagrange interpolation in B-mode ultrasound image reconstruction

Tóm tắt

This study introduces a signal-processing framework based on non-uniform Lagrange interpolation for improving spatial sampling consistency in ultrasound imaging. The proposed method adaptively adjusts pixel coordinates to make the effective sampling density across the reconstructed image more uniform, thereby mitigating the geometric distortion commonly observed in conventional B-mode ultrasound data. To experimentally validate the approach, a compact B-mode ultrasound acquisition system was developed using an Arduino-based transmitter–receiver module interfaced with a personal computer. The measured echo amplitudes reliably captured key acoustic characteristics of the examined medium, including transmission behavior, reflection properties, and attenuation effects. Following the acquisition, the signals were processed in MATLAB using the implemented non-uniform Lagrange interpolation algorithm. The results demonstrate that the method enables accurate and stable reconstruction of B-mode ultrasound images from the non-uniformly sampled echo data.