The Influence of Shape and Duration of Excitation Pulse on the Reconstruction in Magnetoacoustic Tomography with Magnetic Induction

The article is devoted to the investigation of the influence of the shape and duration of the excitation pulse on the quality of the reconstruction images in the inverse problem of Magnetoacoustic tomography with magnetic induction (MAT-MI). To solve this problem, the obtained reconstruction images were subjected to a binarization process, and their quality with respect to the original image was determined using Pearson's linear correlation coefficient (PCC) and peak signal-to-noise ratio (PSNR) indicator. The reconstruction results for different shapes and durations of the excitation pulse were analyzed. Additionally, the results obtained were compared with the quality indicators of the excitation signal measured in the MAT-MI system built at the Electrical Engineering Faculty, West Pomeranian University of Technology in Szczecin, Poland. It turns out that, of all the shapes and pulse durations tested, a delta shape pulse of duration equal to 1 μs gave the best results in terms of the greatest similarity of the reconstructed image to the reference image. More conclusions were incorporated in the paper body.