The traditional microwave excitation with single-pulse-width in microwave-induced thermoacoustic imaging (TAI) technology is difficult to balance the relationship between resolution and imaging depth when imaging biological tissues of different sizes. To alleviate this limitation, we have developed a multi-scale rapid TAI system. By adjusting the microwave pulse width, multi-scale imaging of joints of various sizes is performed, and the joint tissues in the TAI images are analyzed in conjunction with Magnetic Resonance Imaging (MRI) results. The experimental results validate the effectiveness of the multi-pulse-width excitation for multi-scale imaging method.
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Tao et al. (2024) studied this question.
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