Synthetic Aperture Imaging and Doppler Spectral Analysis
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Synthetic Aperture Imaging (SAI) and Doppler Spectrum generation represent crucial technologies in modern medical imaging. Synthetic aperture imaging enhances resolution by algorithmically combining reflected signals from multiple transducer elements into a composite receive signal, typically implemented through delay-and-sum beamforming or Fourier-based reconstruction methods. Doppler spectrum generation employs frequency shift analysis of blood flow velocities to create hemodynamic images, where signal processing involves Fast Fourier Transform (FFT) algorithms to convert time-domain signals into velocity distributions. These techniques have gained widespread adoption in medical diagnostics for vascular imaging and tissue characterization, contributing significantly to advancements in medical imaging science through improved signal processing pipelines and real-time implementation capabilities.
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