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The effect of amplitude modulation on subharmonic imaging with chirp excitation
2013
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Subharmonic generation from ultrasound contrast agents depends on the spectral and temporal properties of the excitation signal. The subharmonic response can be improved by using wideband and long duration signals. However, for sinusoidal tone-burst excitation the effective bandwidth of the signal is inversely proportional with the signal duration. Linear frequency modulated (LFM) and nonlinear frequency modulated (NLFM) chirp excitations allow independent control over the signal bandwidth and
doi:10.1109/tuffc.2013.2852
pmid:24297019
fatcat:7nwkgcrq75gencwfm75rg3yzfq