2004-04-01
Experimental evaluation of a non-linear coded excitation method for contrast imaging
Publication
Publication
Ultrasonics , Volume 42 - Issue 1-9 p. 671- 675
Previously, we have shown that for a single bubble, using chirps as the excitation signal improves both the linear and the non-linear response. Computer simulations of randomly distributed contrast agent bubbles show an increase of 10-13 dB in response when comparing pulse excitations with chirp excitations that have equal bandwidths and peak amplitudes. Second harmonic compression of simulated bubble echoes with chirp excitation shows low side-lobe levels and limited loss of axial resolution when compared to pulse excitation. Experimental results from water tank measurements with SonoVue™ contrast agent are in agreement with computer simulations showing increased signal-to-noise ratio and an increase of ∼12 dB at the second harmonic when comparing pulse and chirp excitation.
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| doi.org/10.1016/j.ultras.2003.12.013, hdl.handle.net/1765/70906 | |
| Ultrasonics | |
| Organisation | Department of Cardiology |
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Borsboom, J., Chin, C., & de Jong, N. (2004). Experimental evaluation of a non-linear coded excitation method for contrast imaging. In Ultrasonics (Vol. 42, pp. 671–675). doi:10.1016/j.ultras.2003.12.013 |
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