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. Author manuscript; available in PMC: 2011 Jan 1.

Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2010;57(2):305–316. doi: 10.1109/TUFFC.2010.1411

Fig. 4 — Descriptive graph of the use of phantom regions, fast-time band-pass filter and slow-time low-pass filter to separate the bound microbubble echoes from those of tissue and free microbubbles. Fast-time filter and slow-time filter are applied to the radiofrequency (RF) data from the T1R7 imaging sub-sequence. The fast time band-pass filter facilitates the discrimination of microbubble echoes from those of tissue; the slow-time filter is designed to differentiate bound and free microbubble echoes.

Fig. 4 — Descriptive graph of the use of phantom regions, fast-time band-pass filter and slow-time low-pass filter to separate the bound microbubble echoes from those of tissue and free microbubbles. Fast-time filter and slow-time filter are applied to the radiofrequency (RF) data from the T1R7 imaging sub-sequence. The fast time band-pass filter facilitates the discrimination of microbubble echoes from those of tissue; the slow-time filter is designed to differentiate bound and free microbubble echoes.