A network analyzer-based tissue characterization system |
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| Authors: | Sleva M.Z. Hunt W.D. Connuck D.M. |
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| Affiliation: | Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA; |
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| Abstract: | A novel ultrasound tissue characterization system is described which utilizes a network analyzer, S-parameter test set, 180° hybrid junction, and a mock transducer circuit to exploit the wide-band potential of a commercial piezoelectric polymer transducer. The relatively short round-trip pulselength achieved using the system (70 ns in water) is compared to that obtained using a high-frequency pulser/receiver and the same transducer (130 ns in water). Finally, the in vitro acoustic response of a section of neonate porcine carotid artery obtained using the network analyzer-based system is reported, along with histologic results for the same vessel |
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