Title :
A network analyzer-based tissue characterization system
Author :
Sleva, Michael Z. ; Hunt, William D. ; Connuck, David M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
7/1/1996 12:00:00 AM
Abstract :
A novel ultrasound tissue characterization system is described which utilizes a network analyzer, S-parameter test set, 180/spl deg/ 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.
Keywords :
biomedical equipment; biomedical ultrasonics; medical signal processing; network analysers; 130 ns; 180/spl deg/ hybrid junction; 70 ns; S-parameter test set; commercial piezoelectric polymer transducer; high-frequency pulser/receiver; histologic results; medical instrumentation; mock transducer circuit; neonate porcine carotid artery; network analyzer-based tissue characterization system; round-trip pulselength; ultrasonic tissue characterization; water; Acoustic pulses; Acoustic transducers; Circuit testing; Hybrid junctions; Piezoelectric transducers; Scattering parameters; System testing; Ultra wideband technology; Ultrasonic imaging; Ultrasonic transducers;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
