DocumentCode :
2807587
Title :
A new tissue harmonic imaging scheme with better fundamental frequency cancellation and higher signal-to-noise ratio
Author :
Jiang, Peng ; Mao, Zuhua ; Lazenby, John C.
Author_Institution :
Ultrasound Group, Siemens Med. Syst. Inc., Issaquah, WA, USA
Volume :
2
fYear :
1998
fDate :
1998
Firstpage :
1589
Abstract :
Tissue Harmonic Imaging (THI) is a new ultrasound imaging technique, which uses the harmonic components generated by nonlinear acoustic propagation through human tissues to form an image. Several factors affect THI image quality. First, strong suppression of the fundamental signals is necessary to allow the full dynamic range of the harmonic signals to be seen. This will allow the full benefits of harmonic imaging to be seen. Second, since the harmonic components are much weaker (15-20 dB lower) than the fundamental, they must be enhanced as much as possible relative to noise. This will allow the maximum possible image penetration. This paper will compare the phase inversion technique with another data acquisition and processing scheme from the literature in terms of suppression of fundamental frequencies, and signal-to-noise ratio (SNR) improvement. The comparison will be both theoretical, using a very simple model, and experimental, using data acquired in vitro. The phase inversion technique appears to be a better choice to realize THI in an ultrasound imaging system. This technique gives better cancellation of the fundamental frequencies while simultaneously improving SNR
Keywords :
acoustic signal processing; biological tissues; biomedical ultrasonics; harmonic generation; image enhancement; medical image processing; nonlinear acoustics; polynomial approximation; full dynamic range; fundamental frequency cancellation; harmonic components; high signal-to-noise ratio; human tissues; image quality; in vitro data; linear system response; maximum possible image penetration; multiple-pulse schemes; nonlinear acoustic propagation; nonlinear system model; phase inversion technique; polynomial approximation; scaling scheme; suppression of fundamental frequencies; tissue harmonic imaging scheme; ultrasound imaging technique; Acoustic imaging; Acoustic propagation; Data acquisition; Dynamic range; Frequency; Humans; Image quality; Nonlinear acoustics; Signal to noise ratio; Ultrasonic imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
ISSN :
1051-0117
Print_ISBN :
0-7803-4095-7
Type :
conf
DOI :
10.1109/ULTSYM.1998.765248
Filename :
765248
Link To Document :
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