The application of coded excitation technology in medical ultrasonic Doppler imaging

Weifeng Li; Xiaodong Chen; Jing Bao; Daoyin Yu

doi:10.1117/12.755702

22 January 2008 The application of coded excitation technology in medical ultrasonic Doppler imaging

Weifeng Li, Xiaodong Chen, Jing Bao, Daoyin Yu

Proceedings Volume 6833, Electronic Imaging and Multimedia Technology V; 68330A (2008) https://doi.org/10.1117/12.755702
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Medical ultrasonic Doppler imaging is one of the most important domains of modern medical imaging technology. The application of coded excitation technology in medical ultrasonic Doppler imaging system has the potential of higher SNR and deeper penetration depth than conventional pulse-echo imaging system, it also improves the image quality, and enhances the sensitivity of feeble signal, furthermore, proper coded excitation is beneficial to received spectrum of Doppler signal. Firstly, this paper analyzes the application of coded excitation technology in medical ultrasonic Doppler imaging system abstractly, showing the advantage and bright future of coded excitation technology, then introduces the principle and the theory of coded excitation. Secondly, we compare some coded serials (including Chirp and fake Chirp signal, Barker codes, Golay's complementary serial, M-sequence, etc). Considering Mainlobe Width, Range Sidelobe Level, Signal-to-Noise Ratio and sensitivity of Doppler signal, we choose Barker codes as coded serial. At last, we design the coded excitation circuit. The result in B-mode imaging and Doppler flow measurement coincided with our expectation, which incarnated the advantage of application of coded excitation technology in Digital Medical Ultrasonic Doppler Endoscope Imaging System.

Citation Download Citation

Weifeng Li, Xiaodong Chen, Jing Bao, and Daoyin Yu "The application of coded excitation technology in medical ultrasonic Doppler imaging", Proc. SPIE 6833, Electronic Imaging and Multimedia Technology V, 68330A (22 January 2008); https://doi.org/10.1117/12.755702

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KEYWORDS

Doppler effect

Ultrasonics

Imaging systems

Ultrasonography

Medical imaging

Signal to noise ratio

Image quality

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