Coded excitation and its applications in medical ultrasound imaging / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 175-180, 2005.
Artigo
em Chinês
| WPRIM
| ID: wpr-327106
ABSTRACT
Compared with medical ultrasonic pulse-echo imaging system, coded excitation system has the potential of higher SNR and deeper penetration depth. In this paper, the basic principle of coded excitation is introduced. Through acoustic intensity analysis, the maximum improvement of SNR of ultrasonic image with coded excitation is deduced. Then, guide lines to choose codes in ultrasonic imaging are introduced. Some codes, such as white noise, pseudo-random code, Golay code, Chirp and pseudo-chirp are described in details. At last, the applications of ultrasonic coded excitation in B-mode imaging, Doppler flow measurement, B-flow imaging and harmonics imaging are described.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Transdutores
/
Simulação por Computador
/
Processamento de Imagem Assistida por Computador
/
Processamento de Sinais Assistido por Computador
/
Ultrassonografia
/
Métodos
Tipo de estudo:
Estudo diagnóstico
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2005
Tipo de documento:
Artigo
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