An ultrasound contrast agent´s influence on the measured Doppler signal

Author

Sponheim, Nills ; Myhrum, Marte

Author_Institution

Clinical R&D, Nycomed Imaging AS, Oslo, Norway

Volume

2

fYear

1995

fDate

7-10 Nov 1995

Firstpage

1133

Abstract

The purpose of this study was to investigate the possible factors that may influence the Doppler frequency spectrum when an ultrasound contrast agent is used to enhance the signal. Computer simulations of limited frequency resolution and attenuation over the sample volume has been compared to in vitro measurements. The results show that the limited frequency resolution may influence the maximum velocity estimate and the attenuation over the sample volume is of less clinical importance. An ultrasound contrast agent´s main influence on a Doppler measurement is a pure signal enhancement

Keywords

Doppler measurement; biomedical ultrasonics; blood flow measurement; Doppler frequency spectrum; attenuation; computer simulations; limited frequency resolution; maximum velocity estimate; measured Doppler signal; pure signal enhancement; ultrasound contrast agent; Attenuation measurement; Computer simulation; Doppler measurements; Frequency estimation; Frequency measurement; In vitro; Signal resolution; Ultrasonic imaging; Ultrasonic variables measurement; Volume measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495760

Filename

495760