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Novel instrument for high‐resolution ultrasound flow imaging
Author(s) -
Tortoli P.,
Guidi F.,
Guidi G.,
Berti P.,
Atzeni C.
Publication year - 1997
Publication title -
international journal of imaging systems and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.359
H-Index - 47
eISSN - 1098-1098
pISSN - 0899-9457
DOI - 10.1002/(sici)1098-1098(1997)8:5<438::aid-ima4>3.0.co;2-b
Subject(s) - computer science , doppler effect , computation , signal (programming language) , signal processing , ultrasound , fourier transform , flow (mathematics) , acoustics , fast fourier transform , resolution (logic) , range (aeronautics) , optics , artificial intelligence , algorithm , digital signal processing , materials science , computer hardware , physics , astronomy , quantum mechanics , mechanics , composite material , programming language
In multigate systems employed in Doppler flow‐imaging equipment, the velocities of targets located at different ranges along the ultrasound beam axis are simultaneously detected. Typically, to reduce the computation efforts, this processing is aimed at extracting a single parameter (e.g., the mean velocity) from each signal. In this article, a novel ultrasound multigate instrument is presented capable of providing a detailed analysis of Doppler signals originated from 64 different range cells. By means of a dedicated high‐speed fast‐Fourier transform processor, these signals are transformed into the frequency domain without loss of information. The implementation of the new multigate system is described here, and the pieces of information which it can provide are discussed. Significant results obtained in vitro and in vivo demonstrate that the new instrument is capable of accurately reproducing the actual velocity profiles of the interrogated flow. © 1997 John Wiley & Sons, Inc. Int J Imaging Syst Technol, 8, 438–443, 1997