Open AccessIntravascular ultrasound chirp imaging
Author(s) -
David Maresca,
Krista Jansen,
Guillaume Renaud,
Gijs van Soest,
Xiaolei Li,
Qifa Zhou,
Nico de Jong,
K. K. Shung,
Antonius F.W. van der Steen
Publication year - 2012
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.3679375
Subject(s) - chirp , intravascular ultrasound , microbubbles , ultrasound , contrast (vision) , materials science , transducer , vasa vasorum , chirp spread spectrum , biomedical engineering , acoustics , optics , radiology , medicine , physics , spread spectrum , computer science , telecommunications , channel (broadcasting) , anatomy , laser , direct sequence spread spectrum
We demonstrate the feasibility of intravascular ultrasound (IVUS) chirp imaging as well as chirp reversal ultrasound contrast imaging at intravascular ultrasound frequency. Chirp excitations were emitted with a 34?MHz single crystal intravascular transducer and compared to conventional Gaussian-shaped pulses of equal acoustic pressure. The signal to noise ratio of the chirp images was increased by up to 9?dB relative to the conventional images. Imaging of contrast microbubbles was implemented by chirp reversal, achieving a contrast to tissue ratio of 12?dB. The method shows potential for intravascular imaging of structures in and beyond coronary atherosclerotic plaques including vasa vasoru
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