Intravascular ultrasound chirp imaging

Journal article (2012)
Department
IST/Imaging Science and Technology (AS) (TU Delft)
Copyright: American Institute of Physics
DOI: https://doi.org/doi:10.1063/1.3679375
Biomedical ultrasonics Blood vessels Biomedical transducers Chirp modulation Medical disorders Ultrasonic transducers
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Published Date

25-01-2012

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Source:

Applied Physics Letters, 100 (4), 2012

ISSN:

0003-6951

ISBN:

0003-6951

Source:

http://link.aip.org/link/doi/10.1063/1.3679375

Faculty

Applied Sciences

Department

IST/Imaging Science and Technology

Abstract

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 vasorum