Description

• Title:
  Algorithm for Computationally Efficient Imaging of Sound Speed in Conventional Ultrasound Sonography
• Creator:
  Karwat, Piotr
• Contributor:
  Karwat, Piotr : Department of Ultrasound, Institute of Fundamental Technological Research, Polish Academy of Sciences, Warsaw, Poland
• Description:
  The speed of sound (SoS) in tissues reflects their mechanical properties and therefore can carry valuable diagnostic information. In conventional ultrasound sonography (US), however, this information is not readily available. Furthermore, since the actual SoS is unknown, image reconstruction is carried out using an average SoS value for soft tissues. The resulting local deviations from the actual SoS lead to aberrations in US images. Methods for SoS imaging in US therefore have the potential to enable the correction of aberrations in classical US. In addition, they could also become a new US modality. There are several approaches to SoS image reconstruction. They differ in terms of input data requirements, computational complexity, imaging quality, and the potential for signal analysis at the intermediate stages of processing. This article presents an algorithm with multi-stage processing and low computational complexity. The algorithm was verified through numerical simulations and phantom measurements. The obtained results show that it can correctly estimate SoS in layered media, which in most cases model the tissue structure well. With its computational complexity of O( n), the algorithm can be implemented in real-time ultrasound imaging systems with limited hardware performance, such as portable ultrasound devices.
• Object availability:
  free access
• Rights:
  <b>Archives of Acoustics</b> is an open access journal with all content available with no charge in full text version. The journal content is available under the licencse CC BY-SA 4.0 <a href="https://creativecommons.org/licenses/by-sa/4.0/">https://creativecommons.org/licenses/by-sa/4.0/</a>.
• Date:
  2023.11.29
• Type:
  Article
• Coverage:
  549-558
• Publisher:
  Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics
• Subject:
  speed of sound;
  ultrasound imaging;
  computational complexity
• Identifier:
  ISSN 0137-5075;
  eISSN 2300-262X
• Data provider:
  Czasopisma PAN
• Can I use it?:
  check license
• Type:
  image