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Attenuation Imaging with Pulse-Echo Ultrasound Based on an Acoustic Reflector

  • Richard RauEmail author
  • Ozan Unal
  • Dieter Schweizer
  • Valery Vishnevskiy
  • Orcun Goksel
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11768)

Abstract

Ultrasound attenuation is caused by absorption and scattering in tissue and is thus a function of tissue composition, hence its imaging offers great potential for screening and differential diagnosis. In this paper we propose a novel method that allows to reconstruct spatial attenuation distribution in tissue based on computed tomography, using reflections from a passive acoustic reflector. This requires a standard ultrasound transducer operating in pulse-echo mode, thus it can be implemented on conventional ultrasound systems with minor modifications. We use calibration with water measurements in order to normalize measurements for quantitative imaging of attenuation. In contrast to earlier techniques, we herein show that attenuation reconstructions are possible without any geometric prior on the inclusion location or shape. We present a quantitative evaluation of reconstructions based on simulations, gelatin phantoms, and ex-vivo bovine skeletal muscle tissue, achieving contrast-to-noise ratio of up to 2.3 for an inclusion in ex-vivo tissue.

Keywords

Ultrasound Attenuation Computed tomography Speed of sound Limited angle tomography 

Notes

Funding

It was provided by the Swiss National Science Foundation and Innosuisse.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Richard Rau
    • 1
    Email author
  • Ozan Unal
    • 1
  • Dieter Schweizer
    • 1
  • Valery Vishnevskiy
    • 1
  • Orcun Goksel
    • 1
  1. 1.Computer-assisted Applications in MedicineETH ZurichZurichSwitzerland

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