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Applying Echoes Mean Frequency Shift for Attenuation Imaging in Tissue

  • J. LitniewskiEmail author
  • Z. Klimonda
  • A. Nowicki
Conference paper
Part of the Acoustical Imaging book series (ACIM, volume 30)

Abstract

The purpose of this study was to develop the attenuation parametric imaging technique and to apply it for in vivo characterization of tissue. Local attenuation coefficient was determined by evaluating the frequency downshift that encounters the amplitude spectrum of the interrogating ultrasonic pulse during propagation in the absorbing tissue. Operation and accuracy of the processing methods were verified by assessing the size-independent region of interest (ROI) for attenuation determination and calculating the attenuation coefficient distribution for experimentally recorded tissue-phantom scattered waveforms. The Siemens Antares scanner equipped with Ultrasound Research Interface unit allowing for direct radiofrequency (RF) signals recording was used for B-scan imaging of the tissue- mimicking phantom in vitro and liver in vivo. RF data were processed to determine attenuation coefficient along the B-scan lines. Also, the preliminary studies of backscattered signals from skin recorded using a skin scanner were performed to calculate parametric-attenuation images.

Keywords

Attenuation imaging Parametric imaging Tissue attenuation Amplitude spectrum 

Notes

Acknowledgements

This work was partly supported by the Polish Ministry of Science and Education, projects N N518388234 and 3 T11E 011 30.

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Institute of Fundamental Technological Research, Polish Academy of SciencesWarsawPoland
  2. 2.Polish Academy of SciencesInstitute of Fundamental Technological ResearchWarsawPoland

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