Impact of local attenuation approximations when estimating correlation length from backscattered ultrasound echoes

被引：0
|
作者：
Bigelow, Timothy A. [1 ]
O'Brien Jr., William D. [2 ]
机构：
[1] Department of Electrical Engineering, University of North Dakota, Box 7165, Grand Forks, ND 58202, United States
[2] Bioacoustics Research Laboratory, Department of Electrical and Computer Engineering, University of Illinois at Urbana - Champaign, 405 N. Matthews, Urbana, IL 61801, United States
来源：
Journal of the Acoustical Society of America | 2006年 / 120卷 / 01期
关键词：
Estimating the characteristic correlation length of tissue microstructure from the backscattered power spectrum could improve the diagnostic capability of medical ultrasound. Previously; size estimates were obtained after compensating for source focusing; the frequency-dependent attenuation along the propagation path (total attenuation); and the frequency-dependent attenuation in the scattering region (local attenuation). In this study; the impact of approximations of the local attenuation on the scatterer size estimate was determined using computer simulations and theoretical analysis. The simulations used Gaussian impedance distributions with an effective radius of 25 μm randomly positioned in a homogeneous half-space sonified by a spherically focused source (f/1 to f/4). The approximations of the local attenuation that were assessed neglected local attenuation (i.e; assume 0 dB/cm-MHz) neglected frequency dependence of the local attenuation; and assumed a finite frequency dependence (i.e; 0.5 dB/cm-MHz) independent of the true attenuation of the medium. Errors in the scatterer size estimate due to the local attenuation approximations increased with increasing window length; increasing true local attenuation and increasing f number. The most robust estimates were obtained when the local attenuation was approximated by a tissue-independent attenuation value that was greater than 70% of the largest attenuation expected in the tissue region of interest. © 2006 Acoustical Society of America;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：546 / 553
相关论文
共 50 条
  • [21] Enhancing Tissue Attenuation Estimation from Backscattered Ultrasound Using Spatial Compounding and Synthetic Aperture Techniques
    Klimonda, Ziemowit
    Litniewski, Jerzy
    Nowicki, Andrzej
    ACOUSTICAL IMAGING, VOL 31, 2012, 31 : 181 - 190
  • [22] BOUNDS ON ESTIMATING THE ACOUSTIC ATTENUATION OF SMALL TISSUE REGIONS FROM REFLECTED ULTRASOUND
    KUC, R
    PROCEEDINGS OF THE IEEE, 1985, 73 (07) : 1159 - 1168
  • [23] ESTIMATING THE ACOUSTIC ATTENUATION COEFFICIENT SLOPE FOR LIVER FROM REFLECTED ULTRASOUND SIGNALS
    KUC, R
    SCHWARTZ, M
    IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, 1979, 26 (05): : 353 - 362
  • [24] Potential benefits of incorporating energy information when estimating attenuation from PET data
    Brusaferri, Ludovica
    Bousse, Alexandre
    Efthimiou, Nikos
    Emond, Elise
    Atkinson, David
    Ourselin, Sebastien
    Hutton, Brian F.
    Arridge, Simon
    Thielemans, Kris
    2017 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), 2017,
  • [25] Correcting for bounded bandwidth when estimating tissue attenuation from mean frequency downshift
    Klimonda, Z.
    Litniewski, J.
    Nowicki, A.
    2012 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), 2012, : 1647 - 1650
  • [26] A New Methodology for the Assessment of Very Low Concentrations of Cells in Serous Body Fluids Based on the Count of Ultrasound Echoes Backscattered From Cells
    Elvira, Luis
    Ibanez Rodriguez, Alberto
    Fernandez, Alba
    Duran, Carmen
    Parrilla Romero, Montserrat
    Pose-Diez-de-la-Lastra, Alicia
    Bassat, Quique
    Jimenez, Javier
    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2021, 68 (05) : 1580 - 1592
  • [27] A fully automated algorithm for estimating attenuation length in 3D from projection data
    Yan, MXH
    Karp, JS
    1995 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD, VOLS 1-3, 1996, : 1407 - 1410
  • [28] Algebraic approximations of a polyhedron correlation function stemming from its chord-length distribution
    Ciccariello, Salvino
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2021, 77 : 75 - 80
  • [29] Phase retrieval from local correlation measurements with fixed shift length
    Melnyk, Oleh
    Filbir, Frank
    Krahmer, Felix
    2019 13TH INTERNATIONAL CONFERENCE ON SAMPLING THEORY AND APPLICATIONS (SAMPTA), 2019,
  • [30] Estimating the galaxy correlation length r0 from the number of galaxy pairs with similar redshifts
    Adelberger, KL
    ASTROPHYSICAL JOURNAL, 2005, 621 (02): : 574 - 581
12345