Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Statistical uncertainty in ultrasonic backscatter and attenuation coefficients determined with a reference phantom.

L X Yao1, J A Zagzebski, E L Madsen

  • 1Department of Medical Physics, University of Wisconsin, Madison 53706.

Ultrasound in Medicine & Biology
|January 1, 1991
PubMed
Summary

This study estimates uncertainties in ultrasound attenuation and backscatter coefficients. Results show errors depend on depth range and data points, validated with phantom experiments.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Clinical comparison of modified laparoscopic and conventional placement of peritoneal dialysis catheters].

Zhonghua yi xue za zhi·2016
Same author

Contrasts between subsurface microbial communities and their metabolic adaptation to polycyclic aromatic hydrocarbons at a forested and an urban coal-tar disposal site.

Microbial ecology·2013
Same author

EHPC 2010: sharing knowledge on environmental health for risk mitigation.

Ecotoxicology (London, England)·2011
Same author

Investigating the biodegradability of perfluorooctanoic acid.

Chemosphere·2010
Same author

Instrument for determining the complex shear modulus of soft-tissue-like materials from 10 to 300 Hz.

Physics in medicine and biology·2008
Same author

Ultrasound frame rate requirements for cardiac elastography: experimental and in vivo results.

Ultrasonics·2008

Area of Science:

  • Ultrasound physics
  • Biomedical acoustics
  • Medical imaging

Background:

  • Accurate estimation of ultrasound attenuation and backscatter coefficients is crucial for quantitative medical imaging.
  • Statistical fluctuations in echo signals introduce uncertainties in these estimations.
  • Transducer and instrumentation factors can further impact measurement accuracy.

Purpose of the Study:

  • To estimate uncertainties in measured ultrasound attenuation and backscatter coefficients.
  • To analyze the impact of statistical fluctuations and measurement conditions on these uncertainties.
  • To validate the predicted uncertainties using experimental data.

Main Methods:

  • Statistical analysis of echo signal data from randomly scattering media.

Related Experiment Videos

  • Utilizing a reference phantom to correct for transducer and instrumentation effects.
  • Calculating uncertainties for attenuation and backscatter coefficients based on depth range and data point variations.
  • Experimental validation using tissue-mimicking phantoms.

    • Main Results:

    • Attenuation uncertainty is inversely proportional to the 3/2 power of the depth range.
    • Backscatter coefficient error has components from local data fluctuations (inversely proportional to the square root of independent data points) and depth-dependent attenuation uncertainty.
    • Experimental standard deviations aligned with predicted error estimations.

    Conclusions:

    • The study provides a framework for quantifying uncertainties in ultrasound attenuation and backscatter coefficient measurements.
    • Understanding these uncertainties is vital for reliable quantitative ultrasound imaging.
    • The findings support the use of reference phantoms and statistical analysis for accurate ultrasound parameter estimation.