Evidence map›Paper›PMID 18196803›Full record

ArticleMedical physics2007

Ultrasonic measurements of breast viscoelasticity.

Mallika Sridhar, Michael F Insana

Abstract read
In one paragraph

Article in Medical physics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Wave-based optical coherence elastography: The 10-year perspective.Progress in biomedical engineering (Bristol, England) · 2022
    Article
  4. Modeling Uncertainty of Strain Ratio Measurements in Ultrasound Breast Strain Elastography: A Factorial Experiment.IEEE transactions on ultrasonics, ferroelectrics, and frequency control · 2020
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Acoustic Radiation Force-Induced Creep-Recovery (ARFICR): A Noninvasive Method to Characterize Tissue Viscoelasticity.IEEE transactions on ultrasonics, ferroelectrics, and frequency control · 2018
    Article
  10. Automated Compression Device for Viscoelasticity Imaging.IEEE transactions on bio-medical engineering · 2017
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Quasi-Static Ultrasound Elastography.Ultrasound clinics · 2009
    Article
  20. Material properties from acoustic radiation force step response.The Journal of the Acoustical Society of America · 2009
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Mallika SridharDepartment of Biomedical Engineering, University of California, One Shields Avenue, Davis, California 95616, USA.
Michael F Insana

Funding

ULTRASONIC ELASTICITY IMAGING OF THE BREASTR01CA082497 · NCI · UNIVERSITY OF KANSAS MEDICAL CENTER · PI INSANA, MICHAEL F · 1999 to 2008
$2.9M
NCI NIH HHS CA082497NCI NIH HHS R01 CA082497
6 · The paper itself

Abstract

In vivo measurements of the viscoelastic properties of breast tissue are described. Ultrasonic echo frames were recorded from volunteers at 5 fps while applying a uniaxial compressive force (1-20 N) within a 1 s ramp time and holding the force constant for up to 200 s. A time series of strain images was formed from the echo data, spatially averaged viscous creep curves were computed, and viscoelastic strain parameters were estimated by fitting creep curves to a second-order Voigt model. The useful strain bandwidth from this quasi-static ramp stimulus was 10(-2) < or = omega < or = 10(0) rad/s (0.0016-0.16 Hz). The stress-strain curves for normal glandular tissues are linear when the surface force applied is between 2 and 5 N. In this range, the creep response was characteristic of biphasic viscoelastic polymers, settling to a constant strain (arrheodictic) after 100 s. The average model-based retardance time constants for the viscoelastic response were 3.2 +/- 0.8 and 42.0 +/- 28 s. Also, the viscoelastic strain amplitude was approximately equal to that of the elastic strain. Above 5 N of applied force, however, the response of glandular tissue became increasingly nonlinear and rheodictic, i.e., tissue creep never reached a plateau. Contrasting in vivo breast measurements with those in gelatin hydrogels, preliminary ideas regarding the mechanisms for viscoelastic contrast are emerging.

Indexed as

Ultrasonography, MammaryAdipose TissueBreastElasticityElasticity Imaging TechniquesFemaleHumansLinear ModelsStromal CellsTime Factors

Identifiers

PMID18196803
PMCPMC2707145

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.