Evidence map›Paper›PMID 17440244›Full record

ArticlePhysics in medicine and biology2007

Viscoelasticity imaging using ultrasound: parameters and error analysis.

M Sridhar, J Liu, M F Insana

Abstract read
In one paragraph

Article in Physics in medicine and biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–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

23 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Automated Compression Device for Viscoelasticity Imaging.IEEE transactions on bio-medical engineering · 2017
    Article
  12. Article
  13. Article
  14. Article
  15. Algorithms for quantitative quasi-static elasticity imaging using force data.International journal for numerical methods in biomedical engineering · 2014
    Article
  16. Article
  17. Article
  18. Article
  19. Fractional derivative models for ultrasonic characterization of polymer and breast tissue viscoelasticity.IEEE transactions on ultrasonics, ferroelectrics, and frequency control · 2009
    Article
  20. 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

3 authors.

M SridharDepartment of Biomedical Engineering, University of California, Davis, CA 95616, USA.
J Liu
M 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 R01 CA082497
6 · The paper itself

Abstract

Techniques are being developed to image viscoelastic features of soft tissues from time-varying strain. A compress-hold-release stress stimulus commonly used in creep-recovery measurements is applied to samples to form images of elastic strain and strain retardance times. While the intended application is diagnostic breast imaging, results in gelatin hydrogels are presented to demonstrate the techniques. The spatiotemporal behaviour of gelatin is described by linear viscoelastic theory formulated for polymeric solids. Measured creep responses of polymers are frequently modelled as sums of exponentials whose time constants describe the delay or retardation of the full strain response. We found the spectrum of retardation times tau to be continuous and bimodal, where the amplitude at each tau represents the relative number of molecular bonds with a given strength and conformation. Such spectra indicate that the molecular weight of the polymer fibres between bonding points is large. Imaging parameters are found by summarizing these complex spectral distributions at each location in the medium with a second-order Voigt rheological model. This simplification reduces the dimensionality of the data for selecting imaging parameters while preserving essential information on how the creeping deformation describes fluid flow and collagen matrix restructuring in the medium. The focus of this paper is on imaging parameter estimation from ultrasonic echo data, and how jitter from hand-held force applicators used for clinical applications propagate through the imaging chain to generate image noise.

Indexed as

Computer SimulationModels, TheoreticalPhantoms, ImagingUltrasonographyElasticityGelatinViscosityGelatin

Identifiers

PMID17440244
PMCPMC2713776

What OpenQuestion holds

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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.