Quantitative Assessment of Thyroid, Submandibular, and Parotid Glands Elasticity With Shear-Wave Elastography in

Hatice Arioz Habibi1, Emine Sebnem Memis Durmaz1, Vusale Qarayeva1

  • 1Department of Radiology and.

Ultrasound Quarterly
|March 30, 2018
PubMed

Insights

Ultrasound elastography can assess tissue elasticity in children. This study establishes normal elasticity ranges for pediatric thyroid and salivary glands, showing elasticity increases with age.

Area of Science:

  • Pediatric imaging
  • Biomedical engineering
  • Medical diagnostics

Background:

  • Tissue elasticity is increasingly vital for evaluating inflammatory diseases.
  • Adolescence brings significant changes to thyroid and salivary glands.
  • Establishing age-specific elasticity ranges is crucial for pediatric ultrasound elastography.

Purpose of the Study:

  • To determine mean elasticity ranges for pediatric thyroid, submandibular, and parotid glands.
  • To investigate the correlation between age and gland elasticity in healthy children.
  • To provide baseline quantitative elasticity measures for future pediatric studies.

Main Methods:

  • Shear-wave elastography was used to evaluate the thyroid, submandibular, and parotid glands.
  • 127 healthy volunteers (ages 3-17 years) participated in the study.
  • Elasticity values were measured in kilopascals (kPa).

Main Results:

  • Mean elasticity values were 14.6 ± 3.3 kPa (thyroid), 11.8 ± 2.2 kPa (submandibular), and 11.8 ± 2.6 kPa (parotid).
  • A significant positive correlation was found between age and elasticity for all three glands.
  • Thyroid gland elasticity showed a significant age-dependent increase, independent of weight and height.

Conclusions:

  • This study provides essential baseline quantitative elasticity measures for pediatric thyroid and salivary glands.
  • Age is a significant factor influencing tissue elasticity in these glands during childhood and adolescence.
  • These findings support the wider application of ultrasound elastography in pediatric diagnostics.

Related Concept Videos

The Thyroid Gland01:23

The Thyroid Gland

The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
7.8K
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
525
Elasticity01:12

Elasticity

Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing deformation are removed. When an elastic material deforms under the action of an external force, it experiences internal resistance to the deformation. However, if no external force is applied, it returns to its original state.
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...
5.0K
The Wave Nature of Light02:12

The Wave Nature of Light

The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
61.6K
Shear Diagram01:27

Shear Diagram

In the study of beam mechanics, shear diagrams play a crucial role in understanding the distribution of shear forces along the length of a beam. Consider a beam AB that is supported at both ends and subjected to perpendicular loads.
First, a free-body diagram of the beam is drawn, representing all the external forces and internal reactions acting on the beam. One can calculate the reaction forces at each support by employing the equilibrium equations of force and moment. The vertical component...
1.7K
Shearing Stress01:19

Shearing Stress

Shearing stress, denoted by the Greek letter tau (τ), is stress caused by forces acting transversely on an object. These forces create internal ones within the entity in the plane where the external forces are applied. The resultant of these internal forces is the shear in the section.
The average shearing stress can be calculated by dividing the shear by the area of the cross-section.
2.0K