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Related Experiment Video

Updated: May 20, 2025

Author Spotlight: Integrating Ultrasound Imaging with Biochemical Markers for Thyroid Disease Diagnosis
05:41

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Four-Dimensional Dual-Energy Computed Tomography-Derived Parameters and Their Correlation with Thyroid Gland

Max H M C Scheepers1, Zaid J J Al-Difaie1, Nicole D Bouvy1,2

  • 1GROW Research Institute for Oncology and Reproduction, Maastricht University, 6229 ER Maastricht, The Netherlands.

Tomography (Ann Arbor, Mich.)
|March 26, 2025
PubMed
Summary

Dual-energy CT (DECT) iodine measurements and true non-contrast (TNC) thyroid densities correlate with thyroid function. Virtual non-contrast (VNC) images are unsuitable for assessing thyroid function via density.

Keywords:
computed tomography (CT)dual-energy CT (DECT)four-dimensional CT (4D-CT)head and neck imagingiodine concentrationthyroid function

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Area of Science:

  • Radiology and Imaging
  • Endocrinology
  • Medical Physics

Background:

  • Dual-energy computed tomography (DECT) enables iodine quantification, crucial for thyroid hormone synthesis.
  • DECT can generate virtual non-contrast (VNC) images, potentially reducing radiation exposure.
  • Assessing thyroid function non-invasively is vital for managing endocrine disorders.

Purpose of the Study:

  • To explore correlations between thyroid function (TSH, FT4) and DECT-derived iodine concentration.
  • To investigate the relationship between thyroid densities on true non-contrast (TNC) and VNC images with thyroid function.
  • To analyze differences in thyroid density (ΔHU) between contrast-enhanced and non-contrast phases in relation to thyroid function.

Main Methods:

  • 87 patients undergoing 4D-CT with single and dual-energy scans for hyperparathyroidism diagnosis.
  • Measurement of thyroid iodine concentration and densities across all scanning phases.
  • Correlation analysis of these measurements with thyroid function tests (TSH, FT4) and ΔHU.

Main Results:

  • Positive correlations observed between iodine concentration and TSH levels (R = 0.349–0.414).
  • Significant positive correlation found between TNC thyroid density and TSH (R = 0.436).
  • VNC thyroid densities showed no correlation with TSH or FT4; ΔHU negatively correlated with TSH (p = 0.002).

Conclusions:

  • DECT-derived iodine concentration and TNC thyroid density correlate with thyroid function, unlike VNC densities.
  • VNC images are not suitable for evaluating thyroid function based on density.
  • ΔHU correlations suggest a link between iodine uptake capacity and thyroid hormonal function, highlighting DECT's potential in head and neck imaging.