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Perfusion and vascular permeability: basic concepts and measurement in DCE-CT and DCE-MRI.

C A Cuenod1, D Balvay

  • 1Department of Radiology, Hôpital Européen Georges-Pompidou, Paris Descartes University, 20, rue Leblanc, 75015 Paris, France; Imaging Research Laboratory (LRI), INSERM U970 HEGP Parcc (Paris-Centre de recherche Cardiovasculaire), 75015 Paris, France.

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PubMed
Summary

Dynamic contrast-enhanced imaging (DCE-imaging) and dynamic susceptibility contrast-MRI (DSC-MRI) analyze microcirculation changes. These imaging biomarkers aid in diagnosing lesions and optimizing treatment by studying contrast agent kinetics.

Keywords:
AngiogenesisCapillary permeabilityDCE-CTDCE-MRIPerfusion

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Area of Science:

  • Biomedical Imaging
  • Physiology
  • Medical Diagnostics

Background:

  • The microvascular network is crucial for tissue function, providing exchange surfaces.
  • Pathological conditions alter microcirculation, offering potential imaging biomarkers.
  • Contrast agent kinetics analysis is a primary method for studying microcirculation.

Purpose of the Study:

  • To review imaging techniques for microcirculation analysis.
  • To discuss the application of contrast agent kinetics in medical imaging.
  • To highlight the factors influencing the results of microcirculation imaging.

Main Methods:

  • Utilizes dynamic contrast-enhanced imaging (DCE-imaging) and dynamic susceptibility contrast-MRI (DSC-MRI).
  • Involves intravenous injection of contrast agents during dynamic image acquisition.
  • Analysis includes visual assessment and mathematical modeling for parameter extraction.

Main Results:

  • Contrast agent kinetics can be analyzed qualitatively or quantitatively.
  • Results are influenced by acquisition parameters, contrast agent type, and data analysis methods.
  • Understanding physiological processes is key to interpreting results.

Conclusions:

  • Microcirculation imaging using contrast agents is vital for diagnostics and treatment.
  • Multiple factors affect imaging outcomes, necessitating careful consideration.
  • A thorough understanding of underlying physiology and imaging techniques is essential for effective application.