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Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

Published on: January 7, 2021

A versatile flow phantom for intravoxel incoherent motion MRI

Gene Y Cho1, Sungheon Kim, Jens H Jensen

  • 1Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, New York 10016-3295, USA. gyc219@nyumc.org

Magnetic Resonance in Medicine
|November 25, 2011
PubMed

Insights

This study developed a novel flow phantom to test intravoxel incoherent motion (IVIM) MRI. The technique successfully quantified microvascular properties, offering a promising tool for tumor microenvironment research.

Area of Science:

  • Medical Imaging
  • Biophysics
  • Oncology

Background:

  • The tumor microenvironment's complexity remains a challenge in cancer research.
  • Diffusion-weighted MRI is a valuable tool for probing tissue microstructure.
  • Intravoxel incoherent motion (IVIM) MRI shows promise for assessing the vascular microenvironment.

Purpose of the Study:

  • To develop and validate a flow phantom for testing IVIM-sensitive MRI sequences.
  • To optimize IVIM-MRI techniques for characterizing tumor microvascular properties.
  • To assess the potential of IVIM-MRI in clinical applications for cancer research.

Main Methods:

  • Construction of a complex flow phantom simulating tumor microenvironment characteristics.
  • Application of IVIM-sensitive diffusion-weighted MRI sequences on a clinical scanner.
  • Biexponential fitting of signal decay curves to extract quantitative parameters.

Main Results:

  • The flow phantom confirmed IVIM's sensitivity to microscopic flow effects.
  • Quantitative parameters including perfusion fraction, pseudodiffusivity, and diffusivity were successfully extracted.
  • Parametric maps demonstrated the potential clinical utility of IVIM-sensitive imaging.

Conclusions:

  • The developed flow phantom is an effective tool for validating and optimizing IVIM-MRI.
  • IVIM-MRI can provide quantitative surrogate markers for microvascular properties.
  • This technique holds potential for advancing the understanding and treatment of the tumor microenvironment.

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