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MR imaging, flow and motion.

F Ståhlberg1, A Ericsson, B Nordell

  • 1Department of Diagnostic Radiology, University Hospital, Lund, Sweden.

Acta Radiologica (Stockholm, Sweden : 1987)
|May 1, 1992
PubMed
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This review explores how fluid flow and motion impact nuclear magnetic resonance (MR) imaging. It covers MR flow measurement techniques, models, signal influences, and clinical applications of MR flow imaging.

Area of Science:

  • Medical Imaging
  • Physics

Background:

  • Nuclear Magnetic Resonance (MR) imaging is a powerful diagnostic tool.
  • Understanding the influence of fluid flow and motion is crucial for accurate MR image interpretation.

Purpose of the Study:

  • To provide a nonmathematical review of the role of flow and motion in MR imaging.
  • To discuss the theory behind motion's influence on MR signals and define associated effects.
  • To survey quantitative flow measurement techniques and MR angiography.

Main Methods:

  • Historical review of MR flow measurement techniques.
  • Overview of in vitro and in vivo flow models.
  • Discussion of the theory of motion's influence on MR signal modulus and phase.
  • Survey of quantitative flow measurement methods like phase mapping.

Related Experiment Videos

  • Review of diffusion and microcirculation measurements.

    • Main Results:

    • Defined effects of motion on MR signals, including washin/washout, signal void, phase offset, and phase dispersion.
    • Presented a basic concept of MR angiography.
    • Surveyed quantitative flow measurement techniques and their applications.
    • Highlighted the role of MR flow imaging in current and future clinical settings.

    Conclusions:

    • Fluid flow and motion significantly affect MR imaging signals and image interpretation.
    • Various techniques exist for measuring and quantifying flow in MR imaging.
    • MR flow imaging holds substantial promise for present and future clinical applications.