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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Visual assessment of cerebrospinal fluid flow dynamics using 3D T2-weighted SPACE sequence-based classification

İbrahim Feyyaz Naldemir1, Ahmet Kursat Karaman2, Hayri Ogul3

  • 1Department of Radiology, Duzce University Faculty of Medicine, Duzce, Turkey.

Acta Radiologica (Stockholm, Sweden : 1987)
|November 4, 2024
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Summary

T2-weighted 3D-SPACE MRI effectively visualizes cerebrospinal fluid (CSF) flow dynamics. Signal loss on this sequence correlates with quantitative CSF flow measurements, aiding in flow assessment.

Keywords:
3D-SPACEMagnetic resonance imagingcerebrospinal fluidhydrocephalussignal void

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Area of Science:

  • Neuroimaging
  • Medical Physics
  • Fluid Dynamics

Background:

  • Flow-related signal void artifacts are visible on T2-weighted (T2W) 3D-SPACE MRI.
  • These artifacts in the cerebral aqueduct and fourth ventricle offer insights into cerebrospinal fluid (CSF) flow dynamics.

Purpose of the Study:

  • To evaluate the T2W 3D-SPACE sequence's efficacy in assessing CSF flow.
  • Specifically focusing on the aqueduct and fourth ventricle.

Main Methods:

  • 137 patients underwent CSF flow studies.
  • T2W 3D-SPACE signal loss in the aqueduct and fourth ventricle was graded (0-3).
  • Correlation with quantitative phase-contrast MRI (PC-MRI) values was analyzed.

Main Results:

  • Significant differences in flow velocity and volume across grades at the aqueduct.
  • Grade 3 showed significantly higher CSF peak systolic flow velocity and mean flow volume.
  • Aqueduct area differed significantly between grade 0 and other grades.

Conclusions:

  • Signal loss on T2W 3D-SPACE in the fourth ventricle correlates with PC-MRI measured peak systolic velocity and flow volume.
  • T2W 3D-SPACE is a viable tool for qualitative CSF flow assessment.