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High resolution MR eye protocol optimization: Comparison between 3D-CISS, 3D-PSIF and 3D-VIBE sequences.

Irene Tsiapa1, Miltiadis K Tsilimbaris2, Efrosini Papadaki3

  • 1Department of Medical Physics, University of Crete, Heraklion, Crete, Greece; Department of Ophthalmology, University Hospital of Crete, Heraklion, Crete, Greece; Institute for Nuclear and Radiological Sciences, Technology, Energy and Safety, National Center of Scientific Research "Demokritos", Aghia Paraskevi, Athens, Greece.

Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)
|April 15, 2015
PubMed
Summary

This study compared MRI sequences for eye imaging, finding 3D-CISS offers superior detail but suffers from artifacts. Optimized protocols enhance clinical MRI reliability for detailed ocular imaging.

Keywords:
High-resolution MRIMR eyeOcular tissuesOphthalmology

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Area of Science:

  • Ophthalmology
  • Radiology
  • Medical Imaging

Background:

  • Magnetic Resonance Imaging (MRI) is crucial for detailed anatomical visualization.
  • Optimizing MRI sequences is essential for improving diagnostic accuracy in ocular imaging.

Purpose of the Study:

  • To compare specific MRI pulse sequences for their effectiveness in depicting ocular anatomy.
  • To evaluate the utility of different MRI sequences in high-resolution eye imaging.

Main Methods:

  • Developed a High-Resolution (HR) MRI protocol on a 1.5-T system using 3D-PSIF, 3D-CISS, and 3D-VIBE sequences.
  • Calculated Signal-to-Noise Ratios (SNR) and Contrast-to-Noise Ratios (CNR) for various ocular regions.
  • Assessed image quality and artifacts subjectively.

Main Results:

  • 3D-PSIF and 3D-CISS sequences showed better eye delineation than 3D-VIBE.
  • 3D-CISS provided the highest SNR and tissue discrimination but had ghost artifacts in the anterior chamber.
  • Post-contrast T1w 3D-VIBE yielded the best overall image quality.

Conclusions:

  • An optimized comprehensive MR eye imaging protocol was achieved.
  • Improved SNR, spatial resolution, and reduced scan time enhance clinical MRI reliability for eye imaging.