[Evaluation of PROPELLER MR imaging: preliminary experiences]

¹University of Tokyo Hospital.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica

|June 21, 2002

Abstract:

Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER) MR imaging (MRI) has a unique ability to correct motion artifacts and is expected to be useful in diffusion-weighted MRI. This article describes preliminary experiences with PROPELLER MRI. PROPELLER uses a radial scan variation of the fast spin-echo sequence and it shows much less spatial deterioration than the echo-planar imaging sequence. To determine the optimal parameters of this technique, we calculated the signal intensities of phantoms and brains in various settings. PROPELLER MR examinations were also performed in 66 patients for clinical use. PROPELLER MRI appears to be a promising and useful technique.

Insights

Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER) MRI effectively reduces motion artifacts, outperforming echo-planar imaging. This technique shows promise for diffusion-weighted MRI applications.

Area of Science:

Magnetic Resonance Imaging (MRI)
Medical Imaging Physics

Context:

Motion artifacts significantly degrade image quality in diffusion-weighted MRI.
Echo-planar imaging (EPI) is susceptible to spatial deterioration from motion.

Purpose:

To evaluate the preliminary clinical utility and optimal parameters of PROPELLER MRI.
To assess PROPELLER's performance in motion artifact correction compared to EPI.

Summary:

PROPELLER MRI, a radial scan variation of fast spin-echo, demonstrates reduced spatial deterioration.
Signal intensities in phantoms and brains were analyzed to optimize PROPELLER parameters.
Clinical examinations in 66 patients were conducted to assess PROPELLER's efficacy.

Impact:

PROPELLER MRI shows significant potential for improving diagnostic accuracy in motion-prone imaging scenarios.
This technique offers a promising alternative for motion-robust diffusion-weighted MRI acquisition.

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