منابع مشابه
Improved ASL Imaging with 3D GRASE PROPELLER
Introduction: Arterial Spin Labeling (ASL) uses blood water as an endogenous tracer to non-invasively measure cerebral blood flow. In a previous study, Günther et al. (1) has shown a near 3-fold improvement in perfusion signal-to-noise ratio (SNR) with single-shot 3D GRASE compared to conventional 2D EPI. However, a limitation of 3D GRASE is through-plane blurring caused by T2 decay. Reducing t...
متن کاملAnisotropic field-of-view shapes for improved PROPELLER imaging.
The Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction (PROPELLER) method for magnetic resonance imaging data acquisition and reconstruction has the highly desirable property of being able to correct for motion during the scan, making it especially useful for imaging pediatric or uncooperative patients and diffusion imaging. This method nominally supports a circular fi...
متن کاملFunctional magnetic resonance imaging using PROPELLER-EPI.
Periodically rotated overlapping parallel lines with enhanced reconstruction-echo-planar imaging (PROPELLER-EPI) is a multishot technique that samples k-space by acquisition of narrow blades, which are subsequently rotated until the entire k-space is filled. It has the unique advantage that the center of k-space, and thus the area containing the majority of functional MRI signal changes, is sam...
متن کامل3D PROPELLER-Based Diffusion Weighted Imaging
Introduction PROPELLER [1] and Turboprop DWI [2] have shown advantages over traditional EPI DWI which include higher resolution, relative insensitivity to motion and robustness to off-resonance. In this work, we propose a new sequence dubbed TURBINE (TURBoprop IN Elevation), which adapts the TurboProp scheme to 3D DWI imaging. The potential benefits of this approach over EPI and turboprop inclu...
متن کاملPROPELLER DUO: Applied to Diffusion-Weighted Imaging
Introduction: Fast Spin Echo (FSE) could suffer from the non-CPMG condition that results in destructive echo interference, unstable echo train and signal cancellation. Diffusion-weighted (DW) PROPELLER [1], an FSE-based sequence, mitigates the non-CPMG issue by XY phase cycling [1] combined with split-blade acquisition [2]. However, XY phase cycling requires refocus flip angle be close to 180° ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2006
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.20768