Quiet PROPELLER MRI Techniques Match the Quality of Conventional PROPELLER Brain Imaging Techniques
نویسندگان
چکیده
منابع مشابه
Quiet PROPELLER MRI techniques match the quality of conventional PROPELLER brain imaging techniques.
BACKGROUND AND PURPOSE Switching of magnetic field gradients is the primary source of acoustic noise in MR imaging. Sound pressure levels can run as high as 120 dB, capable of producing physical discomfort and at least temporary hearing loss, mandating hearing protection. New technology has made quieter techniques feasible, which range from as low as 80 dB to nearly silent. The purpose of this ...
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 کاملMulti-shot Diffusion-Weighted PROPELLER MRI of the Abdomen
J. Deng, A. Stemmer, F. H. Miller, T. K. Rhee, R. Salem, D. Li, R. A. Omary, A. C. Larson Department of Radiology, Northwestern University, Chicago, IL, United States, Department of Biomedical Engineering, Northwestern University, Chicago, IL, United States, Siemens Medical Solutions, Erlangen, Germany Introduction: Diffusion-weighted imaging (DWI) techniques use water mobility as an exogenous ...
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° ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Neuroradiology
سال: 2015
ISSN: 0195-6108,1936-959X
DOI: 10.3174/ajnr.a4235