Rotated stack-of-spirals partial acquisition for rapid volumetric parallel MRI
نویسندگان
چکیده
منابع مشابه
Stack-of-Spirals CAIPIRINHA Trajectory for Rapid Volumetric Imaging
Target Audience: MRI physicists and engineers. Purpose: The stack-of-spirals trajectory has been shown to be a very time efficient method to traverse a volumetric k-space for high-resolution imaging (1). Rapid volumetric imaging is useful for high-resolution fMRI at high magnetic fields (2). The long scan times needed for high resolutions however can compromise the temporal resolution of the BO...
متن کاملThree-dimensional first-pass myocardial perfusion MRI using a stack-of-spirals acquisition.
Three-dimensional cardiac magnetic resonance perfusion imaging is promising for the precise sizing of defects and for providing high perfusion contrast, but remains an experimental approach primarily due to the need for large-dimensional encoding, which, for traditional 3DFT imaging, requires either impractical acceleration factors or sacrifices in spatial resolution. We demonstrated the feasib...
متن کاملWhole-brain background-suppressed pCASL MRI with 1D-accelerated 3D RARE Stack-Of-Spirals readout
Arterial Spin Labeled (ASL) perfusion MRI enables non-invasive, quantitative measurements of tissue perfusion, and has a broad range of applications including brain functional imaging. However, ASL suffers from low signal-to-noise ratio (SNR), limiting image resolution. Acquisitions using 3D readouts are optimal for background-suppression of static signals, but can be SAR intensive and typicall...
متن کاملFunctional MRI using regularized parallel imaging acquisition.
Parallel MRI techniques reconstruct full-FOV images from undersampled k-space data by using the uncorrelated information from RF array coil elements. One disadvantage of parallel MRI is that the image signal-to-noise ratio (SNR) is degraded because of the reduced data samples and the spatially correlated nature of multiple RF receivers. Regularization has been proposed to mitigate the SNR loss ...
متن کاملVolumetric HIFU ablation under 3D guidance of rapid MRI thermometry.
A volumetric sonication method is proposed that produces volume ablations by steering the focal point along a predetermined trajectory consisting of multiple concentric outward-moving circles. This method was tested in vivo on pig thigh muscle (32 ablations in nine animals). Trajectory diameters were 4, 12, and 16 mm with sonication duration depending on the trajectory size and ranging from 20 ...
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: Magnetic Resonance in Medicine
سال: 2015
ISSN: 0740-3194
DOI: 10.1002/mrm.25863