SSFP and GRE phase contrast imaging using a three-echo readout
نویسندگان
چکیده
منابع مشابه
SSFP and GRE phase contrast imaging using a three-echo readout.
A technique for rapid in-plane phase-contrast imaging with high signal-to-noise ratio (SNR) is described. Velocity-encoding is achieved by oscillating the readout gradient, such that each 2DFT phase-encode is acquired three times following a single RF slice-selective excitation. Three images are reconstructed, from which both flow velocity and local resonance offset are calculated. This techniq...
متن کاملA Robust Field-map Estimation Method Using Dual-echo GRE with Bipolar Readout Gradient Structure
D. Yeo, T. L. Chenevert, J. A. Fessler, B. Kim Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, United States, Radiology, University of Michigan Medical School, Ann Arbor, MI, United States Introduction: Field-maps are typically required to correct for field-inhomogeneity artifacts like geometric distortion in EPI and blurring in spiral acquisitions [1,2]. Wit...
متن کاملAccelerated three-dimensional cine phase contrast imaging using randomly undersampled echo planar imaging with compressed sensing reconstruction.
The aim of this study was to implement and evaluate an accelerated three-dimensional (3D) cine phase contrast MRI sequence by combining a randomly sampled 3D k-space acquisition sequence with an echo planar imaging (EPI) readout. An accelerated 3D cine phase contrast MRI sequence was implemented by combining EPI readout with randomly undersampled 3D k-space data suitable for compressed sensing ...
متن کاملSelective spectroscopic imaging of hyperpolarized pyruvate and its metabolites using a single-echo variable phase advance method in balanced SSFP.
PURPOSE In balanced steady state free precession (bSSFP), the signal intensity has a well-known dependence on the off-resonance frequency, or, equivalently, the phase advance between successive radiofrequency (RF) pulses. The signal profile can be used to resolve the contributions from the spectrally separated metabolites. This work describes a method based on use of a variable RF phase advance...
متن کاملFlow-independent subtractive non-contrast enhanced MRA using flow insensitive and sensitive SSFP-echo
Introduction: Computer tomographic angiography (CTA) is the gold standard for visualizing the arteries in patients with severe peripheral artery disease (PAD) that require revascularization. However, x-ray dye used in CTA should be avoided in patients with kidney diseases or severe diabetes, which is equally the case for gadolinium contrast agents. Further, CTA exposes patients to ionizing radi...
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: 2007
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.21276