Results 11 to 20 of about 54,563 (252)

Comparison of spin-echo echo-planar imaging magnetic resonance elastography with gradient-recalled echo magnetic resonance elastography and their correlation with transient elastography

Diagnostic and Interventional Radiology, 2022
PURPOSEThis study aimed to assess the agreement between liver stiffness (LS) values obtained by the gradient-recalled echo (GRE) magnetic resonance elastography (MRE) and spin-echo echo-planar imaging (SE-EPI) MRE with those of transient elastography (TE)
Jin Woo Yoon, Eun Sun Lee, Hyun Jeong Park, Sung Bin Park, Young Youn Cho, Stephan Kannengiesser, Joonho Hur   +6 more
doaj   +1 more source

Variable flip angle echo planar time-resolved imaging (vFA-EPTI) for fast high-resolution gradient echo myelin water imaging

NeuroImage, 2021
Myelin water imaging techniques based on multi-compartment relaxometry have been developed as an important tool to measure myelin concentration in vivo, but are limited by the long scan time of multi-contrast multi-echo acquisition.
Zijing Dong, Fuyixue Wang, Kwok-Shing Chan, Timothy G. Reese, Berkin Bilgic, José P. Marques, Kawin Setsompop   +6 more
doaj   +1 more source

Intensity-Corrected Dual-Echo Echo-Planar Imaging (DE-EPI) for Improved Pediatric Brain Diffusion Imaging. [PDF]

PLoS ONE, 2015
Here we investigate the utility of a dual-echo Echo-Planar Imaging (DE-EPI) Diffusion Weighted Imaging (DWI) approach to improve lesion conspicuity in pediatric imaging. This method delivers two 'echo images' for one diffusion-preparation period. We also
Kristen W Yeom, Matus Straka, Michael Iv, Michael E Moseley, Patrick D Barnes, Stefan Skare, Samantha J Holdsworth   +6 more
doaj   +1 more source

Referenceless interleaved echo‐planar imaging [PDF]

Magnetic Resonance in Medicine, 1999
Interleaved echo-planar imaging (EPI) is an ultrafast imaging technique important for applications that require high time resolution or short total acquisition times. Unfortunately, EPI is prone to significant ghosting artifacts, resulting primarily from system time delays that cause data matrix misregistration. In this work, it is shown mathematically
S B, Reeder, E, Atalar, A Z, Faranesh, E R, McVeigh   +3 more
openaire   +2 more sources

A high temporal/spatial resolution neuro-architecture study of rodent brain by wideband echo planar imaging

Scientific Reports, 2021
Latest simultaneous multi-slice (SMS) methods greatly benefit MR efficiency for recent studies using parallel imaging technique. However, these methods are limited by the requirement of array coils. The proposed Coherent Wideband method, which employs an
Po-Wei Cheng, Tzi-Dar Chiueh, Jyh-Horng Chen   +2 more
doaj   +1 more source

High-Resolution SAR Imaging with Azimuth Missing Data Based on Sub-Echo Segmentation and Reconstruction

Remote Sensing, 2023
Due to the substantial electromagnetic interference, radar interruptions, and other factors, the SAR system may fail to receive valid data in some azimuth areas. This phenomenon is known as Azimuth Missing Data (AMD).
Nan Jiang, Jiahua Zhu, Dong Feng, Zhuang Xie, Jian Wang, Xiaotao Huang   +5 more
doaj   +1 more source

Calgary Preschool magnetic resonance imaging (MRI) dataset

Data in Brief, 2020
The Calgary Preschool MRI Dataset in the Developmental Neuroimaging Lab at the University of Calgary uses magnetic resonance imaging (MRI) techniques to study brain structure and function in early childhood [1–3].
Jess E. Reynolds, Xiangyu Long, Dmitrii Paniukov, Mercedes Bagshawe, Catherine Lebel   +4 more
doaj   +1 more source

Comparison of Diagnostic Performance and Image Quality between Topup-Corrected and Standard Readout-Segmented Echo-Planar Diffusion-Weighted Imaging for Cholesteatoma Diagnostics

Diagnostics, 2023
This study compares the diagnostic performance and image quality of single-shot turbo spin-echo DWI (tseDWI), standard readout-segmented DWI (rsDWI), and a modified rsDWI version (topupDWI) for cholesteatoma diagnostics.
Marco Wiesmueller, Wolfgang Wuest, Angelika Mennecke, Matthias Stefan May, Rafael Heiss, Tobit Fuehres, Rolf Janka, Michael Uder, Arnd Doerfler, Frederik Bernd Laun   +9 more
doaj   +1 more source

fMRI protocol optimization for simultaneously studying small subcortical and cortical areas at 7 ​T

NeuroImage, 2020
Most fundamental cognitive processes rely on brain networks that include both cortical and subcortical structures. Studying such networks using functional magnetic resonance imaging (fMRI) requires a data acquisition protocol that provides blood ...
Steven Miletić, Pierre-Louis Bazin, Nikolaus Weiskopf, Wietske van der Zwaag, Birte U. Forstmann, Robert Trampel   +5 more
doaj   +1 more source

Boosting BOLD fMRI by K-space density weighted echo planar imaging. [PDF]

PLoS ONE, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Mario Zeller, Alexander Müller, Marcel Gutberlet, Thomas Nichols, Dietbert Hahn, Herbert Köstler, Andreas J Bartsch   +6 more
doaj   +1 more source