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An analysis of reconstruction noise from undersampled 4D flow MRI
(ELSEVIER SCI LTD, 2023)
Novel Magnetic Resonance (MR) imaging modalities can quantify hemodynamics but require long acquisition times, precluding its widespread use for early diagnosis of cardiovascular disease. To reduce acquisition times, flow ...
Velocity Variability in MRI Phase-Contrast
(IEEE, 2018)
MRI phase contrast is a well known technique for computing the average velocity associated to each pixel. In this work, we calculate the exact probability distribution function for the velocity given the noise in the signal. ...
Frequency Domain Connectivity Identification: An Application of Partial Directed Coherence in fMRI
(WILEY-LISS, 2009)
Functional magnetic resonance imaging (fMRI) has become an important tool in Neuroscience due to its noninvasive and high spatial resolution properties compared to other methods like PET or EEG. Characterization of the ...
Brain Tumor Segmentation and Identification Using Particle Imperialist Deep Convolutional Neural Network in MRI Images
For the past few years, segmentation for medical applications using Magnetic Resonance (MR) images is concentrated. Segmentation of Brain tumors using MRIpaves an effective platform to plan the treatment and diagnosis of ...
The Neuroanatomical Organization of Intrinsic Brain Activity Measured by fMRI in the Human Visual CortexThe neuroanatomical organizatión of intrinsic brain activity measured by fmri in the human visual cortex
(2018)
The existence of intrinsic neuronal activity has been demonstrated at many scales using a variety of methodological approaches, yet its biological relevance is only beginning to be understood. One way to study intrinsic ...
Mutual information identifies spurious Hurst phenomena in resting state EEG and fMRI data
(American Physical Society, 2018-02)
Long-range memory in time series is often quantified by the Hurst exponent H, a measure of the signal's variance across several time scales. We analyze neurophysiological time series from electroencephalography (EEG) and ...
In vivo assessment of endothelial permeability of coronary lesions with variable degree of stenosis using an albumin-binding MR probe
(Springer Science and Business Media B.V., 2021)
© 2021, The Author(s).MR imaging with an albumin-binding probe enables the visualization of endothelial permeability and damage in the arterial system. The goal of this study was to compare signal enhancement of lesions ...
Local Texture Descriptors for the Assessment of Differences in Diffusion Magnetic Resonance Imaging of the Brain
(Springer, 2016-11)
Purpose: Descriptors extracted from magnetic resonance imaging (MRI)of the brain can be employed to locate and characterize a wide range of pathologies. Scalar measures are typically derived within a single voxel unit, but ...