Results 31 to 40 of about 4,607 (203)

Joint estimation of chemical shift and quantitative susceptibility mapping (chemical QSM) [PDF]

Magnetic Resonance in Medicine, 2014
PurposeThe purpose of this work is to address the unsolved problem of quantitative susceptibility mapping (QSM) of tissue with fat where both fat and susceptibility change the MR signal phase.Theory and MethodsThe chemical shift of fat was treated as an additional unknown and was estimated jointly with susceptibility to provide the best data fitting ...
Alexey V, Dimov, Tian, Liu, Pascal, Spincemaille, Jacob S, Ecanow, Huan, Tan, Robert R, Edelman, Yi, Wang   +6 more
openaire   +2 more sources

Quantitative Susceptibility Mapping: Translating an Investigative Research Tool into High Volume Clinical Diagnostic Imaging

Diagnostics, 2022
Quantitative susceptibility mapping (QSM) is an MRI-based technique for iron quantification of targeted tissue. QSM provides information relevant to clinicians in a broad range of diagnostic contexts, including sickle cell disease, inflammatory ...
Matthew T. Borzage, Eamon K. Doyle, Chia-Shang J. Liu, Marvin D. Nelson, Stefan Blüml, John C. Wood, Benita Tamrazi   +6 more
doaj   +1 more source

Quantitative mapping of cerebral metabolic rate of oxygen (CMRO₂) using quantitative susceptibility mapping (QSM) [PDF]

Magnetic Resonance in Medicine, 2014
PurposeTo quantitatively map cerebral metabolic rate of oxygen ( ) and oxygen extraction fraction ( ) in human brains using quantitative susceptibility mapping (QSM) and arterial spin labeling‐measured cerebral blood flow (CBF) before and after caffeine vasoconstriction.MethodsUsing the multiecho, three‐dimensional gradient echo sequence and an oral ...
Jingwei, Zhang, Tian, Liu, Ajay, Gupta, Pascal, Spincemaille, Thanh D, Nguyen, Yi, Wang   +5 more
openaire   +2 more sources

Quantitative Susceptibility Mapping-Based Microscopy of Magnetic Resonance Venography (QSM-mMRV) for In Vivo Morphologically and Functionally Assessing Cerebromicrovasculature in Rat Stroke Model.

PLoS ONE, 2016
Abnormal cerebral oxygenation and vessel structure is a crucial feature of stroke. An imaging method with structural and functional information is necessary for diagnosis of stroke.
Meng-Chi Hsieh, Ching-Yi Tsai, Min-Chiao Liao, Jenq-Lin Yang, Chia-Hao Su, Jyh-Horng Chen   +5 more
doaj   +1 more source

Accelerated mapping of magnetic susceptibility using 3D planes-on-a-paddlewheel (POP) EPI at ultra-high field strength [PDF]

, 2016
With the advent of ultra-high field MRI scanners in clinical research, susceptibility based MRI has recently gained increasing interest because of its potential to assess subtle tissue changes underlying neurological pathologies/disorders.
Barth, Markus, Bollmann, Steffen, Bredies, Kristian, Langkammer, Christian, Stäb, Daniel   +4 more
core   +1 more source

Coil combination using linear deconvolution in k-space for phase imaging [PDF]

, 2019
Background: The combination of multi-channel data is a critical step for the imaging of phase and susceptibility contrast in magnetic resonance imaging (MRI).
Cui, X, He, T, Nan, J, Xiong, L, Xu, L, Zheng, Q   +5 more
core   +1 more source

Quantitative susceptibility mapping (QSM): Decoding MRI data for a tissue magnetic biomarker [PDF]

Magnetic Resonance in Medicine, 2014
In MRI, the main magnetic field polarizes the electron cloud of a molecule, generating a chemical shift for observer protons within the molecule and a magnetic susceptibility inhomogeneity field for observer protons outside the molecule. The number of water protons surrounding a molecule for detecting its magnetic susceptibility is vastly greater than ...
Wang, Yi, Liu, Tian
openaire   +2 more sources

Fast quantitative susceptibility mapping with L1-regularization and automatic parameter selection [PDF]

, 2013
Purpose To enable fast reconstruction of quantitative susceptibility maps with total variation penalty and automatic regularization parameter selection.
Bianciardi, Bilgic, Chen, Deistung, Duyn, Fan, Goldstein, Haacke, Hammond, Hansen, Langkammer, Langkammer, Li, Liu, Liu, Liu, Liu, Marques, Morozov, Robinson, Rochefort, Schweser, Schweser, Schweser, Shmueli, Smith, Sun, Wharton, Wu, Wu, Xia, Xia, Zheng   +32 more
core   +1 more source

Evaluation of iron deposition in brain basal ganglia of patients with Parkinson's disease using quantitative susceptibility mapping

European Journal of Radiology Open, 2019
Aim of the study: Parkinson's disease is associated with iron deposition in the brain. The QSM (quantitative susceptibility mapping) is more sensitive than T2-weighted imaging, T2* and R2.
Vahid Shahmaei, Fariborz Faeghi, Ahmad Mohammadbeigi, Hasan Hashemi, Farzad Ashrafi   +4 more
doaj   +1 more source

Quantitative Susceptibility Mapping by Inversion of a Perturbation Field Model: Correlation With Brain Iron in Normal Aging [PDF]

, 2014
There is increasing evidence that iron deposition occurs in specific regions of the brain in normal aging and neurodegenerative disorders such as Parkinson's, Huntington's, and Alzheimer's disease.
Adalsteinsson, Elfar, Jenkinson, Mark, Pfefferbaum, Adolf, Poynton, Clare B., Sullivan, Edith V., Wells, William M.   +5 more
core   +1 more source