Results 31 to 40 of about 4,917,448 (190)

Investigating the effect of flow compensation and quantitative susceptibility mapping method on the accuracy of venous susceptibility measurement

NeuroImage, 2021
Quantitative susceptibility mapping (QSM) is a promising non-invasive method for obtaining information relating to oxygen metabolism. However, the optimal acquisition sequence and QSM reconstruction method for reliable venous susceptibility measurements ...
Ronja C. Berg, Christine Preibisch, David L. Thomas, Karin Shmueli, Emma Biondetti   +4 more
doaj   +1 more source

Comparison of quantitative susceptibility mapping methods for iron-sensitive susceptibility imaging at 7T: An evaluation in healthy subjects and patients with Huntington's disease

NeuroImage, 2023
Quantitative susceptibility mapping (QSM) is a promising tool for investigating iron dysregulation in neurodegenerative diseases, including Huntington's disease (HD). Many diverse methods have been proposed to generate accurate and robust QSM images.
Jingwen Yao, Melanie A. Morrison, Angela Jakary, Sivakami Avadiappan, Yicheng Chen, Johanna Luitjens, Julia Glueck, Theresa Driscoll, Michael D. Geschwind, Alexandra B. Nelson, Javier E. Villanueva-Meyer, Christopher P. Hess, Janine M. Lupo   +12 more
doaj   +1 more source

Detecting early brain susceptibility changes before demyelination in cuprizone mouse model using quantitative susceptibility mapping (QSM). [PDF]

Neuroimage
Multiple sclerosis (MS) is a neurological disease that affects the central nervous system through demyelination and inflammation. Animal model, including the cuprizone (CPZ) model, provides a robust platform for studying demyelination and remyelination in MS. While conventional MRI techniques are sensitive to myelin changes, quantitative susceptibility
Han X, Chen J, Liu Z, Liu J, Lin M, Wang N.   +5 more
europepmc   +4 more sources

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

A Generalized Approach to Solving Deep Learning-Based Quantitative Susceptibility Mapping and Quantitative Blood Oxygen Level Dependent Magnitude (QSM + qBOLD or QQ) for Oxygen Extraction Fraction (OEF) Mapping Across Diverse Acquisition Schemes. [PDF]

Magn Reson Med
ABSTRACT Purpose QQ, a recently proposed oxygen extraction fraction (OEF) mapping technique combining quantitative susceptibility mapping (QSM) and quantitative blood oxygen level‐dependent (qBOLD) (QSM + qBOLD = QQ), generates OEF maps noninvasively from a single routine MRI sequence, without requiring vascular challenges used in other OEF approaches.
Qiu T, Ally A, Misra A, Chiang GC, Nguyen TD, Gauthier SA, Zhang S, Wang Y, Cho J.   +8 more
europepmc   +2 more sources

Introduction to quantitative susceptibility mapping and susceptibility weighted imaging. [PDF]

, 2019
Quantitative Susceptibility Mapping (QSM) and Susceptibility Weighted Imaging (SWI) are magnetic resonance imaging techniques that measure and display differences in the magnetisation that is induced in tissues, i.e.

core   +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

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 (QSM) is Sensitive to Hippocampal and Subcortical Gray Matter Changes in Temporal Lobe Epilepsy [PDF]

, 2021
Although temporal lobe epilepsy (TLE) results in widespread changes in MRI measures of tissue volume, diffusion and functional connectivity, changes in tissue composition in TLE have not been investigated with MRI.
Buck, S, Caciagli, L, Shmueli, K, Kiersnowski, OC, Biondetti, E, Vos, SB, Duncan, J, Winston, GP   +7 more
core   +1 more source