3D interslab echo-shifted FLASH sequence for susceptibility weighted imaging

2015 ◽  
Vol 76 (1) ◽  
pp. 222-228 ◽  
Author(s):  
Ya-Jun Ma ◽  
Wentao Liu ◽  
Xuna Zhao ◽  
Weinan Tang ◽  
Huanjie Li ◽  
...  
Keyword(s):  
Susceptibility Weighted Imaging ◽  
Flash Sequence

scholarly journals Juxtacortical susceptibility changes in progressive multifocal leukoencephalopathy at the gray–white matter junction correlates with iron-enriched macrophages

2021 ◽  
pp. 135245852199965
Author(s):  
Kedar R Mahajan ◽  
Moein Amin ◽  
Matthew Poturalski ◽  
Jonathan Lee ◽  
Danielle Herman ◽  
...  
Keyword(s):  
White Matter ◽  
Progressive Multifocal Leukoencephalopathy ◽  
Central Nervous System Lymphoma ◽  
Susceptibility Weighted Imaging ◽  
Resonance Imaging ◽  
Gradient Echo ◽  
Total N ◽  
Mri Brain ◽  
Fluid Attenuated Inversion Recovery ◽  
Magnetic Resonance Imaging Mri

Objective: Describe magnetic resonance imaging (MRI) susceptibility changes in progressive multifocal leukoencephalopathy (PML) and identify neuropathological correlates. Methods: PML cases and matched controls with primary central nervous system lymphoma (PCNSL) were retrospectively identified. MRI brain at 3 T and 7 T were reviewed. MRI-pathology correlations in fixed brain autopsy tissue were conducted in three subjects with confirmed PML. Results: With PML ( n = 26 total, n = 5 multiple sclerosis natalizumab-associated), juxtacortical changes on susceptibility-weighted imaging (SWI) or gradient echo (GRE) sequences were noted in 3/3 cases on 7 T MRI and 14/22 cases (63.6%) on 1.5 T or 8/22 (36.4%) 3 T MRI. Similar findings were only noted in 3/25 (12.0%) of PCNSL patients (odds ratio (OR) 12.83, 95% confidence interval (CI), 2.9–56.7, p < 0.001) on 1.5 or 3 T MRI. On susceptibility sequences available prior to diagnosis of PML, 7 (87.5%) had changes present on average 2.7 ± 1.8 months (mean ± SD) prior to diagnosis. Postmortem 7 T MRI showed SWI changes corresponded to areas of increased iron density along the gray–white matter (GM-WM) junction predominantly in macrophages. Conclusion: Susceptibility changes in PML along the GM-WM junction can precede noticeable fluid-attenuated inversion recovery (FLAIR) changes and correlates with iron accumulation in macrophages.

scholarly journals Factors associated with prominent vessel sign on susceptibility-weighted imaging in acute ischemic stroke

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hai-fei Jiang ◽  
Yi-qun Zhang ◽  
Jiang-xia Pang ◽  
Pei-ning Shao ◽  
Han-cheng Qiu ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Large Vessel ◽  
Susceptibility Weighted Imaging ◽  
Regression Analyses ◽  
Large Vessel Occlusion ◽  
Stroke Patients ◽  
Anterior Circulation ◽  
Vessel Occlusion ◽  
Factors Associated ◽  
Univariate Analyses

AbstractThe prominent vessel sign (PVS) on susceptibility-weighted imaging (SWI) is not displayed in all cases of acute ischemia. We aimed to investigate the factors associated with the presence of PVS in stroke patients. Consecutive ischemic stroke patients admitted within 24 h from symptom onset underwent emergency multimodal MRI at admission. Associated factors for the presence of PVS were analyzed using univariate analyses and multivariable logistic regression analyses. A total of 218 patients were enrolled. The occurrence rate of PVS was 55.5%. Univariate analyses showed significant differences between PVS-positive group and PVS-negative group in age, history of coronary heart disease, baseline NIHSS scores, total cholesterol, hemoglobin, anterior circulation infarct, large vessel occlusion, and cardioembolism. Multivariable logistic regression analyses revealed that the independent factors associated with PVS were anterior circulation infarct (odds ratio [OR] 13.7; 95% confidence interval [CI] 3.5–53.3), large vessel occlusion (OR 123.3; 95% CI 33.7–451.5), and cardioembolism (OR 5.6; 95% CI 2.1–15.3). Anterior circulation infarct, large vessel occlusion, and cardioembolism are independently associated with the presence of PVS on SWI.

scholarly journals Susceptibility-weighted imaging reveals cerebral microvascular injury in severe COVID-19

2021 ◽  
Vol 421 ◽  
pp. 117308
Author(s):  
John Conklin ◽  
Matthew P. Frosch ◽  
Shibani S. Mukerji ◽  
Otto Rapalino ◽  
Mary D. Maher ◽  
...  
Keyword(s):  
Susceptibility Weighted Imaging ◽  
Microvascular Injury

scholarly journals Motion‐insensitive susceptibility weighted imaging

2021 ◽  
Author(s):  
Johan Berglund ◽  
Tim Sprenger ◽  
Adam Niekerk ◽  
Henric Rydén ◽  
Enrico Avventi ◽  
...  
Keyword(s):  
Susceptibility Weighted Imaging

scholarly journals Attenuation of Cerebral Venous Contrast in Susceptibility-Weighted Imaging of Spontaneously Breathing Pediatric Patients Sedated with Propofol

2010 ◽  
Vol 31 (5) ◽  
pp. 901-906 ◽  
Author(s):  
J. Sedlacik ◽  
U. Löbel ◽  
M. Kocak ◽  
R.B. Loeffler ◽  
J.R. Reichenbach ◽  
...  
Keyword(s):  
Pediatric Patients ◽  
Susceptibility Weighted Imaging ◽  
Spontaneously Breathing
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