scholarly journals Isolated Mammillary Bodies Damage—An Atypical Presentation of Wernicke Syndrome

2018 ◽  
Vol 8 (11) ◽  
pp. 104
Author(s):  
Samar Abbas ◽  
Halim Abboud ◽  
Moussa Chalah ◽  
Chadi Sabbagh ◽  
Samar Ayache
Keyword(s):  
Anterograde Amnesia ◽  
Complete Recovery ◽  
Resonance Imaging ◽  
Wernicke Encephalopathy ◽  
Mammillary Bodies ◽  
Fluid Attenuated Inversion Recovery ◽  
Partial Colectomy ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri ◽  
T2 Mri

We report atypical magnetic resonance imaging (MRI) lesions in a case of Wernicke encephalopathy. The patient presented with isolated anterograde amnesia following a partial colectomy complicated by peritonitis. Fluid-attenuated inversion recovery and T2 MRI sequences were normal. However, bilateral contrast enhancement of mammillary bodies was shown on T1 gadolinium-enhanced sequences. Blood tests revealed thiamine deficiency. The diagnosis of Wernicke encephalopathy was made and thiamine supplementation was given, resulting in complete recovery of the memory functions.

Three-dimensional MRI sequences in MS diagnosis and research

2019 ◽  
Vol 25 (13) ◽  
pp. 1700-1709
Author(s):  
Xun Yang Hu ◽  
Luckshi Rajendran ◽  
Emmanuelle Lapointe ◽  
Roger Tam ◽  
David Li ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Inversion Recovery ◽  
Susceptibility Weighted Imaging ◽  
Resonance Imaging ◽  
Phase Sensitive Inversion Recovery ◽  
3D Mri ◽  
Fluid Attenuated Inversion Recovery ◽  
Mri Sequences ◽  
Phase Sensitive ◽  
Magnetic Resonance Imaging Mri

The most recent guidelines for magnetic resonance imaging (MRI) in multiple sclerosis (MS) recommend three-dimensional (3D) MRI sequences over their two-dimensional (2D) counterparts. This development has been made possible by advances in MRI scanner hardware and software. In this article, we review the 3D versions of conventional sequences, including T1-weighted, T2-weighted and fluid-attenuated inversion recovery (FLAIR), as well as more advanced scans, including double inversion recovery (DIR), FLAIR2, FLAIR*, phase-sensitive inversion recovery, and susceptibility weighted imaging (SWI).

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 Use of Magnetic Resonance Imaging to Predict Outcome after Stroke: A Review of Experimental and Clinical Evidence

2010 ◽  
Vol 30 (4) ◽  
pp. 703-717 ◽  
Author(s):  
Tracy D Farr ◽  
Susanne Wegener
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Complete Recovery ◽  
Research Translation ◽  
Resonance Imaging ◽  
Preclinical Research ◽  
Stroke Research ◽  
Future Potential ◽  
Magnetic Resonance Imaging Mri ◽  
The Individual

Despite promising results in preclinical stroke research, translation of experimental data into clinical therapy has been difficult. One reason is the heterogeneity of the disease with outcomes ranging from complete recovery to continued decline. A successful treatment in one situation may be ineffective, or even harmful, in another. To overcome this, treatment must be tailored according to the individual based on identification of the risk of damage and estimation of potential recovery. Neuroimaging, particularly magnetic resonance imaging (MRI), could be the tool for a rapid comprehensive assessment in acute stroke with the potential to guide treatment decisions for a better clinical outcome. This review describes current MRI techniques used to characterize stroke in a preclinical research setting, as well as in the clinic. Furthermore, we will discuss current developments and the future potential of neuroimaging for stroke outcome prediction.

scholarly journals Effectiveness of low-field magnetic resonance imaging in diagnosing brachial plexus tumours in dogs – short communication

2015 ◽  
Vol 59 (2) ◽  
pp. 317-319
Author(s):  
Zbigniew Adamiak ◽  
Yauheni Zhalniarovich ◽  
Paulina Przyborowska ◽  
Joanna Głodek ◽  
Adam Przeworski
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Brachial Plexus ◽  
Resonance Imaging ◽  
Gadolinium Contrast ◽  
Gadolinium Contrast Agent ◽  
Low Field ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri ◽  
Brachial Plexus Tumours

AbstractThe aim of the study was to identify magnetic resonance imaging (MRI) sequences that contribute to a quick and reliable diagnosis of brachial plexus tumours in dogs. The tumours were successfully diagnosed in 6 dogs by the MRI with the use of SE, FSE, STIR, Turbo 3 D, 3D HYCE, and GE sequences and the gadolinium contrast agent

scholarly journals Grading of Gliomas by Using Radiomic Features on Multiple Magnetic Resonance Imaging (MRI) Sequences

2017 ◽  
Vol 23 ◽  
pp. 2168-2178 ◽  
Author(s):  
Jiang-bo Qin ◽  
Zhenyu Liu ◽  
Hui Zhang ◽  
Chen Shen ◽  
Xiao-chun Wang ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

Failed visualization of clot signal in cerebral venous thrombosis on initial MR imaging

VASA ◽  
2007 ◽  
Vol 36 (4) ◽  
pp. 275-277
Author(s):  
Cioli ◽  
von Stockhausen ◽  
Jauss ◽  
Siekmann ◽  
Stolz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Venous Thrombosis ◽  
Cerebral Venous Thrombosis ◽  
Spin Echo ◽  
Mr Venography ◽  
Resonance Imaging ◽  
Venous Flow ◽  
Positive Identification ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

Currently, the combination of T1- and T2-weighted spin echo magnetic resonance imaging (MRI) sequences with MR venography is considered the best diagnostic tool for diagnosing cerebral venous thrombosis (CVT), because they allow positive identification of the thrombotic clot along with the disturbed venous flow signal. We report two patients in whom initial MRI with the mentioned techniques did not show a clot signal. In both patients anticoagulation was started despit lacking proof of CVT by imaging and both patients improved. Only on repeated MRI sinus clot signal could be confirmed.

scholarly journals The ivy sign

2014 ◽  
Vol 18 (1) ◽  
Author(s):  
Nasreen Mahomed ◽  
Evance Chisama ◽  
Sanjay Prabhu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Moyamoya Disease ◽  
Signal Intensity ◽  
Perivascular Spaces ◽  
Resonance Imaging ◽  
Leptomeningeal Enhancement ◽  
Weighted Magnetic Resonance Imaging ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

The ivy sign refers to diffuse bilateral leptomeningeal enhancement on post- contrastT1-weighted magnetic resonance imaging (MRI) and increased signal intensity in bilateralsubarachnoid spaces and perivascular spaces on T2-weighted fluid attenuation inversionrecovery (FLAIR) MRI sequences in patients with moyamoya disease.

Second order Horner's syndrome in a cat

2009 ◽  
Vol 11 (8) ◽  
pp. 714-716 ◽  
Author(s):  
Luisa De Risio ◽  
James Fraser McConnell
Keyword(s):  
Sympathetic Innervation ◽  
Second Order ◽  
Horner’S Syndrome ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Horner's Syndrome ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri ◽  
Pharmacological Testing ◽  
Clinical Abnormality

This case report describes the clinical and magnetic resonance imaging (MRI) findings of a 3.5-year-old, male neutered, domestic shorthair cat with second order Horner's syndrome as the only clinical abnormality. The neuroanatomical pathway of the sympathetic innervation to the eye, differential diagnoses for Horner's syndrome in cats, and the interpretation of pharmacological testing are reviewed. The unusual MRI findings and the value of fat-suppressed MRI sequences are discussed.

Brain magnetic resonance imaging does not contribute to the diagnosis of chronic neuroborreliosis

2007 ◽  
Vol 48 (7) ◽  
pp. 755-762 ◽  
Author(s):  
A. Aalto ◽  
J. Sjöwall ◽  
L. Davidsson ◽  
P. Forsberg ◽  
Ö. Smedby
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Disease Duration ◽  
Brain Magnetic Resonance Imaging ◽  
White Matter Lesions ◽  
Resonance Imaging ◽  
Mri Findings ◽  
Significant Difference ◽  
Fluid Attenuated Inversion Recovery ◽  
Magnetic Resonance Imaging Mri

Background: Borrelia infections, especially chronic neuroborreliosis (NB), may cause considerable diagnostic problems. This diagnosis is based on symptoms and findings in the cerebrospinal fluid but is not always conclusive. Purpose: To evaluate brain magnetic resonance imaging (MRI) in chronic NB, to compare the findings with healthy controls, and to correlate MRI findings with disease duration. Material and Methods: Sixteen well-characterized patients with chronic NB and 16 matched controls were examined in a 1.5T scanner with a standard head coil. T1- (with and without gadolinium), T2-, and diffusion-weighted imaging plus fluid-attenuated inversion recovery (FLAIR) imaging were used. Results: White matter lesions and lesions in the basal ganglia were seen in 12 patients and 10 controls (no significant difference). Subependymal lesions were detected in patients down to the age of 25 and in the controls down to the age of 43. The number of lesions was correlated to age both in patients (ρ = 0.83, P<0.01) and in controls (ρ = 0.61, P<0.05), but not to the duration of disease. Most lesions were detected with FLAIR, but many also with T2-weighted imaging. Conclusion: A number of MRI findings were detected in patients with chronic NB, although the findings were unspecific when compared with matched controls and did not correlate with disease duration. However, subependymal lesions may constitute a potential finding in chronic NB.

scholarly journals Susceptibility Weighted Imaging as a Useful Imaging Adjunct in Hemichorea Hyperglycaemia

2013 ◽  
Vol 2013 ◽  
pp. 1-3 ◽  
Author(s):  
Ferry Dharsono ◽  
Andrew Thompson ◽  
Jolandi van Heerden ◽  
Andrew Cheung
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Corpus Striatum ◽  
Clinical Entity ◽  
Susceptibility Weighted Imaging ◽  
Resonance Imaging ◽  
Weighted Image ◽  
Susceptibility Weighted Image ◽  
Mri Sequences ◽  
Magnetic Resonance Imaging Mri

Hyperglycaemia with hemichorea (HGHC) is an unusual clinical entity that can be associated with corpus striatum hyperintensity on T1-weighted (T1W) magnetic resonance imaging (MRI) sequences. We report the utility of the susceptibility weighted image (SWI) sequence and the filtered phase SWI sequence in the imaging assessment of HGHC.

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