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Jovanovic M, Radenkovic S, Stosic-Opincal T, Lavrnic S, Gavrilovic S, Lazovic-Popovic B, Soldatovic I, Maksimovic R. Differentiation between progression and pseudoprogresion by arterial spin labeling MRI in patients with glioblastoma multiforme. J BUON 2017; 22:1061-1067. [PMID: 28952228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
PURPOSE To compare arterial spin labeling (ASL) perfusion technique with the clinically established dynamic susceptibility contrast-enhanced (DSC) perfusion weighted-imaging (PWI), and to determine its value in routine MRI evaluation of disease progression in patients with glioblastoma multiforme (GBM). METHODS A prospective intraindividual study was performed in 31 patients with histologically proven GBM who had clinical and/or radiological deterioration after treatment, including surgery, radiotherapy and therapy with temozolomide. Conventional brain protocol with ASL and DSC techniques was performed on 3T MRI unit. Cerebral blood flow (CBF) and cerebral blood volume (CBV) maps were analyzed by means of regions of interest (ROI). Each ROI average value was normalized to the contralateral normal brain parenchyma ROI value. Neuroradiologists analyzed CBF and CBV maps separately, and classified patients into progression or pseudoprogression group. Radiological diagnosis was confirmed by clinical-radiological follow-up for at least three months after patient deterioration. RESULTS High linear correlation existed between DSC-PWI and ASL in the tumor ROI (r=0.733; p<0.001). 92% of ASL CBF maps were informative. ASL detected all lesions as well as DSC MRI. Both techniques provided perfusion values closely correlated. CONCLUSION ASL allows distinction between GBM progression and pseudoprogression, and it can be used as reliable alternative to DSC-PWI.
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Affiliation(s)
- Marija Jovanovic
- Clinical Center of Serbia, Radiology and MRI Center, Belgrade, Serbia
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Rocca MA, Preziosa P, Mesaros S, Pagani E, Dackovic J, Stosic-Opincal T, Drulovic J, Filippi M. Clinically Isolated Syndrome Suggestive of Multiple Sclerosis: Dynamic Patterns of Gray and White Matter Changes—A 2-year MR Imaging Study. Radiology 2016; 278:841-53. [DOI: 10.1148/radiol.2015150532] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Preziosa P, Rocca MA, Mesaros S, Pagani E, Drulovic J, Stosic-Opincal T, Dackovic J, Copetti M, Caputo D, Filippi M. Relationship between damage to the cerebellar peduncles and clinical disability in multiple sclerosis. Radiology 2014; 271:822-30. [PMID: 24555637 DOI: 10.1148/radiol.13132142] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE To assess whether a structural disconnection between the cerebellum and the cerebral hemispheres contributes to cerebellar and brainstem symptoms in multiple sclerosis (MS). MATERIALS AND METHODS This study was approved by the local ethics committee, and written informed consent was obtained from each participant. Brain T2 lesion load, cerebellar white matter and gray matter volumes, and tract-specific measures of the middle and superior cerebellar peduncles were derived from 172 patients with MS and 46 control subjects. Predictors of clinical impairment, which was determined at ambulation and with cerebellar and brainstem functional system scores, were identified by using random forest analysis. RESULTS Of the 172 patients, 112 (65%) had middle cerebellar peduncle T2 lesions and 74 (43%) had superior cerebellar peduncle T2 lesions. T2 lesions in the middle and superior cerebellar peduncles were more common in clinically impaired patients than in unimpaired patients (P = .05 to <.0001). Most conventional magnetic resonance imaging metrics were more abnormal in impaired patients than in unimpaired patients (P = .03 to <.0001). Except for axial diffusivity, diffusivity abnormalities of the middle and superior cerebellar peduncles were more severe in clinically impaired patients than in unimpaired patients (P = .04 to <.0001). A minimal overlap was found between diffusivity abnormalities and T2 lesions. Compared with volumetric measures of T2 lesions or cerebellar atrophy, diffusivity measures of middle or superior cerebellar peduncle damage enabled better differentiation between clinically impaired and unimpaired patients (C statistics: 61%-70%). CONCLUSION The assessment of middle and superior cerebellar peduncle damage contributes to the explanation of cerebellar and/or brainstem symptoms and ambulatory impairment in MS.
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Affiliation(s)
- Paolo Preziosa
- From the Neuroimaging Research Unit (P.P., M.A.R., E.P., M.F.) and Department of Neurology (P.P., M.A.R., M.F.), Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy; Clinics of Neurology (S.M., J. Drulovic, J. Dackovic) and Radiology (T.S.O.), Faculty of Medicine, University of Belgrade, Belgrade, Serbia; Biostatistics Unit, IRCCS-Ospedale Casa Sollievo della Sofferenza, San Giovanni Rotondo, Foggia, Italy (M.C.); and Department of Neurology, Scientific Institute Fondazione Don Gnocchi, Milan, Italy (D.C.)
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Potpara TS, Polovina M, Licina M, Jaksic M, Padjen V, Petrovic I, Bumbasirevic LJ, Stosic-Opincal T, Lip GYH. Silent cerebral lesions in patients with non-valvular atrial fibrillation and structurally normal hearts. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Potpara TS, Polovina M, Jaksic M, Licina M, Padjen V, Stosic-Opincal T, Bumbasirevic LJ, Lip GYH. Predicting silent cerebral microischemia in patients with non-valvular atrial fibrillation and structurally normal hearts: the CHADS2, CHA2DS2-VASc and -R scores. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rocca MA, Mesaros S, Preziosa P, Pagani E, Stosic-Opincal T, Dujmovic-Basuroski I, Drulovic J, Filippi M. Wallerian and trans-synaptic degeneration contribute to optic radiation damage in multiple sclerosis: a diffusion tensor MRI study. Mult Scler 2013; 19:1610-7. [DOI: 10.1177/1352458513485146] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background: Optic radiation (OR) damage occurs in multiple sclerosis (MS). Objectives: The purpose of this study was to explore the contribution of local and distant mechanisms associated with OR damage in MS. Methods: Diffusion tensor (DT) magnetic resonance imaging (MRI) tractography probability maps of the ORs were derived from 102 MS patients and 11 controls. Between-group differences of OR normal-appearing white matter (NAWM) damage and topographical distribution of OR damage were assessed using quantitative and voxel-wise analyses, considering the influence of previous optic neuritis (ON+) and T2 OR lesions (T2 OR+). Results: OR NAWM diffusivity abnormalities were more severe in ON+ patients vs patients without previous optic neuritis (ON–) and T2 OR+ vs T2 OR– patients. Damage to the anterior portions of the ORs was more severe in ON+ vs ON– patients. Compared to controls and T2 OR– patients, T2 OR+ patients experienced a more distributed pattern of DT MRI abnormalities along the ORs, with an increased axial diffusivity limited to the anterior portions of the ORs. In T2 OR+ group, ON+ vs ON– patients showed DT MRI abnormalities in the middle portion of the ORs, in correspondence with focal lesions. OR damage correlated with OR T2 lesion volume, visual dysfunction and optic nerve atrophy. Conclusions: Both trans-synaptic degeneration secondary to optic nerve damage and Wallerian degeneration due to local T2 lesions contribute to OR damage in MS.
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Affiliation(s)
- Maria A Rocca
- Neuroimaging Research Unit, Vita-Salute San Raffaele University, Italy
- Department of Neurology, Vita-Salute San Raffaele University, Italy
| | - Sarlota Mesaros
- Clinic of Neurology, Faculty of Medicine, University of Belgrade, Serbia
| | - Paolo Preziosa
- Neuroimaging Research Unit, Vita-Salute San Raffaele University, Italy
- Department of Neurology, Vita-Salute San Raffaele University, Italy
| | - Elisabetta Pagani
- Neuroimaging Research Unit, Vita-Salute San Raffaele University, Italy
| | | | | | - Jelena Drulovic
- Clinic of Neurology, Faculty of Medicine, University of Belgrade, Serbia
| | - Massimo Filippi
- Neuroimaging Research Unit, Vita-Salute San Raffaele University, Italy
- Department of Neurology, Vita-Salute San Raffaele University, Italy
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Rocca MA, Valsasina P, Damjanovic D, Horsfield MA, Mesaros S, Stosic-Opincal T, Drulovic J, Filippi M. Voxel-wise mapping of cervical cord damage in multiple sclerosis patients with different clinical phenotypes. J Neurol Neurosurg Psychiatry 2013; 84:35-41. [PMID: 23064100 DOI: 10.1136/jnnp-2012-303821] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To apply voxel-based methods to map the regional distribution of atrophy and T2 hyperintense lesions in the cervical cord of multiple sclerosis (MS) patients with different clinical phenotypes. METHODS Brain and cervical cord 3D T1-weighted and T2-weighted scans were acquired from 31 healthy controls (HC) and 77 MS patients (15 clinically isolated syndromes (CIS), 15 relapsing-remitting (RR), 19 benign (B), 15 primary progressive (PP) and 13 secondary progressive (SP) MS). Hyperintense cord lesions were outlined on T2-weighted scans. The T2- and 3D T1-weighted cord images were then analysed using an active surface method which created output images reformatted in planes perpendicular to the estimated cord centre line. These unfolded cervical cord images were co-registered into a common space; then smoothed binary cord masks and lesion masks underwent spatial statistic analysis (SPM8). RESULTS No cord atrophy was found in CIS patients versus HC, while PPMS had significant cord atrophy. Clusters of cord atrophy were found in BMS versus RRMS, and in SPMS versus RRMS, BMS and PPMS patients, mainly involving the posterior and lateral cord segments. Cord lesion probability maps showed a significantly greater likelihood of abnormalities in RRMS, PPMS and SPMS than in CIS and BMS patients. The spatial distributions of cord atrophy and cord lesions were not correlated. In progressive MS, regional cord atrophy was correlated with clinical disability and impairment in the pyramidal system. CONCLUSIONS Voxel-based assessment of cervical cord damage is feasible and may contribute to a better characterisation of the clinical heterogeneity of MS patients.
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Affiliation(s)
- Maria A Rocca
- Neuroimaging Research Unit, Institute of Experimental Neurology, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Via Olgettina, 60-20132 Milan, Italy
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Lavrnic S, Macvanski M, Ristic-Balos D, Gavrilov M, Damjanovic D, Gavrilovic S, Milicevic M, Skender-Gazibara M, Stosic-Opincal T. Papillary glioneuronal tumor: unexplored entity. J Neurol Surg A Cent Eur Neurosurg 2012; 73:224-9. [PMID: 21842459 DOI: 10.1055/s-0032-1313636] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Papillary glioneuronal tumors represent a new and rare entity of an uncommon morphologic subtype of low-grade mixed neuronal-glial neoplasms with an unclear etiology. They are described as benign lesions with extraventricular localization. We report the second case of papillary glioneuronal tumor with recurrent nature after gross-total resection, and the third case of this tumor with intraventricular localization. While conventional magnetic resonance imaging of papillary glioneuronal tumors is well described in literature, there are no data based on advanced magnetic resonance techniques. The present article represents a review of clinicopathological and both conventional and advanced magnetic resonance imaging characteristics of papillary glioneuronal tumors, with focus on 2 cases with atypical course and localization.
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Affiliation(s)
- S Lavrnic
- Clinical Center of Serbia, Center for Radiology and Magnetic Resonance Imaging, Belgrade, Serbia
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Preziosa P, Rocca M, Mesaros S, Pagani E, Stosic-Opincal T, Caputo D, Drulovic J, Comi G, Filippi M. Clinical Impairment in Multiple Sclerosis Is Related to the Damage of Clinically Eloquent White Matter Tracts (P03.059). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Damjanovic D, Rocca M, Valsasina P, Mesaros S, Horsfield M, Stosic-Opincal T, Drulovic J, Comi G, Filippi M. A Voxel-Based Assessment of Cervical Cord Atrophy in MS Patients (P03.061). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Preziosa P, Rocca M, Mesaros S, Pagani E, Kacar K, Stosic-Opincal T, Drulovic J, Comi G, Filippi M. Damage to the Optic Radiations in Multiple Sclerosis Studied Using DT MRI (P03.031). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p03.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Mesaros S, Rocca MA, Kacar K, Kostic J, Copetti M, Stosic-Opincal T, Preziosa P, Sala S, Riccitelli G, Horsfield MA, Drulovic J, Comi G, Filippi M. Diffusion tensor MRI tractography and cognitive impairment in multiple sclerosis. Neurology 2012; 78:969-75. [PMID: 22377806 DOI: 10.1212/wnl.0b013e31824d5859] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To assess the correlation between cognitive impairment and overall vs regional CNS damage, quantified using conventional and diffusion tensor (DT) MRI tractography in multiple sclerosis (MS). METHODS Brain dual-echo, T1-weighted, and DT MRI data were acquired from 82 patients with MS. DT tractography was used to produce maps of white matter (WM) tracts involved in cognition. The sensory thalamocortical projections and optic radiations were studied as "control" WM tracts. The contribution of global brain damage (T2 lesion volume, normalized brain volume, gray matter [GM] volume, WM volume, DT MRI measures of normal-appearing WM and GM damage) and damage to selected WM tracts to overall cognitive impairment and to impairment at individual neuropsychological tests was assessed using a random forest (RF) analysis. RESULTS Thirty-three patients had cognitive impairment. The majority of MRI measures differed significantly between cognitively impaired and cognitively preserved (CP) patients. Significant correlations were found between performance in the majority of neuropsychological tests and global or regional brain damage (r ranging from -0.60 to 0.57). The RF analysis showed a high performance in classifying cognitively impaired vs CP patients, with a classification (C)-index = 76.8, as well as in classifying patients' impairment in individual neuropsychological tests (C-index between 75.6% and 86.6%). Measures of lesional damage in cognitive-related tracts, rather than measures of normal-appearing WM damage in the same tracts or global brain/WM/GM damage, resulted in the highest classification accuracy. CONCLUSIONS Lesions in strategic brain WM tracts contribute to cognitive impairment in MS through a multisystem disconnection syndrome.
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Affiliation(s)
- S Mesaros
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, Scientific Institute and University Vita-Salute San Raffaele, Milan, Italy.
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Mladenovic AS, Markovic ZZ, Hyodoh HH, Stosic-Opincal T. Correlation of CT aortography measurements of infrarenal aortic aneurysms and body mass index in preprocedural evaluation for endovascular repair. Clin Anat 2012; 25:767-72. [PMID: 22271495 DOI: 10.1002/ca.22027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Revised: 08/07/2011] [Accepted: 12/07/2011] [Indexed: 11/10/2022]
Abstract
The aim of this study is to analyze the morphological differences of infrarenal aortic aneurysms and common iliac arteries that are important for endovascular management between patients of different body mass index using 64 slice multidetector row CT aortography. This was a multicenter study of 100 patients (50 Europeans and 50 Japanese). All patients had risk factors, manifest symptoms, and ultrasound verified aneurysmal dilation of the infrarenal aorta. All examinations were performed on the same CT platform using the same post-processing protocols. Due to the heterogeneity of the population, several statistical models were used. Significant differences were found in morphological parameters of infrarenal aorta in relation to BMI. In over one out of three patients with BMI less than 23, endovascular treatment is contraindicated due to the dimensions of the aneurysmal neck. Relative to BMI value, differences were found in transverse diameters of the medium part of the aneurysm and in the length of common iliac arteries. CT aortography performed on a 64 slice multidetector row CT platform provides precise and numerous data for the analysis of anatomical and pathological differences of infrarenal aortic aneurysms that are of crucial importance for the planning of treatment and the analysis of the differences relating to body habitus.
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Rocca MA, Horsfield MA, Sala S, Copetti M, Valsasina P, Mesaros S, Martinelli V, Caputo D, Stosic-Opincal T, Drulovic J, Comi G, Filippi M. A multicenter assessment of cervical cord atrophy among MS clinical phenotypes. Neurology 2011; 76:2096-102. [PMID: 21670439 DOI: 10.1212/wnl.0b013e31821f46b8] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE In this multicenter study, a new semiautomatic method for segmenting the cervical cord from C2 to C5 was used to investigate the correlation between cord atrophy and clinical disability in a large sample of patients with multiple sclerosis (MS). METHODS T2 and 3-dimensional T1-weighted cervical cord scans and dual-echo brain scans were acquired from 143 healthy controls, 22 patients with clinically isolated syndromes (CIS), 101 patients with relapsing-remitting MS (RRMS), 79 patients with secondary progressive MS (SPMS), 58 patients with benign MS (BMS), and 75 patients with primary progressive MS (PPMS) in 3 European centers. Normalized cervical cord cross-sectional area (CSAn) was measured by an active surface cord model. Between-group comparisons were performed using linear mixed-effect models. A nonparametric kernel estimator was used to obtain smoothed plots of CSA along the cervical cord. RESULTS Cord CSAn was significantly lower in PPMS vs healthy controls, BMS vs RRMS, SPMS vs BMS, and RRMS. From C2 to C5, a net separation and definition of the plots of patients with BMS, PPMS, and SPMS was seen with respect to those of the other study groups. CSAn was correlated with Expanded Disability Status Scale (r = -0.49, p < 0.0001), with a differential effect among disease clinical phenotypes: no association in either CIS or in BMS; association in RRMS (r = -0.30, p = 0.001), SPMS (r = -0.34, p = 0.001), and PPMS (r = -0.27, p = 0.01). CONCLUSIONS Cervical cord atrophy provides a relevant and useful marker for the characterization of clinical heterogeneity of patients with MS. The stability of this measure among different centers supports its use as potential outcome measure to monitor disease progression in multicenter trials.
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Affiliation(s)
- M A Rocca
- Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute and University, Milan, Italy
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Preziosa P, Rocca MA, Mesaros S, Pagani E, Stosic-Opincal T, Kacar K, Absinta M, Caputo D, Drulovic J, Comi G, Filippi M. Intrinsic Damage to the Major White Matter Tracts in Patients with Different Clinical Phenotypes of Multiple Sclerosis: A Voxelwise Diffusion-Tensor MR Study. Radiology 2011; 260:541-50. [DOI: 10.1148/radiol.11110315] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Lavrnic D, Dakovic M, Peric S, Rakocevic-Stojanovic V, Basta I, Marjanovic I, Stosic-Opincal T, Lavrnic S. Proton magnetic resonance spectroscopy of the intrinsic tongue muscles in patients with myasthenia gravis with different autoantibodies. J Neurol Sci 2011; 302:25-8. [PMID: 21236447 DOI: 10.1016/j.jns.2010.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 12/10/2010] [Accepted: 12/13/2010] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To assess lipid composition of the intrinsic tongue muscles in patients with myasthenia gravis (MG). METHODS This study included 15 MG patients with antibodies against muscle-specific kinase (MuSK), 15 matched MG patients with antibodies against acetylcholine receptor (AChR) and 15 matched healthy subjects. Middle posterior region of the tongue was analyzed by single voxel point-resolved proton magnetic resonance spectroscopy (MRS) using 1.5T MRI scanner. RESULTS MRS obtained from subject with AChR MG showed a broad resonance arising from methylene groups of lipids (PMN) with no observable shoulder attributed to methyl groups (PML). Full-width at half maximum (FWHM) of PMN+PML peak showed higher value in patients with AChR MG in comparison to healthy subjects and MuSK MG patients (p<0.05). In patients with MuSK MG, the shape and FWHM of PMN+PML peak was similar as in healthy subjects (p>0.05), with tendency toward increased ratio between PMN and resonance from vinyl protons of lipids (PV). In both AChR and MuSK MG, total creatine resonance (creatine+phosphocreatine, CP) was almost absent with significant increase of PMN/CP ratio in comparison to healthy subjects (p<0.05). CONCLUSION MRS is useful in revealing muscle lipid composition in MG. In patients with AChR MG, MRS showed increased lipid content in the tongue muscles due to the lipid migration from intra- to extramyocellular space. Finding in patients with MuSK MG might reflect intramyocellular lipid deposition in the tongue. CP decrease in tongue muscles indicated impairment of oxidative metabolism in both AChR MG and MuSK MG.
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Affiliation(s)
- Dragana Lavrnic
- Institute of Neurology, Clinical Center of Serbia, School of Medicine, University of Belgrade, Belgrade, Serbia.
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Lavrnic S, Stosic-Opincal T, Gavrilovic S, Grujicic D, Peric V, Gavrilov M, Milenkovic R, Cvetkovic-Dozic D. Intraventricular Textiloma with Granuloma Formation Following Third Ventricle Colloid Cyst Resection – A Case Report. ACTA ACUST UNITED AC 2009; 70:86-8. [DOI: 10.1055/s-2008-1081506] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Stosic-Opincal T, Golubicic I, Cvetkovic D, Popovic V, Antunovic V. Late Relapse of Pediatric Medulloblastoma. Neuroradiol J 2006; 19:583-8. [DOI: 10.1177/197140090601900504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2006] [Accepted: 07/06/2006] [Indexed: 11/15/2022] Open
Abstract
Medulloblastoma ( MB), the most common malignant brain tumor of childhood, is classified according to pathomorphologic characteristics in the group of central nervous system embryonal tumors, but both its pathogenesis and biologic behavior remain unknown. In addition, the relationship of MB to other embryonal brain tumors is debated and response to therapy is difficult to predict. The authors report an uncommon case of unfavorable late relapse, local as well as distant, in a 26-year old male patient, who was free of disease and without treatment-related morbidity for fifteen years after combined therapy for pediatric MB.
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Affiliation(s)
| | - I. Golubicic
- Institute for Oncology and Radiology of Serbia; Belgrade
| | - D. Cvetkovic
- Institute of Pathology, Clinical Center of Serbia
| | - V. Popovic
- Institute of Endocrinology, Clinical Center of Serbia; Belgrade
| | - V. Antunovic
- Institute of Neurosurgery, Clinical Center of Serbia; Belgrade
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Affiliation(s)
- T Stosic-Opincal
- Magnetic Resonance Unit, Clinical Center of Serbia, University of Belgrade, Serbia and Montenegro
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Stosic-Opincal T, Peric V, Lilic G, Gavrilovic S, Milakovic B, Grujicic D. Spine MRI findings in a patient with tuberous sclerosis: a case report--part II. Spine (Phila Pa 1976) 2005; 30:992-3. [PMID: 15834345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Tatjana Stosic-Opincal
- Clinical Center of Serbia, MR Center Clinical Center of Serbia, Institute for Neurosurgery Belgrade, Serbia and Montenegro.
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Stosic-Opincal T, Peric V, Lilic G, Gavrilovic S, Milakovic B, Grujicic D. Spine MRI findings in a patient with tuberous sclerosis: a case report-part I. Spine (Phila Pa 1976) 2005; 30:844. [PMID: 15803091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Tatjana Stosic-Opincal
- Clinical Center of Serbia, MR Center Clinical Center of Serbia, Institute for Neurosurgery Belgrade, Serbia and Montenegro.
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