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{userid:"maria.i.vargas", "articletype":"article","pages":"672-681","author":"A Ailianou, A Fitsiori, A Syrogiannopoulou, S Toso, M Viallon, L Merlini, J Y Beaulieu, M I Vargas","year":"2012","title":"Review of the principal extra spinal pathologies causing sciatica and new MRI approaches.","month":"Jun","journal":"The British journal of radiology","publisher":"","volume":"85","number":"1014","note":"","tags":"Humans,Lumbosacral Plexus,Magnetic Resonance Imaging,Sciatica","booktitle":"","editor":"","abstract":"In this paper we illustrate the principal extraspinal pathologies causing sciatica and new approaches for the study of structures such as the lumbosacral plexus (LSP). Visualisation of the LSP in its entirety is difficult with conventional two-dimensional MRI sequences owing to its oblique orientation. In our institution, we have found that the utilisation of three-dimensional short tau inversion-recovery sampling perfection with application-optimised contrasts using different flip angle evolutions sequence is helpful, allowing multiplanar and maximum intensity projection reconstructions in the coronal oblique plane and curvilinear reformats through the plexus. Diffusion tensor imaging enables the observation of microstructural changes and can be useful in surgical planning. The normal anatomy of the LSP, its different extraspinal pathologies and differential diagnoses are thoroughly presented.","address":"","school":"","issn":"1748-880X","doi":"10.1259\/bjr\/84443179","isi":"","pubmed":"22374280","key":"Ailianou2012","howpublished":"","urllink":"","refid":62,"weight":62}
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{userid:"karl.lovblad", "articletype":"article","pages":"325-331","author":"Maria Isabel Vargas, Vitor Mendes Pereira, Sven Haller, Angeliki Ailianou, Judith Horvath, Fran\u00e7ois Lazeyras, Karl-Olof L\u00f6vblad","year":"2009","title":"Magnetic resonance imaging of infections of the white matter.","month":"Dec","journal":"Top Magn Reson Imaging","publisher":"","volume":"20","number":"6","note":"","tags":"Brain Mapping,Diffusion Magnetic Resonance Imaging,Humans,Leukoencephalopathies,Magnetic Resonance Imaging","booktitle":"","editor":"","abstract":"Infections of the nervous system are a common and serious occurrence. Neuroimaging has allowed to improve early detection and thus to initiate treatment earlier. Magnetic resonance (MR) imaging has become the method of choice in investigating a patient with suspicion of an infection of the central nervous system. Newer modalities such as MR spectroscopy and MR diffusion and perfusion will further help to improve diagnostic accuracy of the technique. For the investigation of infections of white matter, techniques such as diffusion imaging are essential.","address":"","school":"","issn":"1536-1004","doi":"10.1097\/RMR.0b013e318207713f","isi":"","pubmed":"21187725","key":"Vargas2009","howpublished":"","urllink":"","refid":20}
,

{userid:"karl.lovblad", "articletype":"article","pages":"325-331","author":"Maria Isabel Vargas, Vitor Mendes Pereira, Sven Haller, Angeliki Ailianou, Judith Horvath, Fran\u00e7ois Lazeyras, Karl-Olof L\u00f6vblad","year":"2009","title":"Magnetic resonance imaging of infections of the white matter.","month":"Dec","journal":"Topics in magnetic resonance imaging : TMRI","publisher":"","volume":"20","number":"6","note":"","tags":"Brain Mapping,Diffusion Magnetic Resonance Imaging,Humans,Leukoencephalopathies,Magnetic Resonance Imaging","booktitle":"","editor":"","abstract":"Infections of the nervous system are a common and serious occurrence. Neuroimaging has allowed to improve early detection and thus to initiate treatment earlier. Magnetic resonance (MR) imaging has become the method of choice in investigating a patient with suspicion of an infection of the central nervous system. Newer modalities such as MR spectroscopy and MR diffusion and perfusion will further help to improve diagnostic accuracy of the technique. For the investigation of infections of white matter, techniques such as diffusion imaging are essential.","address":"","school":"","issn":"1536-1004","doi":"10.1097\/RMR.0b013e318207713f","isi":"","pubmed":"21187725","key":"Vargas2009","howpublished":"","urllink":"","refid":170,"weight":170}
,

{userid:"karl-olof.lovblad", "articletype":"article","pages":"325-331","author":"Maria Isabel Vargas, Vitor Mendes Pereira, Sven Haller, Angeliki Ailianou, Judith Horvath, Fran\u00e7ois Lazeyras, Karl-Olof L\u00f6vblad","year":"2009","title":"Magnetic resonance imaging of infections of the white matter.","month":"Dec","journal":"Topics in magnetic resonance imaging : TMRI","publisher":"","volume":"20","number":"6","note":"","tags":"Brain Mapping,Diffusion Magnetic Resonance Imaging,Humans,Leukoencephalopathies,Magnetic Resonance Imaging","booktitle":"","editor":"","abstract":"Infections of the nervous system are a common and serious occurrence. Neuroimaging has allowed to improve early detection and thus to initiate treatment earlier. Magnetic resonance (MR) imaging has become the method of choice in investigating a patient with suspicion of an infection of the central nervous system. Newer modalities such as MR spectroscopy and MR diffusion and perfusion will further help to improve diagnostic accuracy of the technique. For the investigation of infections of white matter, techniques such as diffusion imaging are essential.","address":"","school":"","issn":"1536-1004","doi":"10.1097\/RMR.0b013e318207713f","isi":"","pubmed":"21187725","key":"Vargas2009","howpublished":"","urllink":"","refid":117,"weight":117}
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{userid:"maria.i.vargas", "articletype":"article","pages":"325-331","author":"Maria Isabel Vargas, Vitor Mendes Pereira, Sven Haller, Angeliki Ailianou, Judith Horvath, Fran\u00e7ois Lazeyras, Karl-Olof L\u00f6vblad","year":"2009","title":"Magnetic resonance imaging of infections of the white matter.","month":"Dec","journal":"Top Magn Reson Imaging","publisher":"","volume":"20","number":"6","note":"","tags":"Brain Mapping,Diffusion Magnetic Resonance Imaging,Humans,Leukoencephalopathies,Magnetic Resonance Imaging","booktitle":"","editor":"","abstract":"Infections of the nervous system are a common and serious occurrence. Neuroimaging has allowed to improve early detection and thus to initiate treatment earlier. Magnetic resonance (MR) imaging has become the method of choice in investigating a patient with suspicion of an infection of the central nervous system. Newer modalities such as MR spectroscopy and MR diffusion and perfusion will further help to improve diagnostic accuracy of the technique. For the investigation of infections of white matter, techniques such as diffusion imaging are essential.","address":"","school":"","issn":"1536-1004","doi":"10.1097\/RMR.0b013e318207713f","isi":"","pubmed":"21187725","key":"Vargas2009","howpublished":"","urllink":"","refid":"11"}
,

{userid:"maria.i.vargas", "articletype":"article","pages":"205-217","author":"Aikaterini Fitsiori, Fran\u00e7ois Lazeyras, Margritta Seeck, Duy Nguyen, Angeliki Ailianou, Jacqueline Delavelle, Maria-Isabel Vargas","year":"2012","title":"Malformations of cortical development of the human brain: a pictorial essay.","month":"Oct","journal":"Journal of neuroradiology. Journal de neuroradiologie","publisher":"","volume":"39","number":"4","note":"","tags":"Humans,Magnetic Resonance Imaging,Malformations of Cortical Development,Neuroimaging","booktitle":"","editor":"","abstract":"During development in utero of the human brain, an error in one or more of the orderly processes of neuroblast proliferation and differentiation, neuroblast migration and cortical organization may result in disordered neocortical development. Nowadays, the consequent malformations of the cerebral cortex and associated structures are detectable on pre- and postnatal examination with growing frequency, thanks to the evolution of modern imaging modalities. In particular, magnetic resonance imaging (MRI), due to its excellent contrast differentiation and multiplanar capabilities as well as the development of even newer techniques, such as diffusion tensor imaging and spectroscopy, has surpassed all other forms of imaging for the thorough exploration and analysis of congenital anomalies of the central nervous system. These malformations comprise a heterogeneous group of conditions in terms of both the timing and etiology of the developmental aberration as well as the resulting morphological phenotype, including epilepsy, developmental delay\/intellectual disability and focal neurological deficits. This study briefly presents some typical examples of congenital malformations of cortical development of the human brain that are encountered in practice. It is our belief that familiarity with the MRI presentations of these conditions can be of considerable value for adequate disease management and genetic counseling.","address":"","school":"","issn":"0150-9861","doi":"10.1016\/j.neurad.2011.06.002","isi":"","pubmed":"21831439","key":"Fitsiori2012","howpublished":"","urllink":"","refid":47,"weight":47}
,

{userid:"sven.haller", "articletype":"article","pages":"325-331","author":"Maria Isabel Vargas, Vitor Mendes Pereira, Sven Haller, Angeliki Ailianou, Judith Horvath, Fran\u00e7ois Lazeyras, Karl-Olof L\u00f6vblad","year":"2009","title":"Magnetic resonance imaging of infections of the white matter.","month":"Dec","journal":"Top Magn Reson Imaging","publisher":"","volume":"20","number":"6","note":"","tags":"Brain Mapping,Diffusion Magnetic Resonance Imaging,Humans,Leukoencephalopathies,Magnetic Resonance Imaging","booktitle":"","editor":"","abstract":"Infections of the nervous system are a common and serious occurrence. Neuroimaging has allowed to improve early detection and thus to initiate treatment earlier. Magnetic resonance (MR) imaging has become the method of choice in investigating a patient with suspicion of an infection of the central nervous system. Newer modalities such as MR spectroscopy and MR diffusion and perfusion will further help to improve diagnostic accuracy of the technique. For the investigation of infections of white matter, techniques such as diffusion imaging are essential.","address":"","school":"","issn":"1536-1004","doi":"10.1097\/RMR.0b013e318207713f","isi":"","pubmed":"21187725","key":"Vargas2009","howpublished":"","urllink":"","refid":40}
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{userid:"maria.i.vargas", "articletype":"article","pages":"43-68","author":"Bela S Purohit, Maria Isabel Vargas, Angeliki Ailianou, Laura Merlini, Pierre-Alexandre Poletti, Alexandra Platon, B\u00e9n\u00e9dicte M Delattre, Olivier Rager, Karim Burkhardt, Minerva Becker","year":"2016","title":"Orbital tumours and tumour-like lesions: exploring the armamentarium of multiparametric imaging.","month":"Feb","journal":"Insights into imaging","publisher":"","volume":"7","number":"1","note":"","tags":"","booktitle":"","editor":"","abstract":"Although the orbit is a small anatomical space, the wide range of structures present within it are often the site of origin of various tumours and tumour-like conditions, both in adults and children. Cross-sectional imaging is mandatory for the detection, characterization, and mapping of these lesions. This review focuses on multiparametric imaging of orbital tumours. Each tumour is reviewed in relation to its clinical presentation, compartmental location, imaging characteristics, and its histological features. We herein describe orbital tumours as lesions of the globe (retinoblastoma, uveal melanoma), optic nerve sheath complex (meningioma, optic nerve glioma), conal-intraconal compartment (hemangioma), extraconal compartment (dermoid\/epidermoid, lacrimal gland tumours, lymphoma, rhabdomysarcoma), and bone and sinus compartment (fibrous dysplasia). Lesions without any typical compartmental localization and those with multi-compartment involvement (veno-lymphatic malformation, plexiform neurofibroma, idiopathic orbital pseudotumour, IgG4 related disease, metastases) are also reviewed. We discuss the role of advanced imaging techniques, such as MR diffusion-weighted imaging (DWI), diffusion tensor imaging, fluoro-2-deoxy-D-glucose positron emission tomography CT (FDG-PET CT), and positron emission tomography MRI (MRI PET) as problem-solving tools in the evaluation of those orbital masses that present with non-specific morphologic imaging findings. Main messages\/Teaching points \u2022 A compartment-based approach is essential for the diagnosis of orbital tumours. \u2022 CT and MRI play a key role in the work-up of orbital tumours. \u2022 DWI, PET CT, and MRI PET are complementary tools to solve diagnostic dilemmas. \u2022 Awareness of salient imaging pearls and diagnostic pitfalls avoids interpretation errors.","address":"","school":"","issn":"1869-4101","doi":"10.1007\/s13244-015-0443-8","isi":"","pubmed":"26518678","key":"Purohit2016","howpublished":"","urllink":"","refid":116,"weight":116}
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