Journals Journal of Neuroradiology. Jou...

Journal of Neuroradiology. Journal de Neuroradiologie
Lakir D Patel, Prashant Raghavan, Shiyu Tang, Seongjin Choi, Daniel M Harrison
BACKGROUND AND PURPOSE: Meningeal lymphatic vessels (MLVs) along the dural venous sinuses are suspected to be important in connecting the glymphatic and peripheral lymphatic system. Understanding the topography of MLVs may clarify the role of the glymphatic system in neurological diseases. The aim of this analysis was to use high resolution pre- and post-contrast FLAIR 7T MRI to identify and characterize the morphology of MLV in a cohort of healthy volunteers. MATERIALS AND METHODS: MRI examinations of seventeen healthy volunteers enrolled as controls in a larger 7T MRI study were reviewed...
March 12, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Héloïse Ifergan, Peggy Reiner, Davide Simonato, Giulia Frasca Polara, Mikael Mazighi, Emmanuel Houdart, Eric Jouvent, Marc-Antoine Labeyrie
BACKGROUND AND PURPOSE: Early ischemic recurrence (EIR) following the diagnosis of acute spontaneous cervical artery dissection (CeAD) has been little investigated. We aimed to determine the prevalence and determinants on admission of EIR in a large single-center retrospective cohort study of patients with CeAD. METHODS: EIR was defined as any ipsilateral clinical or radiological cerebral ischemia or intracranial artery occlusion, not present on admission and occurring within 2 weeks...
March 10, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Federico Sabuzi, Jonathan Cortese, Valerio Da Ros, Cristian Mihalea, Vanessa Chalumeau, Jacques Moret, Jildaz Caroff, Laurent Spelle
BACKGROUND: Safety and efficacy of the WEB (Woven EndoBridge) device have been extensively evaluated in several good clinical practice studies. Nonetheless, the WEB had several structural evolutions overtime up to the fifth generation WEB device (WEB17). Here, we tried to understand how this may have modified our practices and enlarged our indications for its use. METHODS: We retrospectively analyzed data from all patients with aneurysms treated (or intended to be treated) with a WEB at our institution between July 2012 and February 2022...
March 1, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
A Förster, Ana Ramos, H Wenz, C Groden, A Alonso
PURPOSE: Detection of ischemic lesions in patients with transient neurovascular symptoms is relevant for the estimation of the risk of a subsequent stroke and etiological classification. To improve detection rates, different technical approaches have been used, such as diffusion-weighted imaging (DWI) with high b-values or higher magnetic field strength. Here, we sought to investigate the value of computed DWI (cDWI) with high b-values in these patients. METHODS: From an MRI report database we identified patients with transient neurovascular symptoms who underwent repeated MRI including DWI...
February 28, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Alexandre Picherit, Dr Basile Kerleroux, Géraud Forestier, Gaultier Marnat, Claire Boutet, Héloïse Ifergan, Jean-François Hak, Alexis Guedon, Augustin Lecler, Olivier Heck, Christophe Paya, Julien Burel, Matthieu Masy, Marie-Agnès Lauvin, Mathieu Rodallec, Francois Eugene, François Zhu, Raoul Pop, Samy Boucebci, Sébastien Soize, Grégoire Boulouis, Romain Bourcier
OBJECTIVES: The aim of this study was to identify imaging protocols in patients with infective endocarditis through a nationwide survey. METHODS: An electronic evolutionary survey was sent to interventional Neuroradiologists among neuroradiological centers, under the aegis of the Société Française de Neuroradiologie. Among 33 contacted centers, 25 completed the survey (21 universitary hospitals and 4 peripheric hospitals). RESULTS: Most of the centers (88%) used systematic imaging screening in IE patients...
February 27, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Alexandru Dimancea, Hugo Trebern, Nader Sourour, Stéphanie Lenck, Frédéric Clarençon, Eimad Shotar
Cerebral micro-arteriovenous malformations (AVM) are defined by an infracentimetric nidus or a nidus solely visible on superselective digital subtraction angiography (DSA).1 , 2 While representing a minority of brain AVMs, intracerebral hemorrhage is a frequent manifestation.2 Micro-AVMs are often occult lesions, with superselective DSA being instrumental for increasing diagnostic yield.1 , 3 While superselective three-dimensional DSA (3D-DSA)/MR fusion imaging has been employed to better delineate anatomical proximity in cerebral AVMs with a visible nidus on MRI,4 this fusion algorithm has not yet been used for describing the relationship of micro-AVMs nidus and afferent arteries with neighboring structures, in order to guide endovascular and microsurgical procedures...
February 23, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
A Dimancea, S Mattioni, A Nouet, M Drir, A Santin, B Marrot, E Shotar, C Corcy, L Bottin, N A Sourour, K Premat, S Alamowitch, A Carpentier, V Degos, F Clarençon, F Lionnet, S Lenck
BACKGROUND AND PURPOSE: Intracranial aneurysms are frequent in patients with sickle cell anemia, while subarachnoid hemorrhage is a major cause of death and disability in young adult patients. Several characteristics, such as younger age and smaller size at rupture, may incline therapeutic decision towards exclusion treatments. Clinical guidelines on treatment of unruptured intracranial aneurysms in this population are still missing. We aimed to assess the safety and efficacy of the treatment of unruptured intracranial aneurysm in patients with sickle cell anemia, using an adapted hematological preparation regimen...
February 11, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Siqi Chen, Ting Su, Yicong Wang, Zixiao Li, Yinsheng Li, Yongshuai Ge, Donghua Mi
BACKGROUND AND PURPOSE: Current clinical computed tomography venographic (cCTV) images present limited cerebral venous profiles. Therefore, this study aimed to develop an automatic cerebral CTV imaging technique using computed tomographic perfusion (CTP) images in a cohort of patients with stroke. MATERIALS AND METHODS: We retrospectively evaluated 10 (intracerebral hemorrhage) and 2 (acute ischemic stroke) patients who underwent institutional CTP imaging. CTV images were processed with the proposed CTV (pCTV) technique, and pCTV and cCTV images were then independently evaluated by two experienced neuroradiologists blinded to all clinical information using a novel scoring method that considered overall image quality, venous visibility, and arterial mis-segmentation...
February 9, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Sherief Ghozy, Ahmed Y Azzam, Kevin M Kallmes, Stavros Matsoukas, Johanna T Fifi, Sven P R Luijten, Aad van der Lugt, Gautam Adusumilli, Jeremy J Heit, Ramanathan Kadirvel, David F Kallmes
BACKGROUND: Artificial intelligence (AI)-based algorithms have been developed to facilitate rapid and accurate computed tomography angiography (CTA) assessment in proximal large vessel occlusion (LVO) acute ischemic stroke, including internal carotid artery and M1 occlusions. In clinical practice, however, the detection of medium vessel occlusion (MeVO) represents an ongoing diagnostic challenge in which the added value of AI remains unclear. PURPOSE: To assess the diagnostic performance of AI platforms for detecting M2 occlusions...
February 9, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Confidence Raymond, Michael T Jurkiewicz, Akintunde Orunmuyi, Linshan Liu, Michael Oluwaseun Dada, Claes N Ladefoged, Jarmo Teuho, Udunna C Anazodo
PURPOSE: This systematic review provides a consensus on the clinical feasibility of machine learning (ML) methods for brain PET attenuation correction (AC). Performance of ML-AC were compared to clinical standards. METHODS: Two hundred and eighty studies were identified through electronic searches of brain PET studies published between January 1, 2008, and August 1, 2022. Reported outcomes for image quality, tissue classification performance, regional and global bias were extracted to evaluate ML-AC performance...
February 3, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Guillaume Charbonnier, Panagiotis Primikiris, Maxime Desmarets, Gregory Tio, Sergio Vancheri, Fortunato Di Caterino, Giovanni Vitale, Alessandra Biondi
BACKGROUND: Mechanical thrombectomy for acute ischemic stroke is effective and includes different technical approaches. Operators use direct aspiration, a stent retriever, or a combination of both. Direct aspiration can be performed with various catheters of different sizes depending on the diameter of the occluded vessel. PURPOSE: We studied the relationship between the catheter diameter in regards to the occluded vessel diameter and the rate of successful recanalization...
February 3, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Pacôme Constant Dit Beaufils, Matilde Karakachoff, Pierre-Antoine Gourraud, Romain Bourcier
No abstract text is available yet for this article.
January 29, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Adrien Ter Schiphorst, Pauline Prin, Vincent Costalat, Caroline Arquizan
Chronic internal carotid artery occlusions (CICAO) increase the risk of stroke recurrence and cognitive dysfunction. Here, we describe the case of an adult patient with ipsilateral CICAO who underwent endovascular treatment of anterior cerebral artery stenosis to improve cerebral perfusion. First, the patient presented ataxia and left facial palsy. Magnetic resonance imaging (MRI) showed right hemispherpe cerebral infarct, right CICAO, and sub-occlusive stenosis of the left bulbar internal carotid artery. Stenting of the left carotid artery was performed...
January 24, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
François-Daniel Ardellier, Seyyid Baloglu, Magdalena Sokolska, Vincent Noblet, François Lersy, Olivier Collange, Jean-Christophe Ferré, Adel Maamar, Béatrice Carsin-Nicol, Julie Helms, Maleka Schenck, Antoine Khalil, Augustin Gaudemer, Sophie Caillard, Julien Pottecher, Nicolas Lefèbvre, Pierre-Emmanuel Zorn, Muriel Matthieu, Jean Christophe Brisset, Clotilde Boulay, Véronique Mutschler, Yves Hansmann, Paul-Michel Mertes, Francis Schneider, Samira Fafi-Kremer, Mickael Ohana, Ferhat Meziani, Nicolas Meyer, Tarek Yousry, Mathieu Anheim, François Cotton, Hans Rolf Jäger, Stéphane Kremer
BACKGROUND AND PURPOSE: Cerebral hypoperfusion has been reported in patients with COVID-19 and neurological manifestations in small cohorts. We aimed to systematically assess changes in cerebral perfusion in a cohort of 59 of these patients, with or without abnormalities on morphological MRI sequences. METHODS: Patients with biologically-confirmed COVID-19 and neurological manifestations undergoing a brain MRI with technically adequate arterial spin labeling (ASL) perfusion were included in this retrospective multicenter study...
January 16, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Daniela Dumitriu LaGrange, Philippe Reymond, Olivier Brina, Robert Zboray, Antonia Neels, Isabel Wanke, Karl-Olof Lövblad
Following the advent of mechanical thrombectomy, occlusive clots in ischemic stroke have been amply characterized using conventional histopathology. Many studies have investigated the compositional variability of thrombi and the consequences of thrombus composition on treatment response. More recent evidence has emerged about the spatial heterogeneity of the clot or the preferential distribution of its components and compact nature. Here we review this emerging body of evidence, discuss its potential clinical implications, and propose the development of adequate characterization techniques...
January 14, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Jean Papaxanthos, Federico Cagnazzo, François-Louis Collemiche, Xavier Barreau, Răzvan Alexandru Radu, Florent Gariel, Imad Derraz, Gregory Gascou, Carlos Riquelme, Ivan Ferreira, Pierre-Henri Lefevre, Jérôme Berge, Vincent Costalat, Cyril Dargazanli, Gaultier Marnat
BACKGROUND AND PURPOSE: Antiplatelet therapy (APT) is a key element limiting the risk of thromboembolic events (TEE) in neuroendovascular procedures, including aneurysm treatment with flowdiverter. Clopidogrel combined with aspirin is the mostly reported dual APT (DAPT). However, resistance phenomenon and intraindividual efficacy fluctuation are identified limitations. In recent years, ticagrelor has been increasingly used in this indication. We compared these two DAPT regimens for intracranial aneurysm treated with flowdiverter...
January 13, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Diogo Goulart Corrêa, Simone Rachid de Souza, Tomás de Andrade Lourenção Freddi, Ana Paula Alves Fonseca, Roberto Queiroz Dos Santos, Luiz Celso Hygino da Cruz
Syphilis is an infectious disease caused by the spirochete Treponema pallidum, subspecies pallidum. Although its incidence has declined after the widespread availability of penicillin, it has recently re-emerged, especially in men who have sex with men and in people living with human immunodeficiency virus (HIV). The neurological manifestations of syphilis, generally known as neurosyphilis, may appear at any time during the infection, including the initial years after the primary infection. Neurosyphilis can be asymptomatic, only with cerebrospinal fluid abnormalities, or symptomatic, characterized by several different clinical syndromes, such as meningitis, gumma, meningovascular, brain parenchyma involvement, meningomyelitis, tabes dorsalis, and peripheral nervous system involvement...
January 11, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Charles Mellerio, Anne Isabelle de Parcevaux, Sylvain Charron, Pierre Etevenon, Catherine Oppenheim
No abstract text is available yet for this article.
January 6, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Ahmed K Ahmed, Jacob Core, Douglas S Fenton, Amit Desai, Vivek Gupta, Prasanna G Vibhute
Lesions within the skull base are the most challenging targets for percutaneous biopsy due to the likelihood of encountering a critical structure along any needle trajectory. Due to ICA proximity, the petrous apex is considered unsafe. We describe a novel percutaneous CT-guided approach for biopsying a petrous apex lesion via a contralateral mandibular condylar notch (subzygomatic approach). To our best knowledge, this approach has not been reported and can be safely employed with thorough planning.
January 5, 2023: Journal of Neuroradiology. Journal de Neuroradiologie
Sarv Priya, Caitlin Ward, Girish Bathla
No abstract text is available yet for this article.
December 27, 2022: Journal of Neuroradiology. Journal de Neuroradiologie
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