Reinhold Nafe, Luciana Porto, Patrick-Felix Samp, Se-Jong You, Elke Hattingen
The classification of diffuse gliomas into the adult type and the pediatric type is the new basis for the diagnosis and clinical evaluation. The knowledge for the neuroradiologist should not remain limited to radiological aspects but should be based additionally on the current edition of the World Health Organization (WHO) classification of tumors of the central nervous system (CNS). This classification defines the 11 entities of diffuse gliomas, which are included in the 3 large groups of adult-type diffuse gliomas, pediatric-type diffuse low-grade gliomas, and pediatric-type diffuse high-grade gliomas...
March 20, 2023: Clinical Neuroradiology
Gregor Nageler, Ingmar Gergel, Markus Fangerau, Michael Breckwoldt, Fatih Seker, Martin Bendszus, Markus Möhlenbruch, Ulf Neuberger
BACKGROUND: Endovascular thrombectomy (EVT) duration is an important predictor for neurological outcome. Recently it was shown that an angle of ≤ 90° of the internal carotid artery (ICA) is predictive for longer EVT duration. As manual angle measurement is not trivial and time-consuming, deep learning (DL) could help identifying difficult EVT cases in advance. METHODS: We included 379 CT angiographies (CTA) of patients who underwent EVT between January 2016 and December 2020...
March 16, 2023: Clinical Neuroradiology
Svenja Tafelmeier, Elisabeth Kesseler, Anca-Maria Iancu, Omid Nikoubashman, Martin Wiesmann
PURPOSE: To retrospectively evaluate the total complication rates and type of complications after diagnostic cerebral and spinal catheter angiography. METHODS: Data from 2340 patients undergoing diagnostic angiography over a period of 10 years in a neuroradiologic center were retrospectively evaluated. Local, systemic, neurological, and technical complications were analyzed. RESULTS: A total of 75 clinically noted complications occurred...
March 9, 2023: Clinical Neuroradiology
László Solymosi
No abstract text is available yet for this article.
March 8, 2023: Clinical Neuroradiology
Fatma Alkolfat, Aya Abdel Galeel, Ahmad R Bassiouny, Hany Eldeeb, Ahmed Radwan, Yasmine A Ashram
PURPOSE: Stroke is a principal cause of disability worldwide. In motor stroke, the tools for stratification and prognostication are plentiful. Conversely, in stroke causing mainly visual and cognitive problems, there is still no gold standard modality to use. The purpose of this study was to explore the fMRI recruitment pattern in chronic posterior cerebral artery (PCA) stroke patients and to investigate fMRI as a biomarker of disability in these patients. METHODS: The study included 10 chronic PCA stroke patients and another 10 age-matched volunteer controls...
March 3, 2023: Clinical Neuroradiology
Niklas Lützen, Enrique Barvulsky Aleman, Christian Fung, Juergen Beck, Horst Urbach
BACKGROUND AND PURPOSE: The diagnostic work-up in patients with spontaneous intracranial hypotension (SIH) and spinal longitudinal extradural CSF collection (SLEC) on magnetic resonance imaging (MRI) comprises dynamic digital subtraction myelography (dDSM) in prone position for leak detection. Dynamic computed tomography (CT) myelography (dCT-M) in prone position follows if the leak is not unequivocally located. A drawback of dCT‑M is a high radiation dose. This study evaluates the diagnostic needs of dCT-M examinations and measures to reduce radiation doses...
March 3, 2023: Clinical Neuroradiology
Michael Dieckmeyer, Nico Sollmann, Karina Kupfer, Maximilian T Löffler, Karolin J Paprottka, Jan S Kirschke, Thomas Baum
In 1971, the first computed tomography (CT) scan was performed on a patient's brain. Clinical CT systems were introduced in 1974 and dedicated to head imaging only. New technological developments, broader availability, and the clinical success of CT led to a steady growth in examination numbers. Most frequent indications for non-contrast CT (NCCT) of the head include the assessment of ischemia and stroke, intracranial hemorrhage and trauma, while CT angiography (CTA) has become the standard for first-line cerebrovascular evaluation; however, resulting improvements in patient management and clinical outcomes come at the cost of radiation exposure, increasing the risk for secondary morbidity...
March 2, 2023: Clinical Neuroradiology
Risto Grkovski, Leyla Acu, Uzeyir Ahmadli, Dominik Nakhostin, Patrick Thurner, Lorenz Wacht, Zsolt Kulcsár, Hatem Alkadhi, Sebastian Winklhofer
OBJECTIVE: To assess if a new dual-energy computed tomography (DECT) technique enables an improved visualization of ischemic brain tissue after mechanical thrombectomy in acute stroke patients. MATERIAL AND METHODS: The DECT head scans with a new sequential technique (TwinSpiral DECT) were performed in 41 patients with ischemic stroke after endovascular thrombectomy and were retrospectively included. Standard mixed and virtual non-contrast (VNC) images were reconstructed...
March 2, 2023: Clinical Neuroradiology
(no author information available yet)
No abstract text is available yet for this article.
March 2, 2023: Clinical Neuroradiology
Alexis Guédon, Thomas Checkouri, Matteo Fantoni, Vittorio Civelli, Marc-Antoine Labeyrie, Jean-Pierre Saint-Maurice, Fabrice Vallée, Emmanuel Houdart
BACKGROUND AND PURPOSE: Lateral sinus stenosis is the most common cause of venous pulsatile tinnitus (VPT). Stenting is an effective treatment after demonstration of a trans-stenotic pressure gradient; however, pressure measurement has many technical limitations. In 2018, a study showed that a combined approach with intravascular velocity measurement could be effective in identifying most appropriate candidates for stenting. The aim of the present study was to evaluate a new strategy using this biomarker for the indication of stenting even without a significant pressure gradient...
March 1, 2023: Clinical Neuroradiology
Shogo Shima, Shinsuke Sato, Bikei Ryu, Kazuki Kushi, Tatsuki Mochizuki, Tatsuya Inoue, Yoshikazu Okada, Yasunari Niimi
BACKGROUND: The functional outcomes in spinal cord arteriovenous shunts (SCAVSs) are usually unpredictable from current assessments of treatment results. We aimed to investigate and propose a new index marker, the vertebral blush (VB) sign, for assessing the treatment efficacy of SCAVSs. METHODS: This retrospective cohort study enrolled patients diagnosed with SCAVSs between June 2012 and May 2021. The VB sign was defined as the angiographic finding of reappearance or enhanced contrast staining of the vertebral bodies fed by shunt-related arteries observed after shunt occlusion...
March 1, 2023: Clinical Neuroradiology
S Remollo, M Werner, J Blasco, A López-Rueda, L San Roman, E Jimenez-Gomez, I Bravo Rey, P Vega, E Murias, S Rosati, C Pérez-García, E González, X Manso, S Aixut, O Chirife Chaparro, M Terceño, S Bashir, J M Pumar, E Ruiz-González, J C Méndez, Y Aguilar Tejedor, J Zamarro, M Castaño, P Daunis-I-Estadella, J Puig
INTRODUCTION: Combined stent-retriever/large-bore distal aspiration catheter (LB-DAC) thrombectomy was recently introduced to treat large-vessel occlusion; however, it is unclear whether larger inner diameters improve outcomes. We compared angiographic and clinical outcomes in patients with occlusions of the M1 segment of the middle cerebral artery treated with mechanical thrombectomy using extra-LB-DAC versus LB-DAC in combination with stent-retrievers. METHODS: We analyzed consecutive patients with M1 occlusion included in the ROSSETTI registry treated with non-balloon guide catheter combined LB-DAC/stent-retriever thrombectomy between June 2019 and April 2022...
March 1, 2023: Clinical Neuroradiology
Horst Urbach, Christian Scheiwe, Muskesh J Shah, Julia M Nakagawa, Marcel Heers, Maria Victoria San Antonio-Arce, Dirk-Matthias Altenmueller, Andreas Schulze-Bonhage, Hans-Juergen Huppertz, Theo Demerath, Soroush Doostkam
PURPOSE: To evaluate the diagnostic accuracy of epilepsy-dedicated 3 Tesla MRI including post-processing by correlating MRI, histopathology, and postsurgical seizure outcomes. METHODS: 3 Tesla-MRI including a magnetization-prepared two rapid acquisition gradient echo (MP2RAGE) sequence for post-processing using the morphometric analysis program MAP was acquired in 116 consecutive patients with drug-resistant focal epilepsy undergoing resection surgery...
March 1, 2023: Clinical Neuroradiology
Derrek Schartz, Taylor Furst, Nathaniel Ellens, Gurkirat Singh Kohli, Redi Rahmani, Sajal Medha K Akkipeddi, Tyler Schmidt, Tarun Bhalla, Thomas Mattingly, Matthew T Bender
PURPOSE: The utility of preoperative embolization (PE) of intracranial meningiomas is unclear and controversial. The aim of this study was to investigate the effect of PE on meningioma surgical resection by completing a meta-analysis of matched cohort studies. METHODS: A systematic review and meta-analysis of matched cohort studies was completed to evaluate the effect of PE on meningioma resection and outcomes. Outcome measures included: intraoperative blood loss, major surgical complications, total surgical complications including minor ones, total major complications including major surgical and embolization complications, total overall complications, and postoperative functional independence defined as modified Rankin Score (mRS) of 0-2...
February 28, 2023: Clinical Neuroradiology
B Simon, E Wogram, A T Camp, M Prinz, H Urbach, D Erny, C A Taschner
No abstract text is available yet for this article.
February 20, 2023: Clinical Neuroradiology
Nada Elsaid, Ahmed Razek, Nihal M Batouty, Ali H Elmokadem, Ahmed M Tawfik, Ahmed Saied
BACKGROUND: Based on increased understanding of the idiopathic intracranial hypertension (IIH) pathophysiology, venous sinus stenting (VSS) has emerged as an effective treatment for patients with transverse sinus stenosis (TSS). The presence of a reliable TSS screening tool is warranted. The combined conduit score (CCS) is the most widely used score for evaluation of the cerebral sinovenous stenosis in contrast-enhanced magnetic resonance venography (CE-MRV). PURPOSE OF THE STUDY: To evaluate the interobserver agreement between neuro-interventionalists and radiologists with respect to the CCS in evaluation of transverse sinus stenosis in patients with idiopathic intracranial hypertension using CE-MRV...
February 17, 2023: Clinical Neuroradiology
Tomas Dobrocky, Marco Matzinger, Eike I Piechowiak, Johannes Kaesmacher, Sara Pilgram-Pastor, Johannes Goldberg, David Bervini, Tomas Klail, Vitor Mendes Pereira, Werner Z'Graggen, Andreas Raabe, Pasquale Mordasini, Jan Gralla
Digital subtraction angiography provides excellent spatial and temporal resolution; however, it lacks the capability to depict the nonvascular anatomy of the brain and spinal cord.A review of the institutional database identified five patients in whom a new integrated fusion workflow of cross-sectional imaging and 3D rotational angiography (3DRA) provided important diagnostic information and assisted in treatment planning. These included two acutely ruptured brain arteriovenous malformations (AVM), a small superficial brainstem AVM after radiosurgery, a thalamic microaneurysm, and a spine AVM, and fusion was crucial for diagnosis and influenced further treatment...
February 6, 2023: Clinical Neuroradiology
Ludger Feyen, Marcus Katoh, Patrick Haage, Nico Münnich, Martin Weinzierl, Christian Blockhaus, Stefan Rohde, Helge C Kniep
PURPOSE: Whether patients presenting with mild stroke (NIHSS at admission < 6) should be treated with mechanical thrombectomy (MT) is the subject of an ongoing debate. This retrospective study based on large-scale clinical data aims to identify factors associated with favorable outcome (FO) in patients with mild stroke. METHODS: A total of 761 patients with mild stroke enrolled between 1 January 2020 and 31 December 2020 in the Quality Registry of the German Society for Neuroradiology were analyzed...
February 6, 2023: Clinical Neuroradiology
André Araújo, Francisca Guimarães, André Miguel Miranda, Marta Rodrigues, Sérgio Castro, Manuel Ribeiro
No abstract text is available yet for this article.
February 3, 2023: Clinical Neuroradiology
Sebastian Johannes Müller, Eya Khadhraoui, Dirk Voit, Christian Heiner Riedel, Jens Frahm, Javier M Romero, Marielle Ernst
PURPOSE: Diffusion-weighted imaging (DWI) is important for differentiating residual tumor and subacute infarctions in early postoperative magnetic resonance imaging (MRI) of central nervous system (CNS) tumors. In cases of pneumocephalus and especially in the presence of intraventricular trapped air, conventional echo-planar imaging (EPI) DWI is distorted by susceptibility artifacts. The performance and robustness of a newly developed DWI sequence using the stimulated echo acquisition mode (STEAM) was evaluated in patients after neurosurgical operations with early postoperative MRI...
February 2, 2023: Clinical Neuroradiology
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