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Clinical Neuroradiology

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https://www.readbyqxmd.com/read/28623378/carotid-stenting-in-neuroradiology-a%C3%A2-short-journey-from-the-past-to-current-debates
#1
REVIEW
Joachim Berkefeld, Marlies Wagner, Richard du Mesnil
After a period of stagnation due to negative results of randomized trials for patients with symptomatic stenosis, the relevance of carotid artery stenting (CAS) is increasing again. CAS has become an important and evidence-based part of interventional stroke treatment. Our ability to manage acute recanalization of carotid occlusions and other niche indications properly led some skeptical neurologists to trust in carotid intervention for elective cases as well. The evolution of CAS from initial euphoria to more realistic views under consideration of trial results and guidelines is reviewed...
June 16, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28589484/longitudinal-volume-quantification-of-deep-medullary-veins-in-patients-with-cerebral-venous-sinus-thrombosis-venous-volume-assessment-in-cerebral-venous-sinus-thrombosis-using-swi
#2
A K Dempfle, A Harloff, F Schuchardt, J Bäuerle, S Yang, H Urbach, K Egger
PURPOSE: Susceptibility-weighted imaging (SWI) visualizes small cerebral veins with high sensitivity and could, thus, enable quantification of hemodynamics of deep medullary veins. We aimed to evaluate volume changes of deep medullary veins in patients with acute cerebral venous sinus thrombosis (CVST) over time in comparison to healthy controls. METHODS: All magnetic resonance imaging (MRI) experiments were executed at 3 T using a 32-channel head coil. Based on SWI and semiautomatic postprocessing (statistical parametric mapping [SPM8] and ANTs), the volume of deep medullary veins was quantified in 14 patients with acute CVST at baseline and the 6‑month follow-up, as well as in 13 healthy controls undergoing repeated MRI examination with an interscan interval of at least 1 month...
June 6, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28577042/intra-suprasellar-schwannoma-presumably-originating-from-the-internal-carotid-artery-wall-case-report-and-review-of-the-literature
#3
Sohi Bae, Sung Soo Ahn, Jong Hee Chang, Se Hoon Kim
Intracranial schwannomas are common but intra-suprasellar schwannomas are extremely rare. We represent the case of a 57-year-old woman with an intra-suprasellar tumor that was presurgically diagnosed as an anterior clinoidal meningioma. Intraoperatively it adhered tightly to the internal carotid artery wall and could not easily be dissected, possibly leading to profuse hemorrhage and sacrifice of the carotid artery with coil embolization. Histopathology demonstrated a schwannoma. We reviewed and summarized the clinical, imaging, and intraoperative findings of previously reported intra-suprasellar schwannomas...
June 2, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28573334/retrieval-of-migrated-volume-coils-using-different-clot-retrievers-in-a%C3%A2-porcine-model
#4
Andreas Simgen, Toshiki Tomori, Ruben Mühl-Benninghaus, Hagen Bomberg, Umut Yilmaz, Heiko Körner, Matthias W Laschke, Michael D Menger, Wolfgang Reith
PURPOSE: During endovascular treatment of intracranial aneurysms using coils, migration is a serious complication that increases neurological morbidity. The aim of this experimental study was to assess the effectiveness and complications of retrieving volume coils with different, currently available clot retrievers in a porcine model. METHODS: Volume coils of three-dimensional (3D) shape and different sizes were placed in the axillary artery of pigs. By means of 4 different clot retrievers (Trevo ProVue; Solitaire FR; 3D-Separator; ERIC) a total of 40 retrieval maneuvers (10 per retriever) were performed by deploying the retrievers within the migrated coils and trying to trap parts of the coils by advancing the microcatheter...
June 1, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28536753/differentiation-of-clot-composition-using-conventional-and-dual-energy-computed-tomography
#5
Jan Borggrefe, Jonathan Kottlors, Mahmood Mirza, Victor-Frederic Neuhaus, Nuran Abdullayev, Volker Maus, Christoph Kabbasch, David Maintz, Anastasios Mpotsaris
BACKGROUND AND PURPOSE: In unenhanced computed tomography (CT) of acute ischemic stroke, the density of occluding clots is associated with the content of red blood cells and successful recanalization with stent thrombectomy. However, no CT marker for fibrin content is established. In order to improve clot diagnostics, we conducted an in vitro study to investigate thrombus composition of histologically defined ovine blood clots with unenhanced and contrast-enhanced CT using spectral detector CT (SDCT)...
May 23, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28523386/tarlov-cyst-hemorrhage-causing-acute-radiculopathy-a%C3%A2-case-report
#6
Tim Godel, Mirko Pham, Matthias Wolff, Martin Bendszus, Philipp Bäumer
No abstract text is available yet for this article.
May 18, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28509936/penetrating-osseous-spicules-causing-high-flow-ventral-csf-leaks-in-the-setting-of-relatively-low-bmi-a%C3%A2-preliminary-study
#7
Richard E Rosebrock, Felix E Diehn, Patrick H Luetmer, John T Wald, John I Lane, Jonathan M Morris, Vance T Lehman, Carrie M Carr, Bahram Mokri, Kent R Thielen
OBJECTIVE/BACKGROUND: We have anecdotally observed patients with high-flow ventral cerebrospinal fluid (CSF) leaks resulting from penetrating osseous spicules or calcified discs to be relatively thin. The purpose of this study was to explore the validity of this observation and determine if a potential association exists between low body mass index (BMI) and high-flow spinal ventral CSF leaks resulting from such dura-penetrating lesions. METHODS: Sixteen consecutive patients with precisely localized high-flow ventral spinal CSF leaks on dynamic myelography were identified...
May 16, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28509935/utilization-of-bone-wax-as-a%C3%A2-marker-for-spatial-orientation-in-intraoperative-magnetic-resonance-imaging
#8
Pinar Celtikci, Emrah Celtikci, Hakan Emmez, Murat Ucar, Alp Özgün Börcek
No abstract text is available yet for this article.
May 16, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28508117/single-center-experience-using-the-3max-reperfusion-catheter-for-the-treatment-of-acute-ischemic-stroke-with-distal-arterial-occlusions
#9
Kévin Premat, Bruno Bartolini, Flore Baronnet-Chauvet, Eimad Shotar, Vincent Degos, Paul Muresan, Federico Di Maria, Joseph Gabrieli, Charlotte Rosso, Silvia Pistocchi, Jacques Chiras, Nader Sourour, Sonia Alamowitch, Yves Samson, Frédéric Clarençon
PURPOSE: Most recent guidelines recommend the use of stent retriever devices in endovascular treatment of acute ischemic stroke with large vessel occlusion (LVO). Recently published data reported convincing results with thromboaspiration devices such as the Penumbra System (Penumbra, Alameda, CA, USA) combined with supple reperfusion catheters by using the ADAPT (A Direct Aspiration First-Pass Thrombectomy) technique. The aim of this study was to report our initial experience with the 3MAX (3...
May 15, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28500438/joint-annual-meeting-2017-bern-expo-bern-switzerland-8-9-june-2017
#10
(no author information available yet)
No abstract text is available yet for this article.
May 12, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28488025/in-stent-stenosis-after-p64-flow-diverter-treatment
#11
M Aguilar Pérez, P Bhogal, E Henkes, O Ganslandt, H Bäzner, H Henkes
PURPOSE: There is limited information available on the incidence of in-stent stenosis (ISS) secondary to the use of flow-diverting stents in the intracranial vasculature. We sought to determine the incidence, severity, and clinical course of ISS on angiographic follow-up after treatment of saccular aneurysms with p64. METHODS: We retrospectively reviewed all patients who underwent treatment of a saccular (ruptured and unruptured) intracranial aneurysm with ≥1 p64 between 2011 and 2015...
May 9, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28488024/glioma-grading-and-determination-of-idh-mutation-status-and-atrx-loss-by-dce-and-asl-perfusion
#12
Cornelia Brendle, Johann-Martin Hempel, Jens Schittenhelm, Marco Skardelly, Ghazaleh Tabatabai, Benjamin Bender, Ulrike Ernemann, Uwe Klose
PURPOSE: To evaluate arterial spin labeling (ASL) perfusion and dynamic contrast-enhanced (DCE) perfusion in glioma grading according to the previous WHO classification of 2007, as well as concerning isocitrate dehydrogenase (IDH) mutation status and ATRX expression as required by the new WHO 2016 brain tumor classification. METHODS: The mean values of Ktrans, Kep, Ve, and Vp by DCE perfusion, and cerebral blood flow (CBF) by ASL perfusion were assessed retrospectively in 40 patients with initial glioma diagnosis...
May 9, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28484829/societies-communications
#13
(no author information available yet)
No abstract text is available yet for this article.
May 8, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28477181/freiburg-neuropathology-case-conference-widespread-white-matter-lesions-in-a%C3%A2-patient-with-progressive-paraparesis-and-cortical-blindness
#14
C A Taschner, P Süß, B Sajonz, H Urbach, C P Simon-Gabriel, M Prinz
No abstract text is available yet for this article.
May 5, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28477180/value-of-flat-detector-computed-tomography-angiography-with-intravenous-contrast-media-injection-in-the-evaluation-and-treatment-of-acutely-ruptured-aneurysms-of-the-acoma-complex-a%C3%A2-single-center-experience-in-15%C3%A2-cases
#15
Julie Rösch, Stefan Lang, Philipp Gölitz, Bernd Kallmünzer, Karl Rössler, Arnd Doerfler, Tobias Struffert
OBJECTIVE: To illustrate the added value of flat-detector computed tomography angiography with intravenous contrast media injection (intravenous FDCTA) in the evaluation of complex A1/A2/AcomA aneurysms. PATIENTS AND METHODS: We retrospectively reviewed 15 patients with ruptured aneurysms. In each patient, an intravenous FDCTA was performed and its diagnostic value investigated. RESULTS: In all patients, FDCTA contributed relevant additional information concerning the anatomy of the A1/A2/AcomA complex and the relationship of the aneurysm neck to these vascular structures, which could not be gained by 2D- and 3D-DSA, and changed the management in 33% of the patients (5 out of 15)...
May 5, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28477179/contribution-of-qsm-imaging-to-the-diagnosis-of-the-rare-syndrome-of-leukoencephalopathy-with-cysts-and-calcification-lcc
#16
Peter Raab, Martin Stangel, Heinrich Lanfermann
We describe the typical computed tomography (CT) and magnetic resonance imaging (MRI) characteristics in a rare case of adult leukoencephalopathy with calcifications and cysts (LCC). In addition, we describe the specific findings of quantified susceptibility mapping (QSM) in this case, relate it to known histopathological findings, and point out possible advantages of this method.
May 5, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28470350/emerging-challenges-for-neuroradiologists
#17
EDITORIAL
Horst Urbach
No abstract text is available yet for this article.
May 3, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28466127/incidence-of-tumour-progression-and-pseudoprogression-in-high-grade-gliomas-a%C3%A2-systematic-review-and-meta-analysis
#18
Abdul W Abbasi, Henriette E Westerlaan, Gea A Holtman, Kamal M Aden, Peter Jan van Laar, Anouk van der Hoorn
BACKGROUND: High-grade gliomas are the most common primary brain tumours. Pseudoprogression describes the false appearance of radiation-induced progression on MRI. A distinction should be made from true tumour progression to correctly plan treatment. However, there is wide variation of reported pseudoprogression. We thus aimed to establish the incidence of pseudoprogression and tumour progression in high-grade glioma patients with a systematic review and meta-analysis. METHODS: We searched PubMed, Embase and Web of Science on the incidence of pseudoprogression and tumour progression in adult high-grade glioma patients from 2005, the latest on 8 October 2014...
May 2, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28466126/uncommon-cranial-meningioma-key-imaging-features-on-conventional-and-advanced-imaging
#19
REVIEW
Nader Zakhari, Carlos Torres, Mauricio Castillo, Thanh B Nguyen
Given the high incidence of intracranial meningiomas encountered in clinical practice, it is not uncommon to find rare subtypes of meningioma, with unusual imaging findings. These commonly represent a diagnostic challenge. In this article, we review the imaging appearance of typical meningioma on conventional and advanced imaging as well as the key imaging features of multiple uncommon subtypes: cystic, microcystic, lipomatous, chordoid, angiomatous, intraosseous, extracranial, atypical/malignant, and tumor-to-tumor metastasis (also known as collision tumors)...
May 2, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28447147/diffusion-kurtosis-as-an-in-vivo-imaging-marker-of-early-radiation-induced-changes-in-radiation-induced-temporal-lobe-necrosis-in-nasopharyngeal-carcinoma-patients
#20
Lu Liyan, Wang Si, Wang Qian, Shao Yuhui, Wei Xiaoer, Li Yuehua, Li Wenbin
PURPOSE: Diffusion kurtosis imaging (DKI), an extension of the popular diffusion tensor imaging (DTI) model, has been applied in clinical studies of brain tissue changes. We explored the value of DKI for the early detection of radiation-induced changes in temporal lobe necrosis (TLN) after radiotherapy (RT) for nasopharyngeal carcinoma (NPC). METHODS: A total of 400 patients with NPC were retrospectively enrolled; all participants underwent MRI scans 0-7 days before RT, at 4 weeks during RT, and 1 month after completing RT...
April 26, 2017: Clinical Neuroradiology
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