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Clinical Neuroradiology

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https://www.readbyqxmd.com/read/29460142/investigation-of-neurodegenerative-processes-in-amyotrophic-lateral-sclerosis-using-white-matter-fiber-density
#1
Philipp Stämpfli, Stefan Sommer, David Czell, Sebastian Kozerke, Christoph Neuwirth, Markus Weber, Sabine Sartoretti-Schefer, Erich Seifritz, Andreas Gutzeit, Carolin Reischauer
In the current work two novel parameters, fiber density (FD) and mean diffusion signal (MDS) are investigated for evaluating neurodegenerative processes in amyotrophic lateral sclerosis (ALS). The MDS provides a measure of the FD but is derived directly from the diffusion signal. Using tract-based spatial statistics (TBSS), pathological changes across the entire white matter and changes in the parameters over time were evaluated. The results were related to those obtained using the fractional anisotropy (FA) value...
February 19, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29460141/complete-restitution-of-the-ischemic-penumbra-after-successful-thrombectomy-a-pilot-study-using-quantitative-mri
#2
Alexander Seiler, Arne Lauer, Ralf Deichmann, Ulrike Nöth, Se-Jong You, Waltraud Pfeilschifter, Oliver C Singer, Ulrich Pilatus, Marlies Wagner
PURPOSE: Endovascular thrombectomy is highly effective in patients with proximal large artery occlusion but the relevance of reperfusion injury after recanalization is a matter of debate. The aim of this study was to investigate potential residual metabolic distress and microstructural tissue damage or edema after reperfusion using quantitative oxygen-sensitive T2' and T2-mapping in patients successfully treated by thrombectomy. METHODS: Included in this study were 11 patients (mean age 70 ± 11...
February 19, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29427029/mri-findings-of-adult-onset-orbital-xanthogranulomatous-disease-a-case-report
#3
Joo Kyung Sim, Ji Ye Lee, Sun Young Jang, Susie Chin
No abstract text is available yet for this article.
February 9, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29417155/diagnosing-neoplastic-hematoma-role-of-mr-perfusion
#4
Jai Jai Shiva Shankar, Namita Sinha
BACKGROUND: The imaging appearance of neoplastic hematoma can be complicated by the presence of a large hematoma, even on magnetic resonance imaging (MRI). We describe the role of MR perfusion (MRP) in detecting neoplastic hematomas in patients with intraparenchymal hematoma (IPH). MATERIAL AND METHODS: A retrospective review was performed for consecutive patients with IPH, where MRP was performed. Routine, post-gadolinium MRI and MRP were analyzed. All patients were either operated on for evacuation of IPH or followed up on imaging...
February 7, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29417154/frankfurt-is-calling
#5
EDITORIAL
Martin Wiesmann
No abstract text is available yet for this article.
February 7, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29404621/endovascular-treatment-of-dural-arteriovenous-fistulas-of-the-anterior-or-posterior-condylar-vein-a-cadaveric-and-clinical-study-and-literature-review
#6
V Hellstern, M Aguilar-Pérez, S Schob, P Bhogal, M AlMatter, P Kurucz, A Grimm, H Henkes
Dural arteriovenous fistulas (DAVF) involving the anterior and posterior condylar vein at the skull base are rare but important to recognize. Due to the highly variable anatomy of the venous system of the skull base, detailed anatomical knowledge is essential for correct diagnosis and appropriate treatment of these lesions. In this report we review the normal anatomy of the condylar veins and describe rare and, to our knowledge, not previously reported anatomical variants. We also highlight the treatment modalities for these lesions with focus on the endovascular transvenous occlusion based on four consecutive cases from our center...
February 5, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29392347/diffusion-tensor-imaging-of-dystrophic-skeletal-muscle-comparison-of-two-segmentation-methods-adapted-to-chemical-shift-encoded-water-fat-mri
#7
S Keller, Z J Wang, A Aigner, A C Kim, A Golsari, H Kooijman, G Adam, J Yamamura
PURPOSE: To compare the influence of two different regions of interest (ROIs) on diffusion tensor metrics in dystrophic thigh muscles using a custom-made (whole muscle) ROI including and a selective ROI excluding areas of fatty replacement. METHODS: Diffusion tensor imaging (DTI) and chemical-shift-encoded water-fat magnetic resonance imaging (MRI) of the thigh was conducted on a 3-Tesla system in 15 cases with muscular dystrophy and controls. The ROIs were chosen according to patterns of fatty replacement on co-registered axial DTI and gradient echo sequence (GRE) images...
February 1, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29392346/freiburg-neuropathology-case-conference-tumor-located-in-the-anterior-portion-of-the-third-ventricle
#8
C A Taschner, P Süß, M Hohenhaus, H Urbach, N Lützen, M Prinz
No abstract text is available yet for this article.
February 1, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29387893/cnr-1-18-societies-communications
#9
(no author information available yet)
No abstract text is available yet for this article.
January 31, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29379980/subtle-imaging-findings-aid-the-diagnosis-of-adolescent-hereditary-spastic-paraplegia-and-ataxia
#10
Franca Wagner, David S Titelbaum, Renate Engisch, Emily K Coskun, Jeff L Waugh
PURPOSE: Hereditary spastic paraplegia (HSP) and hereditary spastic ataxia (HSA) are a heterogeneous group of genetic disorders characterized by progressive lower limb spasticity resulting from pyramidal tract dysfunction. By identifying critical imaging findings within the clinical context of spasticity, radiologists are uniquely positioned to recommend specific genetic testing, and thus facilitate diagnosis. METHODS: We present two examples of HSP and HSA that had gone clinically unrecognized for years, and in which magnetic resonance imaging played a critical role in the diagnosis...
January 29, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29374294/imaging-of-spontaneous-and-traumatic-cervical-artery-dissection-comparison-of-typical-ct-angiographic-features
#11
Peter B Sporns, Thomas Niederstadt, Walter Heindel, Michael J Raschke, René Hartensuer, Ralf Dittrich, Uta Hanning
INTRODUCTION: Cervical artery dissection (CAD) is an important etiology of ischemic stroke and early recognition is vital to protect patients from the major complication of cerebral embolization by administration of anticoagulants. The etiology of arterial dissections differ and can be either spontaneous or traumatic. Even though the historical gold standard is still catheter angiography, recent studies suggest a good performance of computed tomography angiography (CTA) for detection of CAD...
January 26, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29362831/various-cranial-and-orbital-imaging-findings-in-pediatric-abusive-and-non-abusive-head-trauma-and-relation-to-outcomes
#12
Mehmet Gencturk, Huseyin Gurkan Tore, David R Nascene, Lei Zhang, Yasemin Koksel, Alexander M McKinney
BACKGROUND AND PURPOSE: Differentiating Abusive Head Trauma (AHT) from Non-abusive Head trauma (NAHT) has profound clinical prognostic and legal implications, as certain imaging findings can individually be more suggestive of NAHT, while others are more suggestive of AHT. This study was set out to evaluate for an association between the various imaging findings in AHT with outcome. MATERIAL AND METHODS: Over 7-years, 55 children (age 0-4 years') with head trauma and magnetic resonance imaging (MRI) were included as either: abusive (n = 16), non-abusive (n = 35), or indeterminate (n = 4)...
January 23, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29322233/high-isotropic-resolution-t2-mapping-of-the-lumbosacral-plexus-with-t2-prepared-3d-turbo-spin-echo
#13
Nico Sollmann, Dominik Weidlich, Barbara Cervantes, Elisabeth Klupp, Carl Ganter, Hendrik Kooijman, Ernst J Rummeny, Claus Zimmer, Jan S Kirschke, Dimitrios C Karampinos
PURPOSE: Isotropic high-resolution three-dimensional (3D) magnetic resonance neurography (MRN) is increasingly used to depict even small and highly oblique nerves of the lumbosacral plexus (LSP). The present study introduces a T2 mapping sequence (T2-prepared 3D turbo spin echo) that is B1-insensitive and enables quantitative assessment of LSP nerves. METHODS: In this study 15 healthy subjects (mean age 28.5 ± 3.8 years) underwent 3 T MRN of the LSP area three times...
January 10, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29322232/mechanical-thrombectomy-using-the-new-solitaire%C3%A2-platinum-stent-retriever-reperfusion-results-complication-rates-and-early-neurological-outcome
#14
Johannes Pfaff, Stefan Rohde, Tobias Engelhorn, Arnd Doerfler, Martin Bendszus, Markus Alfred Möhlenbruch
BACKGROUND AND PURPOSE: The application of radiopaque markers to the Solitaire™ stent-retriever for better visibility during mechanical thrombectomy (MT) has the potential to alter the well-known characteristics of the device; however, it is uncertain whether this adjustment influences efficacy or safety of the enhanced stent-retriever. METHODS: Retrospective analysis of stroke databases of three comprehensive stroke centers. Our investigation was focused on technical and angiographic parameters, including procedure times, reperfusion results (thrombolysis in cerebral infarction, TICI), periprocedural complications and favorable early neurological recovery at discharge (modified Rankin scale ≤2 or National Institutes of Health Stroke Scale, NIHSS = 0 or ∆NIHSS ≥ 10), from consecutive patients with acute anterior circulation ischemic stroke treated with a Solitaire™ Platinum stent-retriever between October 2016 and March 2017...
January 10, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29318353/the-barrel-vascular-reconstruction-device-a%C3%A2-retrospective-observational-multicentric-study
#15
C Kabbasch, A Mpotsaris, V Maus, J C Altenbernd, C Loehr
BACKGROUND AND PURPOSE: The Barrel device is an electrolytically detachable laser cut, closed-cell microstent that is used for neck reconstruction in wide-necked bifurcation and branching aneurysms to support coiling. The key feature is a barrel section that herniates over the aneurysmal ostium. The objective was to evaluate the safety, feasibility and the immediate and mid-term occlusion results of this new device. MATERIAL AND METHODS: The databases of two tertiary care centers were screened for all Barrel-based stent-assisted intracranial coil embolization of wide-necked aneurysms between June 2015 and September 2016...
January 9, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29318352/morphometry-of-the-hand-knob-region-and-motor-function-change-in-eloquent-area-glioma-patients
#16
Liang Jingshan, Fang Shengyu, Fan Xing, Wang Zheng, Zhang Chuanbao, Qian Zenghui, Liu Xing, Sun Lihua, Li Guanzhang, Yang Fuqiang, Jin Shuai, Wang Yinyan, Jiang Tao
PURPOSE: The hand knob area is the cortical representation of motor hand function. The current study aimed to investigate the effects of eloquent area gliomas on the morphometry of the hand motor cortex and preoperative hand motor function. METHODS: A retrospective study of 320 glioma patients was conducted. Seventy-eight patients with gliomas involving motor functional area were finally enrolled. Using axial T2-weight magnetic resonance images, the width and height of the hand knob were measured in both hemispheres, and differences were compared between the affected and unaffected hemispheres...
January 9, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29318351/correction-to-mechanical-thrombectomy-in-basilar-artery-occlusion-presence-of-bilateral-posterior-communicating-arteries-is-a-predictor-of-favorable-clinical-outcome
#17
Volker Maus, Alev Kalkan, Christoph Kabbasch, Nuran Abdullayev, Henning Stetefeld, Utako Birgit Barnikol, Thomas Liebig, Christian Dohmen, Gereon Rudolf Fink, Jan Borggrefe, Anastasios Mpotsaris
Correction to: Clin Neuroradiol 2017 https://doi.org/10.1007/s00062-017-0651-3 The original version of this article unfortunately contained a mistake. The presentation of Fig. 2 was incorrect. The corrected figure is given ….
January 9, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29313057/regional-differences-in-thrombectomy-rates-secondary-use-of-billing-codes-in-the-miracum-medical-informatics-for-research-and-care-in-university-medicine-consortium
#18
Christian Haverkamp, Thomas Ganslandt, Petar Horki, Martin Boeker, Arnd Dörfler, Stefan Schwab, Joachim Berkefeld, Waltraud Pfeilschifter, Wolf-Dirk Niesen, Karl Egger, Manfred Kaps, Marc A Brockmann, Eva Neumaier-Probst, Kristina Szabo, Martin Skalej, Siegfried Bien, Christoph Best, Hans-Ulrich Prokosch, Horst Urbach
BACKGROUND AND PURPOSE: Mechanical thrombectomy, in addition to intravenous (i.v.) thrombolysis is recommended for treatment of acute stroke in patients with large vessel occlusions (LVO) in the anterior circulation up to 6 h after symptom onset. We compared thrombectomy rates of eight university hospitals of the MIRACUM consortium to analyze the implementation of this guideline in clinical routine. METHODS: Anonymized billing data in a standardized format were loaded into a local i2b2 data warehouse by applying already existing extract, transform and load (ETL) routines...
January 8, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29299614/cortical-and-subcortical-morphometric-and-iron-changes-in-relapsing-remitting-multiple-sclerosis-and-their-association-with-white-matter-t2%C3%A2-lesion-load-a%C3%A2-3-tesla-magnetic-resonance-imaging-study
#19
Ali Al-Radaideh, Imad Athamneh, Hadeel Alabadi, Majed Hbahbih
INTRODUCTION: This study was carried out to investigate the global and regional morphometric and iron changes in grey matter (GM) of multiple sclerosis (MS) patients and link them to the white matter (WM) lesions in a multimodal magnetic resonance imaging approach. MATERIAL AND METHODS: The study involved 30 relapsing-remitting MS (RRMS) patients along with 30 age-matched healthy controls (HC) who were scanned on a 3T Siemens Trio system. The scanning protocol included a 3D, high resolution T1, T2, and T2*-weighted sequences...
January 3, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29297102/endovascular-stroke-treatment-on-single-plane-vs-bi-plane-angiography-suites-technical-considerations-and-evaluation-of-treatment-success
#20
Benjamin Friedrich, Christian Maegerlein, Donald Lobsien, Sebastian Mönch, Maria Berndt, Dennis Hedderich, Silke Wunderlich, Dominik Michalski, Manuel Lehm, Tobias Boeckh-Behrens, Claus Zimmer, Kornelia Kreiser
INTRODUCTION: Endovascular stroke therapy is mostly available in comprehensive stroke centers with state of the art bi-plane angiography suites. The aim of the present study was to analyze if it is justifiable to treat patients with alternative x‑ray machines in the case of capacity constraints, or if it is mandatory to refer patients in such cases. Secondly, we wanted to draw conclusions for the feasibility of different logistic approaches in stroke treatment, such as a "helistroke" concept...
January 2, 2018: Clinical Neuroradiology
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