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Clinical Neuroradiology

Akio Hiwatashi, Osamu Togao, Koji Yamashita, Kazufumi Kikuchi, Hiroshi Yoshikawa, Makoto Obara, Hiroshi Honda
PURPOSE: To differentiate cystic from solid solitary intraorbital tumors using 3D turbo field echo with diffusion-sensitized driven-equilibrium preparation without contrast material. MATERIALS AND METHODS: This retrospective study was approved by our institutional review boards, and written informed consent was waived. A total of 26 patients with intraorbital tumors were studied. Motion probing gradients were conducted at one direction with b‑values of 0 and 500 s/mm(2)...
January 17, 2017: Clinical Neuroradiology
S Prothmann, B Friedrich, T Boeckh-Behrens, C Zimmer, J Kaesmacher, K Lucia, C Maegerlein
PURPOSE: The aim of our study was the technical evaluation of a first pass approach of primary thrombus aspiration (AST) in patients with emergency large intracerebral vessel occlusions (ELVO) under routine clinical conditions. MATERIALS AND METHODS: We collected procedural and clinical data of 104 patients who underwent mechanical thrombectomy due to ELVO between June 2014 and January 2016 with intentional first-line thrombus aspiration. Procedures were conducted due to occlusions of the distal internal carotid artery, middle cerebral artery, anterior cerebral artery, basilar artery and posterior cerebral artery and were performed with the patient under either conscious sedation or general anesthesia...
January 12, 2017: Clinical Neuroradiology
Jong Kook Rhim, Young Dae Cho, Jin Pyeong Jeon, Dong Hyun Yoo, Won-Sang Cho, Hyun-Seung Kang, Jeong Eun Kim, Moon Hee Han
PURPOSE: Strategies for treating intracranial aneurysms of collateral vessels in adult onset moyamoya disease (MMD) remain unclear, because overall case numbers are limited and data on long-term outcomes are lacking. The aim of this study was to assess clinical and anatomic outcomes of such aneurysms in adult MMD sufferers who present with hemorrhage. METHODS: Of the 77 adult patients consecutively enrolled between January 2003 and December 2014 in the MMD registry at a single institution, those presenting with hemorrhage and followed for >12 months were studied...
December 13, 2016: Clinical Neuroradiology
Michio Fujimoto, Hiroshi Itokawa, Masao Moriya, Noriyoshi Okamoto, Jinichi Sasanuma
PURPOSE: Hyperperfusion syndrome (HPS) after carotid artery stenting (CAS) causes serious symptoms; therefore, early evaluation after CAS is considered to be important. Measurement of cerebral blood volume using C‑arm computed tomography (C-arm CBV) has recently become possible. Here, the usefulness of C‑arm CBV for the evaluation of hyperperfusion was investigated. METHODS: C-arm CBV was measured before and immediately after CAS in 30 patients. The regions of interest (ROI) were set in the bilateral middle cerebral artery perfused regions, and the affected/healthy side ratio of measured C‑arm CBV (CBV ratios) was determined to evaluate cerebral perfusion...
December 11, 2016: Clinical Neuroradiology
Pervinder Bhogal, Rosa Martinez, Oliver Gansladt, Hansjörg Bäzner, Hans Henkes, Marta Aguilar
PURPOSE: The optimal strategy for the treatment of M1 segment aneurysms has not yet been determined as both standard microneurosurgical and endovascular techniques can pose challenges. We sought to determine the efficacy of flow diverting stents to treat small, unruptured aneurysms of the M1 segment. METHODS: We retrospectively reviewed our database of prospectively collected information for all patients treated with flow diversion for an unruptured saccular aneurysm of the middle cerebral artery (MCA) between February 2009 and February 2016...
December 11, 2016: Clinical Neuroradiology
Bernd Eckert
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
(no author information available yet)
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
C A Taschner, R Sankowski, J M Shah, H Urbach, R Hartmann, M Prinz
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
Adam de Havenon, Scott McNally
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
Martin Bendszus, Götz Thomalla, Werner Hacke, Michael Knauth, Christian Gerloff, Susanne Bonekamp, Jens Fiehler
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
Jeremy Heit, Ian Connolly, Omar Choudhri
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
D T Ginat, L Ferro, M B Gluth
We describe the temporal bone computed tomography (CT) findings of an unusual case of branchio-oto-renal syndrome with ectopic ossicles that are partially located in the middle cranial fossa. We also describe quantitative temporal bone CT assessment pertaining to cochlear implantation in the setting of anomalous cochlear anatomy associated with this syndrome.
December 2016: Clinical Neuroradiology
A C-O Tsang, A Y-S Tang, W C Chung, G K-K Leung, K W Chow
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
M Marrale, G Collura, M Brai, N Toschi, F Midiri, G La Tona, A Lo Casto, C Gagliardo
In recent years many papers about diagnostic applications of diffusion tensor imaging (DTI) have been published. This is because DTI allows to evaluate in vivo and in a non-invasive way the process of diffusion of water molecules in biological tissues. However, the simplified description of the diffusion process assumed in DTI does not permit to completely map the complex underlying cellular components and structures, which hinder and restrict the diffusion of water molecules. These limitations can be partially overcome by means of diffusion kurtosis imaging (DKI)...
December 2016: Clinical Neuroradiology
C Wu, S Schnell, M Markl, S A Ansari
No abstract text is available yet for this article.
December 2016: Clinical Neuroradiology
S Tsutsumi, M Hori, H Ono, T Tabuchi, S Aoki, Y Yasumoto
BACKGROUND AND PURPOSE: The infundibular recess (IR), commonly illustrated as a V-shaped hollow in the sagittal view, is recognized as a small extension of the third ventricle into the pituitary stalk. The precise morphology of the human IR is unknown. The present study sought to delineate the morphology of the IR using magnetic resonance imaging. MATERIALS AND METHODS: Subjects included 100 patients without acute cerebral infarcts, intracranial hemorrhage, intrasellar or suprasellar cysts, hydrocephalus, inflammatory disease, or brain tumors...
December 2016: Clinical Neuroradiology
S Siemonsen, K L Young, M Bester, J Sedlacik, C Heesen, J Fiehler, J-P Stellmann
PURPOSE: Phase imaging provides additional information on multiple sclerosis (MS) lesions and may in combination with mean diffusivity (MD) and magnetization transfer ratio (MTR) help differentiating heterogeneity of MS lesion pathology. METHODS: Magnetic resonance imaging (MRI) was performed in 23 MS patients including diffusion tensor imaging (DTI), magnetization transfer imaging (MTI), and SWI. Mean values (MTR, MD, and homodyne filtered phase) from 138 chronic MS lesions and normal appearing white matter (NAWM) were obtained and correlations examined...
December 2016: Clinical Neuroradiology
J U Regula, L Jestaedt, F Jende, A Bartsch, H-M Meinck, M-A Weber
OBJECTIVE: The objective of this study was to evaluate the clinical usefulness of whole-body magnetic resonance imaging (MRI) in facio-scapulo-humeral muscular dystrophy (FSHD). METHODS: In 20 patients with genetically proven FSHD1, we prospectively assessed muscular involvement and correlated the results of semi-quantitative manual muscle testing and other parameters such as disease duration, creatine kinase (CK) levels and repeat length of the D4Z4 locus with whole-body MRI...
December 2016: Clinical Neuroradiology
S Kurtcan, A Alkan, R Kilicarslan, A A Bakan, H Toprak, A Aralasmak, F Aksoy, A Kocer
PURPOSE: In the studies concerning the pathology of the auditory pathway in the vestibulocochlear system, few use advanced neuroimaging applications of magnetic resonance imaging (MRI) such as diffusion tensor imaging (DTI). Those who did use reported DTI changes only at the lateral lemniscus and inferior colliculus level. The aim of our study was to determine diffusion changes in the bilateral auditory pathways of subjects with unilateral acoustic neuroma (AN) and compare them with healthy controls...
December 2016: Clinical Neuroradiology
J-M Jia, H Guo, W-J Huo, S-W Hu, F He, X-D Sun, G-J Lin
PURPOSE: The purpose of this study was to investigate and evaluate the accuracy and the preoperative diagnostic value of high-resolution magnetic resonance imaging (MRI) techniques, three-dimensional time-of-flight (3D-TOF) and three-dimensional constructive interference in steady state (3D-CISS) sequence, solely or in combination for the detection of the relationship between the facial nerve and adjacent vessels in patients with hemifacial spasm (HFS). METHODS: A total of 95 patients with primary HFS were subject to 3D-TOF and 3D-CISS MRI...
December 2016: Clinical Neuroradiology
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