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https://www.readbyqxmd.com/read/29932382/microsurgical-treatment-of-unruptured-middle-cerebral-artery-aneurysms-a-large-contemporary-experience
#1
Eric S Nussbaum, Michael T Madison, James K Goddard, Jeffrey P Lassig, Kevin M Kallmes, Leslie A Nussbaum
OBJECTIVE Advances in endovascular therapy for the treatment of middle cerebral artery (MCA) aneurysms have led to scrutiny of its benefits compared with microsurgical repair. To provide information regarding complication rates and outcomes, the authors reviewed the results of a large series of unruptured MCA aneurysms treated with open microsurgery. METHODS The authors included all patients who underwent surgical repair of an unruptured MCA aneurysm between 1997 and 2015. All surgical procedures, including clipping, wrapping, bypass, and parent artery occlusion, were performed by a single neurosurgeon...
June 22, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29932376/sagittal-splitting-of-the-temporalis-muscle-for-encephalo-myo-synangiosis-to-prevent-ischemic-complications-due-to-a-swollen-temporalis-muscle-without-inhibiting-collateral-developments-in-patients-with-moyamoya-disease
#2
Toshio Machida, Yoshinori Higuchi, Shigeki Nakano, Masaki Izumi, Satoshi Ishige, Atsushi Fujikawa, Yuichi Akaogi, Junichiro Shimada, Junichi Ono
OBJECTIVE Encephalo-myo-synangiosis (EMS) is an effective revascularization procedure for the treatment of moyamoya disease (MMD). However, the temporalis muscle used for EMS sometimes swells and causes ischemic complications by compressing the underlying brain. This study aimed to elucidate the effect of sagittal splitting (SS) of the muscle for prevention of ischemic complications and its impact on the postoperative development of collateral vessels. METHODS In this historical case-control study, we analyzed 60 hemispheres in adult patients with MMD who underwent EMS using the temporalis muscle from December 1998 to November 2017...
June 22, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29930211/-hyperperfusion-after-revascularization-for-quasi-moyamoya-disease-associated-with-graves-disease-a-case-report
#3
Koji Shimonaga, Takafumi Mitsuhara, Masahiro Hosogai, Tomohiro Kawasumi
We report a case of cerebral hyperperfusion syndrome accompanied by postoperative intracerebral hemorrhage following blood flow reconstruction for quasi-moyamoya disease associated with Graves' disease that had caused cerebral infarctions. A 44-year-old woman presented with repeated sensory impairment of the fingers on the left hand and weakness of the right lower limb and multiple cerebral infarctions developed in the bilateral frontal lobes. Magnetic resonance angiography and cerebral angiography suggested quasi-moyamoya disease...
June 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29930210/-unruptured-arteriosclerotic-aneurysm-in-the-distal-middle-cerebral-artery-a-case-report
#4
Takayuki Anno, Nobuyuki Kobayashi, Takehiko Yamaguchi
We report a rare case of an unruptured cerebral aneurysm in the left distal middle cerebral artery(MCA). A 76-year-old woman was referred to our department for unruptured cerebral aneurysms detected incidentally by magnetic resonance angiography. A left carotid angiogram revealed a saccular aneurysm arising in an arterial trunk unrelated to the branching zone of the distal MCA. The patient underwent an operation for trapping and excision of the saccular aneurysm in the distal MCA followed by end-to-end anastomosis...
June 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29929053/curvelet-transform-based-volume-fusion-for-correcting-signal-loss-artifacts-in-time-of-flight-magnetic-resonance-angiography-data
#5
Ahmadreza Baghaie, Susanne Schnell, Ali Bakhshinejad, Mojtaba F Fathi, Roshan M D'Souza, Vitaliy L Rayz
Flow fields in cerebral aneurysms can be measured in vivo with phase-contrast MRI (4D Flow MRI), providing 3D anatomical magnitude images as well as 3-directional velocities through the cardiac cycle. The low spatial resolution of the 4D Flow MRI data, however, requires the images to be co-registered with higher resolution angiographic data for better segmentation of the blood vessel geometries to adequately quantify relevant flow descriptors such as wall shear stress or flow residence time. Time-of-Flight Magnetic Resonance Angiography (TOF MRA) is a non-invasive technique for visualizing blood vessels without the need to administer contrast agent...
June 15, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29922933/multidetector-ct-angiography-of-the-circle-of-willis-association-of-its-variants-with-carotid-artery-disease-and-brain-ischemia
#6
Andrea Varga, Giovanni Di Leo, Péter Vince Banga, Csaba Csobay-Novák, Márton Kolossváry, Pál Maurovich-Horvat, Kálmán Hüttl
PURPOSE: (1) to estimate the prevalence of Circle of Willis (CoW) variants in patients undergoing carotid endarterectomy, (2) to correlate these variants to controls and (3) cerebral ischemia depicted by computed tomography (CT). MATERIALS AND METHODS: After Institutional Review Board approval, data of 544 carotid endarterectomy patients (331 males, mean age 69±8 years) and 196 controls (117 males, mean age 66±11 years) who underwent brain CT and carotid CT angiography (CTA) were retrospectively analysed...
June 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29920390/imaging-of-cerebral-avm-and-arteriovenous-fistulas-and-occlusion-control-using-intraoperative-3d-rotational-fluoroscopy
#7
Thomas Linsenmann, Nadine Lilla, Christian Stetter, Almuth F Keßler, Ralf-Ingo Ernestus, Thomas Westermaier
BACKGROUND: Intraoperative resection or occlusion control is indispensible in surgery of vascular anomalies. This can be conducted using local vascular imaging modalities or angiographic techniques. This series was performed to assess if cerebral arteriovenous malformations (AVM) and dural arteriovenous fistulae (dAVF) can be detected at appropriated quality by intraoperative 3D fluoroscopy with intravenous contrast application. MATERIALS AND METHODS: 5 patients were included in the analysis (2 AVM, 3 dAVF)...
June 16, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29913294/association-between-champagne-bottle-neck-sign-of-internal-carotid-artery-and-ipsilateral-hemorrhagic-stroke-in-patients-with-moyamoya-disease
#8
Jian Wang, Gong Chen, Yongbo Yang, Bing Zhang, Zhongzhi Jia, Peiyuan Gu, Dong Wei, Jing Ji, Weixing Hu, Xihai Zhao
OBJECTIVE: To assess the association between champagne bottle neck sign (CBNS) in carotid artery and intracranial hemorrhage in patients with moyamoya disease (MMD). METHODS: From January 2016 to December 2017, a total of 76 consecutive patients with MMD without definite risk factors associated intracranial hemorrhage who underwent preoperative angiography were included in this retrospective study. CBNS was defined as luminal diameter of internal carotid artery (ICA)/common carotid artery (CCA) ≤ 0...
June 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29912207/improved-registration-of-3d-ct-angiography-with-x-ray-fluoroscopy-for-image-fusion-during-transcatheter-aortic-valve-implantation
#9
Ina Vernikouskaya, Wolfgang Rottbauer, Julia Seeger, Birgid Gonska, Jochen Wöhrle, Volker Rasche
The fusion of 3D anatomical models derived from high-fidelity pre-interventional computed tomography angiography (CTA), and x-ray (XR) fluoroscopy to facilitate anatomical guidance is of huge interest for complex cardiac interventions like TAVI procedures with cerebral protection. Co-registration of CTA and XR has been introduced either based on additional intraoperative non-/contrast-enhanced cone-beam computed tomography (CBCT) or two separate aortograms. With the related increase of radiation exposure and/or contrast agent (CA) dose, a potential additional risk for the patient is introduced...
June 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29906575/sodium-fluorescein-video-angiography-fl-vag-as-an-adjunct-to-resection-of-cerebral-arteriovenous-malformations
#10
Serrano-Rubio Alejandro, Ruiz-Treviño Armando S, Orenday-Barraza Jose M, Vázquez-Gregorio Rafael, Lee Angel, Nathal Edgar
OBJECT: The use of intraoperative fluorescence has proven to be a useful tool in multiple neurosurgical procedures with a potential utility in treating arteriovenous malformations (AVMs). The aim of this study was to characterize dynamic changes of an AVM using a microscope-integrated technique at the moment of performing an intraoperative Sodium fluorescein videoangiography (FL-VAG) at each of the resection phases. METHODS: Our study at the National Institute of Neurology and Neurosurgery-Mexico City, prospectively recruited twelve patients harboring an AVM, using FL-VAG as an ancillary technique for the resection of the lesion...
June 12, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29904496/coil-embolization-of-an-enlarging-fusiform-myxomatous-cerebral-aneurysm
#11
Frances Lazarow, Serra Aktan, Karah Lanier, John Agola
Myxomatous cerebral aneurysms are rare sequelae of cardiac atrial myxoma. These aneurysms are generally fusiform, multiple, and distal. Pathogenesis and evolution of these aneurysms is still debated. There are currently no guidelines on the management of aneurysms secondary to atrial myxoma. We present a case of a 52-year-old man with multiple fusiform aneurysms 3 years after resection of a left atrial myxoma. One of these aneurysms was followed with cerebral angiography and showed substantial interval enlargement...
April 2018: Radiology Case Reports
https://www.readbyqxmd.com/read/29902610/modified-extended-suboccipital-subtonsillar-clipping-of-a-ruptured-proximal-pica-aneurysm-technical-note-with-relevant-anatomical-demonstration
#12
Alberto Di Somma, Paloma Cancela, Magdalena Olivares, Teresa Somma, Antonio López-González, Alvaro Campero, Juan Emmerich, Javier Márquez-Rivas
BACKGROUND: and importance: Lesions located lateral to the lower brainstem, such as proximal posterior inferior cerebellar artery (PICA) aneurysms, are surgically challenging. In this study we report a case of a patient with a left proximal PICA aneurysm that was successfully clipped via a so-called "extended" suboccipital subtonsillar approach, which allowed to obtain proper vascular control without removal of the atlas. The anatomy relevant for this approach has been studied...
June 11, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29902063/association-of-atp2b1-common-variants-with-asymptomatic-intracranial-and-extracranial-large-artery-stenosis-in-hypertension-patients
#13
Dewei An, Jin Zhang, Xiaofeng Tang, Pingjin Gao, Yan Li, Yan Wang, Dingliang Zhu
BACKGROUND AND AIMS: Genetic factors play an important role in the cervico-cerebral large-artery atherosclerotic stenosis (LAS), and ATP2B1 gene has been associated with the process of atherosclerosis disorders, such as coronary artery disease and arterial stiffness. But there is little information about the relationship between ATP2B1 gene and atherosclerosis in the intracranial arteries. We hereby investigated the association of common variants in ATP2B1 gene with LAS in asymptomatic Chinese hypertension patients...
June 14, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29901637/extracranial-intracranial-bypass-in-medial-sphenoid-ridge-meningioma-associated-with-severe-stenosis-of-the-intracranial-segments-of-the-internal-carotid-artery-a-case-report
#14
Yabo Huang, Zhong Wang, Qingdong Han
RATIONALE: Tumor resection and extracranial-intracranial bypass concerning medial sphenoid ridge meningioma associated with severe stenosis of the internal carotid artery (ICA) of intracranial segments has been rarely presented. Effective treatment as to the complex lesions may be complicated. Tumor resection and cerebrovascular protection should be both taken into consideration. PATIENT CONCERNS: We presented one case of medial sphenoid ridge meningioma associated with severe stenosis of the internal carotid artery of intracranial segments...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29897605/intraoperative-fluorescence-cerebral-angiography-by-laser-surgical-microscopy-comparison-with-xenon-microscopy-and-simultaneous-observation-of-cerebral-blood-flow-and-surrounding-structures
#15
Yuhei Ito, Kyouichi Suzuki, Tsuyoshi Ichikawa, Yoichi Watanabe, Taku Sato, Jun Sakuma, Kiyoshi Saito
BACKGROUND: Laser surgical microscopes should enable uniform illumination of the operative field, and require less luminous energy compared with existing xenon surgical microscopes. OBJECTIVE: To examine the utility of laser illumination in fluorescence cerebral angiography. METHODS: Fluorescein sodium (fluorescein) was used as a fluorescent dye. We first compared the clarity of cerebral blood flow images collected by fluorescence angiography between the laser illumination and xenon illumination methods...
June 12, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29895322/moyamoya-disease-in-a-moroccan-baby-a-case-report
#16
Abdelhafid Houba, Nisrine Laaribi, Mohammed Meziane, Abdelhamid Jaafari, Khalil Abouelalaa, Mustapha Bensghir
BACKGROUND: A stroke in a baby is uncommon, recent studies suggested that their incidence is rising. Moyamoya disease is one of the leading causes of stroke in babies. This condition is mostly described in Japan. In Morocco, moyamoya disease has rarely been reported and a few cases were published. We report a rare Moroccan case of a 23-month-old baby boy who presented with left-sided hemiparesis and was diagnosed as having moyamoya disease. CASE PRESENTATION: A 23-month-old full-term Moroccan baby boy born to a non-consanguineous couple was referred to our hospital with the complaint of sudden onset left-sided hemiparesis...
June 13, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29890540/rehabilitation-after-clipping-of-cerebral-aneurysms-without-acute-subarachnoid-hemorrhage-outcome-analysis-of-100-consecutive-cases
#17
Andreas Jödicke, Karsten Bauer, Andrea Hajdukova
BACKGROUND:  Discharge to rehabilitation is reported in large studies as one important outcome parameter based on hospital codes. Because neurologic outcome scores (e.g., the modified Rankin Scale [mRS]) are missing in International Classification of Diseases (ICD) databases, rehabilitation indirectly serves as a kind of surrogate parameter for overall outcome. Reported fractions of patients with rehabilitation, however, largely differ between studies and seem high for patients with aneurysm clipping...
June 11, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29889473/a-rare-aetiology-of-stroke-myxomatous-aneurysm-caused-by-atrial-myxoma
#18
Erkan Acar, Zeynep Ozdemir, Hatem Hakan Selcuk, Eda Coban, Aysun Soysal
Atrial myxoma is a rare cause of stroke. In this report we present the case of a 52-year-old female patient who went to hospital suffering from a headache. Her neurological examination was normal except for a positive Babinski sign on the left. In the superolateral of the right, a Sylvian fissure consistent with a thrombosed aneurysm was detected using computerised tomography (CT). Diffusion MRI showed an acute infarction on the right MCA area. Transthorasic Echocardiography and ECG were normal. A -16×4 mm-sized fusiform perpendicular aneurysm on the M2 segment Sylvian curve of right MCA and a -6×4 mm-sized dissecting aneurysm on P3 segment of the left posterior cerebral artery (PCA) were observed in cerebral angiography...
March 30, 2018: Ideggyógyászati Szemle
https://www.readbyqxmd.com/read/29889273/impact-of-interethnic-difference-of-collateral-angioarchitectures-on-prevalence-of-hemorrhagic-stroke-in-moyamoya-disease
#19
Satoshi Hori, Daina Kashiwazaki, Shusuke Yamamoto, Güliz Acker, Marcus Czabanka, Naoki Akioka, Naoya Kuwayama, Peter Vajkoczy, Satoshi Kuroda
BACKGROUND: Fragile, dilated moyamoya vessels are the main source of hemorrhagic stroke in moyamoya disease (MMD). However, the prevalence of hemorrhagic stroke largely differs between Asian and western countries, although the underlying pathophysiology has not been clarified. OBJECTIVE: To systematically analyze the difference of collateral angioarchitectures between Japanese and European Caucasians with MMD. METHODS: This study included 71 patients with MMD, including Japanese (n = 41) and European Caucasians (n = 30)...
June 8, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29888385/acute-ophthalmic-artery-occlusion-in-decompression-illness-with-underlying-anterior-cerebral-artery-a1-segment-hypoplasia
#20
Ahmad Razif Omar, Mohtar Ibrahim, Adil Hussein
A diver presented with total loss of vision in the left eye and right hemiparesis following a routine no-stop scuba dive to 20 metres' depth. A diagnosis of decompression illness (DCI) with acute ophthalmic artery air embolism and left carotid artery insult causing acute anterior circulatory ischaemia was made. He underwent seven hyperbaric treatments leading to a full recovery. Magnetic resonance angiography revealed an underlying left anterior cerebral artery A1 segment hypoplasia. Making a prompt diagnosis and early hyperbaric oxygen treatment are crucial to halt further tissue damage from ischaemia in central nervous system DCI...
June 30, 2018: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
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