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https://www.readbyqxmd.com/read/28320123/relationship-of-the-angle-between-the-a1-and-a2-segments-of-the-anterior-cerebral-artery-with-formation-and-rupture-of-anterior-communicating-artery-aneurysm
#1
Jingya Ye, Peidong Zheng, Muhammad Hassan, Shengnan Jiang, Jiesheng Zheng
PURPOSE: To measure the angle between A1 and A2 segments of the anterior cerebral artery and analyze the relationship of this angle with the formation and rupture of anterior communicating artery aneurysm (ACoAA). METHODS: Patients with ACoAA (n=64) and with non-ACoAA (n=187) randomly chosen were included. The A1-A2 segment angles were measured using multislice spiral computed tomography angiography. The angular dimensions and differences were recorded and compared between the ACoAA and non-ACoAA groups and the ruptured (n=23) and unruptured group (n=41)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28304199/jailed-double-microcatheter-technique-following-horizontal-stenting-for-coil-embolization-of-intracranial-wide-necked-bifurcation-aneurysms-a-technical-report-of-two-cases
#2
Takahiro Kitahara, Taketo Hatano, Makoto Hayase, Etsuko Hattori, Akinori Miyakoshi, Takehiko Nakamura
The horizontal stenting technique facilitates endovascular treatment of wide-necked bifurcation intracranial aneurysms. Previous literature shows, however, that subsequent coil embolization at initial treatment results in incomplete obliteration in many cases. The authors present two consecutive cases of wide-necked large bifurcation aneurysms to describe an additional coil embolization technique following horizontal stenting. The patients were a 53-year-old female with an unruptured internal carotid artery terminus aneurysm and a 57-year-old female with a recurrent basilar artery tip aneurysm...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28298037/impact-of-bifurcation-angle-and-inflow-coefficient-on-the-rupture-risk-of-bifurcation-type-basilar-artery-tip-aneurysms
#3
Sherif Rashad, Shin-Ichiro Sugiyama, Kuniyasu Niizuma, Kenichi Sato, Hidenori Endo, Shunsuke Omodaka, Yasushi Matsumoto, Miki Fujimura, Teiji Tominaga
OBJECTIVE Risk factors for aneurysm rupture have been extensively studied, with several factors showing significant correlations with rupture status. Several studies have shown that aneurysm shape and hemodynamics change after rupture. In the present study the authors investigated a static factor, the bifurcation angle, which does not change after rupture, to understand its effect on aneurysm rupture risk and hemodynamics. METHODS A hospital database was retrospectively reviewed to identify patients with cerebral aneurysms treated surgically or endovascularly in the period between 2008 and 2015...
March 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28298012/association-of-hypothyroidism-with-unruptured-cerebral-aneurysms-a-case-control-study
#4
Kunakorn Atchaneeyasakul, Anita Tipirneni, Tony Zhang, Priyank Khandelwal, Sudheer Ambekar, Brian Snelling, Sushrut Dharmadhikari, Chuanhui Dong, Luis Guada, Kevin Ramdas, Seemant Chaturvedi, Tatjana Rundek, Dileep R Yavagal
OBJECTIVE Thyroid disorder has been known to affect vascular function and has been associated with aortic aneurysm formation in some cases; however, the connection has not been well studied. The authors hypothesized that hypothyroidism is associated with the formation of cerebral aneurysms. METHODS The authors performed a retrospective case-control study of consecutive patients who had undergone cerebral angiography at an academic, tertiary care medical center in the period from April 2004 through April 2014...
February 17, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28295517/a-giant-aneurysm-of-noncoronary-sinus-of-valsalva-concomitant-with-aortic-regurgitation-and-mitral-regurgitation
#5
Yi Luo, Zhi Fang, Wei Meng
Aneurysms of the sinus of Valsalva (ASV) are rare, with an incidence ranging from 0.1% to 3.5% of all congenital cardiac defects and a prevalence of 0.009% in an autopsy series.ASVs occur much more frequently in the right coronary sinus of Valsalva. Previous reports, based on necropsy and cardiac surgery findings, estimated that 20% of ASVs are unruptured. Patients with an unruptured ASV may remain asymptomatic for a long period of time until rupture. They may also presented with dyspnea, palpitation, and angina-like chest pain...
March 14, 2017: Echocardiography
https://www.readbyqxmd.com/read/28285454/association-between-hemodynamics-morphology-and-rupture-risk-of-intracranial-aneurysms-a-computational-fluid-modeling-study
#6
Tianlun Qiu, Guoliang Jin, Haiyan Xing, Haitao Lu
The objective of the study was to examine the correlations between intracranial aneurysm morphology and wall shear stress (WSS) to identify reliable predictors of rupture risk. Seventy-two intracranial aneurysms (41 ruptured and 31 unruptured) from 63 patients were studied retrospectively. All aneurysms were divided into two categories: narrow (aspect ratio ≥1.4) and wide-necked (aspect ratio <1.4 or neck width ≥4 mm). Computational fluid dynamics was used to determine the distribution of WSS, which was analyzed between different morphological groups and between ruptured and unruptured aneurysms...
March 11, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28283868/intracranial-aneurysms-in-patients-with-autosomal-dominant-polycystic-kidney-disease-prevalence-risk-of-rupture-and-management-a-systematic-review
#7
REVIEW
Federico Cagnazzo, Carlo Gambacciani, Riccardo Morganti, Paolo Perrini
BACKGROUND: Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder associated with high incidences of intracranial aneurysms. We performed a systematic review with the purpose of clarifying the prevalence, risk of rupture, and appropriate management of intracranial aneurysms in the ADPKD population. METHOD: PRISMA guidelines were followed. We conducted a comprehensive literature search of three databases (PubMed, Ovid MEDLINE, and Ovid EMBASE) on all series reporting ADPKD patients with intracranial aneurysms...
March 10, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28273502/ruptured-berry-aneurysm-with-minimal-subarachnoid-hemorrhage
#8
Tyler J Gardner, Joseph A Prahlow
Cerebral artery aneurysm rupture is usually associated with significant subarachnoid hemorrhage; however, there are rare cases where there is a lack of hemorrhage into the subarachnoid space. While subdural hemorrhage can occur with ruptured aneurysms, isolated subdural hemorrhage is more often associated with trauma. In this case, a 51-year-old obese woman, who recently visited an Urgent Care Center for elevated blood pressure, was found dead roughly a month later. She had been complaining of headaches, and received medication for her blood pressure at the visit...
February 28, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28272703/the-study-of-endogenous-hepatocyte-growth-factor-in-the-pathogenesis-of-intracranial-aneurysms
#9
L-L Yu, Y-J Liu, Z-H Wang, L Shi, L-X Liu
OBJECTIVE: Inflammation as a significant influence factor plays an important role in the formation and rupture of intracranial aneurysms. However, based on plenty of related studies, it is believed that the hepatocyte growth factor (HGF) is able to prevent vascular inflammation. This paper, therefore, explored the role and mechanism of endogenous HGF in the pathogenesis of intracranial aneurysms. MATERIALS AND METHODS: 16 blood samples were collected from the intracranial aneurysms and the lumens of the femoral artery of 16 patients...
February 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28271159/inflow-hemodynamics-evaluated-by-using-four-dimensional-flow-magnetic-resonance-imaging-and-the-size-ratio-of-unruptured-cerebral-aneurysms
#10
Kazuya Futami, Iku Nambu, Tomohiro Kitabayashi, Hiroki Sano, Kouichi Misaki, Naoyuki Uchiyama, Mitsutoshi Nakada
PURPOSE: Prediction of the rupture risk is critical for the identification of unruptured cerebral aneurysms (UCAs) eligible for invasive treatments. The size ratio (SR) is a strong morphological predictor for rupture. We investigated the relationship between the inflow hemodynamics evaluated on four-dimensional (4D) flow magnetic resonance (MR) imaging and the SR to identify specific characteristics related to UCA rupture. METHODS: We evaluated the inflow jet patterns and inflow hemodynamic parameters of 70 UCAs on 4D flow MR imaging and compared them among 23 aneurysms with an SR ≧2...
March 7, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28266724/multiple-aneurysmatic-involvement-of-sinus-of-valsalva
#11
Ahmet Guner, Mehmet Celik, Muzaffer Kahyaoglu, Ozkan Candan, Nuri Havan, Adnan Ak, Ozge Karaman, Aykun Hakgor, Cagatay Onal, Cetin Gecmen
Forty-five-year-old male patient presented with chest pain and dyspnea lasting for three weeks. Transthoracic echocardiography demonstrated a huge right sinus of Valsalva aneurysm. Contrast-enhanced cardiac computed tomography was performed and revealed three large unruptured sinus of Valsalva aneurysms.
March 7, 2017: Echocardiography
https://www.readbyqxmd.com/read/28265012/cerebral-aneurysm-morphology-before-and-after-rupture-nationwide-case-series-of-29-aneurysms
#12
Torbjørn Øygard Skodvin, Liv-Hege Johnsen, Øivind Gjertsen, Jørgen Gjernes Isaksen, Angelika Sorteberg
BACKGROUND AND PURPOSE: Using postrupture morphology to predict rupture risk of an intracranial aneurysm may be inaccurate because of possible morphological changes at or around the time of rupture. The present study aims at comparing morphology from angiograms obtained prior to and just after rupture and to evaluate whether postrupture morphology is an adequate surrogate for rupture risk. METHODS: Case series of 29 aneurysms from a nationwide retrospective data collection...
March 6, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28264234/semi-jailing-technique-using-a-neuroform3-stent-for-coiling-of-wide-necked-intracranial-aneurysms
#13
Jun Kyeung Ko, Won Ho Cho, Seung Heon Cha, Chang Hwa Choi, Sang Weon Lee, Tae Hong Lee
OBJECTIVE: The semi-jailing technique (SJT) provides stent-assisted remodeling of the aneurysm neck during coil embolization without grasping the coil delivery microcatheter. We retrospectively evaluated the efficacy and safety of SJT using a Neuroform3 stent for coiling of wide-necked intracranial aneurysms. METHODS: We collected the clinical and radiological data between January 2009 and June 2015 of the wide-necked aneurysms treated with SJT using a Neuroform3 stent...
March 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28256324/time-trends-in-hospital-admissions-and-mortality-due-to-abdominal-aortic-aneurysms-in-france-2002-2013
#14
M Robert, Y Juillière, A Gabet, S Kownator, V Olié
BACKGROUND: Abdominal aortic aneurysms (AAA) are serious disease with a high fatality rate but recent epidemiologic data showed a decrease of AAA mortality. Our objective was to estimate, in France, the hospitalization, inhospital mortality and mortality rates due to AAA and to analyze their trends over time. METHODS: Hospitalization data were extracted from the hospital discharge summaries in the national database between 2002 and 2013. The analysis covered all patients hospitalized for AAA as a principal diagnosis...
May 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28238529/innovations-in-endovascular-treatment-strategies-for-large-carotid-cavernous-aneurysms-the-safety-and-efficacy-of-a-flow-diverter
#15
Shigeru Miyachi, Hiroyuki Ohnishi, Ryo Hiramatsu, Takashi Izumi, Noriaki Matsubara, Toshihiko Kuroiwa
BACKGROUND: The efficacy for the treatment of large carotid cavernous aneurysms (CCAs) was compared between conventional endovascular treatments, stent-assisted coiling (SAC), parent artery occlusion (PAO), and the flow diverter (FD). METHODS: Between January 2001 and December 2015, 49 patients with large, broad-necked, unruptured CCA underwent endovascular treatment at our institution. We performed PAO in 22 patients, SAC in 18 patients, and FD in 9 patients. Safety and efficacy were assessed in all patients by periodic clinical and radiological examinations during a 6-month follow-up...
February 24, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28236050/endovascular-treatment-of-intracranial-aneurysms-with-the-p64-flow-diverter-stent-mid-term-results-in-35-patients-with-41-intracranial-aneurysms
#16
Ricardo Morais, Benjamin Mine, Pierre Julien Bruyère, Gilles Naeije, Boris Lubicz
INTRODUCTION: The p64 flow diverter (FD) device is a fully resheathable and detachable stent dedicated for endovascular treatment (EVT) of intracranial aneurysms (IAs). We report our mid-term experience with this device. METHODS: Between January 2015 and February 2016, we retrospectively identified, in our prospectively maintained database, all patients treated with p64 FDs in two institutions. Independent clinical follow-up was performed by a vascular neurologist...
February 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28236049/analysis-of-the-venous-channel-within-the-clivus-using-multidetector-computed-tomography-digital-subtraction-venography
#17
Katsuhiro Mizutani, Masahiro Toda, Jun Kurasawa, Takenori Akiyama, Hirokazu Fujiwara, Masahiro Jinzaki, Kazunari Yoshida
PURPOSE: Although neuroradiologists and skull base neurosurgeons are aware of the existence of veins within the clivus, such vessels have seldom been described in the literature. The aim of the present study is to elucidate the detailed venous structure of the clivus. METHODS: Computed tomography digital subtraction venography (CT-DSV) images of 50 unruptured aneurysm cases were examined retrospectively. RESULTS: Eighteen emissary veins were identified in 14 (28...
February 24, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28235953/nickel-associated-delayed-multiple-white-matter-lesions-after-stent-assisted-coil-embolization-of-intracranial-unruptured-aneurysm
#18
Hun Soo Park, Ichiro Nakagawa, Shohei Yokoyama, Daisuke Wajima, Takeshi Wada, Yasushi Motoyama, Kimihiko Kichikawa, Hiroyuki Nakase
Metal-induced encephalopathy after stent-assisted coil embolization is extremely rare. The present report describes two patients who presented with symptomatic intracranial parenchymal edematous lesions after stent-assisted coil embolization. A 64-year-old woman underwent stent-assisted coil embolization for a left internal carotid artery aneurysm; 21 days after the procedure she presented with right hand weakness and MRI revealed multifocal white matter lesions. Another woman aged 52 years underwent stent-assisted coil embolization for right vertebral artery aneurysm; 18 days after the procedure she presented with left-sided sensory disturbance and MRI demonstrated multiple white matter lesions...
February 24, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28223428/periprocedural-outcomes-and-early-safety-with-the-use-of-the-pipeline-flex-embolization-device-with-shield-technology-for-unruptured-intracranial-aneurysms-preliminary-results-from-a-prospective-clinical-study
#19
Mario Martínez-Galdámez, Saleh M Lamin, Konstantinos G Lagios, Thomas Liebig, Elisa F Ciceri, Rene Chapot, Luc Stockx, Swarupsinh Chavda, Christoph Kabbasch, Giuseppe Farago, Hannes Nordmeyer, Thierry Boulanger, Mariangela Piano, Edoardo P Boccardi
BACKGROUND AND PURPOSE: The Pipeline Embolization Device (PED) has become a routine first-line option for treatment of intracranial aneurysms (IAs). We assessed the early safety and technical success of a new version of PED, Pipeline Flex Embolization Device with Shield Technology (Pipeline Shield), which has the same design and configuration but has been modified to include a surface synthetic biocompatible polymer. MATERIALS AND METHODS: The Pipeline Flex Embolization Device with Shield Technology (PFLEX) study is a prospective, single-arm, multicenter study for the treatment of unruptured IAs using Pipeline Shield...
February 20, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28219938/endovascular-treatment-of-intracranial-aneurysms-with-the-woven-endobridge-device-mid-term-and-long-term-results
#20
Benjamin Mine, Alexandra Goutte, Denis Brisbois, Boris Lubicz
PURPOSE: To evaluate the clinical and anatomical results of treatment of intracranial aneurysms (IA) with the Woven EndoBridge (WEB) device, with emphasis on mid term and long term follow-up. METHODS: Between November 2010 and November 2015, we retrospectively identified, in our prospectively maintained database, all patients treated by WEB device placement for an IA at three institutions. Clinical charts, procedural data, and angiographic results were reviewed...
February 20, 2017: Journal of Neurointerventional Surgery
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