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Vertebral artery tortuosity

Bum Joon Kim, Ewha Yang, Na-Young Kim, Mi-Jung Kim, Dong-Wha Kang, Sun U Kwon, Jong S Kim
BACKGROUND AND PURPOSE: Dissection is an increasingly recognized cause of ischemic stroke, which occurs spontaneously or after trauma, in relatively young patients. We hypothesized that there might be a predisposing factor weakening the vascular wall and that arterial tortuosity might be higher in patients with dissection. METHODS: We consecutively enrolled cervical artery dissection (CerAD) patients who had undergone magnetic resonance angiography. Age- and sex-matched healthy subjects who underwent magnetic resonance angiography in a routine health examination were used as controls...
October 2016: Stroke; a Journal of Cerebral Circulation
Evan Cyril Edmond, Samantha Xue-Li Sim, Hui-Hua Li, Eng-King Tan, Ling-Ling Chan
BACKGROUND: Hemifacial spasm (HFS) is a disabling neurological condition. Vascular tortuosity in HFS patients has not been quantified objectively and its relationship with hypertension and posterior fossa volume (PF) is unknown. In a case control magnetic resonance imaging and angiographic (MRI/A) study, we quantified and compared the vascular tortuosity in HFS and controls, and evaluated its relationship with hypertension and PF. METHODS: Using a commercially available vessel probe tool, an index of tortuosity based on vessel over chord length was employed to quantify vascular tortuosity of the vertebral (VA) and basilar arteries (BA) in 79 subjects (40 HFS, 39 controls)...
2016: BMC Neurology
Daniella Kadian-Dodov, Heather L Gornik, Xiaokui Gu, James Froehlich, J Michael Bacharach, Yung-Wei Chi, Bruce H Gray, Michael R Jaff, Esther S H Kim, Pamela Mace, Aditya Sharma, Eva Kline-Rogers, Christopher White, Jeffrey W Olin
BACKGROUND: Fibromuscular dysplasia (FMD) is a noninflammatory arterial disease that predominantly affects women. The arterial manifestations may include beading, stenosis, aneurysm, dissection, or tortuosity. OBJECTIVES: This study compared the frequency, location, and outcomes of FMD patients with aneurysm and/or dissection to those of patients without. METHODS: The U.S. Registry for FMD involves 12 clinical centers. This analysis included clinical history, diagnostic, and therapeutic procedure results for 921 FMD patients enrolled in the registry as of October 17, 2014...
July 12, 2016: Journal of the American College of Cardiology
T F Yan, J C Sun, L Fan, Y Wang, Y Yang, D Y Chen, J G Shi, G D Shi
OBJECTIVE: To explore the rules of the anatomic morphology between vertebral artery tortuosity and transverse foramen. METHODS: From January 2012 to December 2015, 60 patients with vertebral artery tortuosity by means of analyzing the image data and basic clinic information as the observation group, and 50 patients randomly selected exclusive of vertebral artery tortuosity, absence of vertebral artery, vertebral artery aneurysm, cervical decomposition incomplete deformity and oral cavity prosthesis artifacts as the control group, the basic clinical information was collected; the transverse foramen area (TF) and vertebral artery cross-sectional area (VA) of the vertebral artery were measured in the observation group and the control group; internal diameter of vertebral artery tortuosity, length of vertebral artery were measured and; twisting coefficient (s)of the vertebral artery was calculated...
June 21, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
Yu A Grigoryan, A R Sitnikov, G Yu Grigoryan
BACKGROUND: The tortuous vertebrobasilar artery (TVBA) often causes neurovascular conflicts in patients with trigeminal neuralgia (TN) and hemifacial spasm (HFS). Implementation of microvascular decompression (MVD) in these circumstances is hindered due to stiffness of the enlarged and dilated arteries and is often accompanied by poor outcomes. The surgical strategy in cases of trigeminal neuralgia and hemifacial spasm associated with the TVBA should be clarified in order to achieve good outcomes...
2016: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
Adnan I Qureshi, WeiGang Xiao, HongLiang Liu
BACKGROUND: The use of previously described catheter technique was expanded to complex supra- and abdominal- aortic catheterizations. METHODS: A new (Qureshi 5) catheter with curved shape at the distal end that has two lumens was used. One of lumens can accommodate a 0.035-inch guide wire and the second lumen can accommodate a 0.018-inch guide wire and terminates at the beginning of the distal curve of the first lumen. The manipulation and engagement of the curved distal end catheter was facilitated by rotation and movement of the J-shaped 0...
October 2015: Journal of Vascular and Interventional Neurology
Masaru Takeda, Hiroshi Kashimura, Kohei Chida, Toshiyuki Murakami
BACKGROUND: Aneurysms arising from the posterior communicating artery (PCoA) itself are rare in which aneurysms usually located in the proximal portion of the PCoA. The authors report a case of the true PCoA ruptured aneurysm in the distal portion of the PCoA. CASE DESCRIPTION: The patient was an 83-year-old man who suffered subarachnoid hemorrhage. Cerebral angiography revealed a saccular aneurysm arising on the fetal type right PCoA itself in the distal portion of the PCoA...
2015: Surgical Neurology International
Nicolas Aristokleous, Ioannis Seimenis, Georgios C Georgiou, Andrew Nicolaides, Andreas S Anayiotos
The geometric and hemodynamic characteristics of the left and right vertebral arteries (LVA, RVA) of six healthy volunteers were investigated for the supine (S) and the prone position (P) a common sleeping posture with head rotation. MRI images were used to reconstruct the subject specific three-dimensional solid models of the LVA and RVA from the level of the carotid bifurcation to the vertebrobasilar junction (VJ). Geometric parameters such as cross sectional area ratio, curvature, tortuosity and branch angle were estimated...
June 2015: Annals of Biomedical Engineering
Banu Alicioglu, Nadir Gulekon, Suha Akpinar
BACKGROUND CONTEXT: The V2 segment of the vertebral artery (VA) ascends and passes through the transverse foramen (TF) of the C6-C1 vertebrae. Atherosclerosis of the VA and degenerative changes in the cervical spine are likely to occur with aging, and subsequent morphologic changes may alter the normal anatomy. PURPOSE: The aim was to determine the morphologic changes of TF and VA in relation to aging. STUDY DESIGN/SETTING: This was a retrospective cross-sectional study...
September 1, 2015: Spine Journal: Official Journal of the North American Spine Society
Sarah C O'Connor, Neil Poria, Heather L Gornik
BACKGROUND: Fibromuscular dysplasia (FMD) is an uncommon vascular disease that presents with stenosis, aneurysm, dissection, beading, and tortuosity of medium-sized arteries. It primarily manifests in the renal and extracranial carotid and vertebral arteries, and is associated with major vascular events such as carotid artery dissection, renal artery dissection, ruptured aneurysm, transient ischemic attack, stroke, and myocardial infarction (due to coronary artery dissection). DISCUSSION: There is a wide spectrum of disease severity among FMD patients...
May 2015: Headache
Rui Zhou, Dong Liu, Ke Yu, Yang Chen, Ling Li, Jianzhong Xu, Huadong Zhou
The effects of carotid and vertebral arterial morphological variations on cognitive function impairment remain unclear. We investigated the association between extracranial carotid and vertebral arterial variations and the risk of Alzheimer's disease (AD). A prospective study with a 5-year followup was conducted from July 2008 to June 2013. A total of 1741 subjects (50 years of age and older) were examined for carotid and vertebral arterial variations using computed tomography angiography (CTA) and completed the study follow-up...
2015: Current Alzheimer Research
Jung-Soo Park, Eun-Jeong Koh, Ha-Young Choi, Jong-Myong Lee
BACKGROUND: Hemifacial spasm (HFS) is caused by tortuous offending vessels near the facial nerve root exit zone. However, the definitive mechanism of offending vessel formation remains unclear. We hypothesized that vascular angulation and tortuosity, probably caused by uneven vertebral artery blood flow, result in vascular compression of the facial nerve root exit zone. METHODS: The authors observed two anatomical characteristics of the vertebrobasilar arterial system in 120 subjects in the surgical group and 188 controls...
March 2015: Acta Neurochirurgica
T Schubert, M Pansini, O Bieri, C Stippich, S Wetzel, S Schaedelin, A von Hessling, F Santini
BACKGROUND AND PURPOSE: Physiologic and pathologic arterial tortuosity may attenuate blood flow pulsatility. The aim of this prospective study was to assess a potential effect of the curved V3 segment (Atlas slope) of the vertebral artery on arterial flow pulsatility. The pulsatility index and resistance index were used to assess blood flow pulsatility. MATERIALS AND METHODS: Twenty-one healthy volunteers (17 men, 4 women; mean age, 32 years) were examined with a 3T MR imaging system...
March 2015: AJNR. American Journal of Neuroradiology
Daopei Zhang, Shuling Zhang, Hongtao Zhang, Yuming Xu
Patients with posterior circulation infarction underwent CT angiography and magnetic resonance angiography. Intracranial and extracranial vasculopathy was evaluated according to age group and location of stroke. Patients aged > 60 years and < 60 years had similar rates of vertebral artery dominance and vertebrobasilar artery developmental or origin anomalies. Vertebrobasilar artery stenosis or occlusion and tortuosity occurred more frequently in patients aged > 60 years than < 60 years. The rates of vertebrobasilar artery anomalies and tortuosity were high in patients with posterior circulation infarction...
November 15, 2012: Neural Regeneration Research
Xuan Sun, Ning Ma, Bo Wang, Dapeng Mo, Feng Gao, Xiaotong Xu, Lian Liu, Ligang Song, Zhongrong Miao
BACKGROUND AND PURPOSE: The long term results of vertebral artery ostium (VAO) stenting remain uncertain. We sought to evaluate the incidence and risk factors for recurrent ischemic events on long term follow-up in patients who have undergone VAO stenting. METHODS: 190 consecutive patients who had undergone a total of 202 stenting procedures for symptomatic atherosclerotic VAO stenosis between January 2011 and December 2012 were screened. Baseline demographics of the patients and morphological features of VAO were recorded...
December 2015: Journal of Neurointerventional Surgery
Stephan A Munich, Lee A Tan, Kiffon M Keigher, Michael Chen, Roham Moftakhar, Demetrius K Lopes
OBJECT: Vertebrobasilar fusiform aneurysms (VFAs) are rare lesions characterized by abnormal dilation and tortuosity of the vertebral and/or basilar arteries. Untreated, these aneurysms have a tendency to progress, often resulting in neurological symptoms or rupture leading to subarachnoid hemorrhage. The microsurgical treatment of these lesions can be difficult due to their location and the circumferential involvement of the arteries. These features make microsurgical treatment prone to high morbidity...
November 2014: Journal of Neurosurgery
Marco Ritelli, Nicola Chiarelli, Chiara Dordoni, Stefano Quinzani, Marina Venturini, Roberto Maroldi, Piergiacomo Calzavara-Pinton, Marina Colombi
BACKGROUND: The Loeys-Dietz syndrome (LDS) is a rare autosomal dominant disorder characterized by thoracic aortic aneurysm and dissection and widespread systemic connective tissue involvement. LDS type 1 to 4 are caused by mutations in genes of the TGF-β signaling pathway: TGFBR1 and TGFBR2 encoding the TGF-β receptor (LDS1 and LDS2), SMAD3 encoding the TGF-β receptor cytoplasmic effector (LDS3), and TGFB2 encoding the TGF-β2 ligand (LDS4). LDS4 represents the mildest end of the LDS spectrum, since aneurysms are usually observed in fourth decade and the progression of the disease is slower than in the other forms...
2014: BMC Medical Genetics
Jackson J Liang, Megha Prasad, Marysia S Tweet, Sharonne N Hayes, Rajiv Gulati, Jerome F Breen, Shuai Leng, Terri J Vrtiska
BACKGROUND: Spontaneous coronary artery dissection (SCAD) is associated with extracoronary vascular abnormalities, which depending on type and location may warrant treatment or provide additional diagnostic or prognostic information about this uncommon entity. Fibromuscular dysplasia (FMD), aneurysms, and dissections have been detected in multiple vascular territories by magnetic resonance angiography, CT angiography (CTA), and catheter angiography. The optimal modality to detect extracoronary vascular abnormalities is unknown...
May 2014: Journal of Cardiovascular Computed Tomography
Fabienne Perren, Michel R Magistris
BACKGROUND: Arterial tortuosity of the posterior circulation compressing the facial nerve induces the ephaptic axono-axonal cross-talk that sparks hemifacial spasm. We sought if a noninvasive method such as color duplex of these arteries might detect hemodynamical changes in this condition. METHODS: Nine patients with hemifacial spasm, successfully treated with botulinum toxin, were examined with color-coded duplex ultrasound. Mean blood flow velocities of the vertebral, basilar, posterior inferior cerebellar, and anterior inferior cerebellar arteries were measured and side-to-side comparison performed...
August 2014: Acta Neurochirurgica
Sang-Hun Lee, Dae-Hyun Park, Sang-Do Kim, Dae-Seok Huh, Ki-Tack Kim
STUDY DESIGN: A retrospective radiological study. OBJECTIVE: To analyze the course of intra-axial vertebral artery (IAVA) and evaluate the relationship between the 3-dimensional (3D) courses for IAVA with respect to safe trajectory for C2 pedicle screw (C2PS). SUMMARY OF BACKGROUND DATA: The VA at the level of C2 has a distinct 3D course. The traditional concept of "high riding (HR)" VA was based on sagittal plane but does not provide all the 3D course of IAVA for safe C2PS placement...
August 1, 2014: Spine
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