Object Moyamoya disease (MMD) is a rare cerebrovascular mainly described in the Asian literature. To address lack of data on clinical characteristics and long-term outcomes treatment MMD North America, authors analyzed their experience at Stanford University Medical Center. They report consecutive series patients treated for detail demographics, characteristics, surgical outcomes. Methods Data obtained 329 with microsurgically by senior author (G.K.S.) between 1991 2008 were analyzed....

Background and Purpose— Medical treatment of symptomatic intracranial stenosis carries a high risk stroke. This study was done to evaluate the clinical angiographic outcomes after angioplasty for this disease. Methods— A total 120 patients with 124 stenoses were treated by primary angioplasty. All had neurologic symptoms (stroke or transient ischemic attack) attributable ≥50%. Angiograms evaluated before degree stenosis. Results— Pretreatment varied from 50% 95% (mean 82.2±10.2)....

Determining the presence and adequacy of collateral blood flow is important in cerebrovascular disease. Therefore, we explored whether a noninvasive imaging modality, arterial spin labeling (ASL) MRI, could be used to detect intensity using digital subtraction angiography (DSA) stable xenon CT cerebral as gold standards for collaterals flow, respectively.ASL DSA were obtained within 4 days each other 18 patients with Moyamoya Two neurointerventionalists scored images grading scale regions...

Abstract OBJECTIVE Giant arteriovenous malformations (AVMs) (i.e., those greater than 6 cm at maximum diameter) are difficult to treat and often carry higher treatment morbidity mortality rates do smaller AVMs. In this study, we reviewed the treatment, angiographic results, clinical outcomes in 53 patients with giant AVMs who were treated Stanford between 1987 2001. METHODS The selected included 20 males (38%) 33 females (62%). Their presenting symptoms hemorrhage (n = 20; 38%), seizures 18;...

Creation of Saccular Aneurysms in the RabbitA Model Suitable for Testing Endovascular DevicesTalissa A. Altes1, Harry J. Cloft1 2, John G. Short1, Anjob DeGast1, Huy M. Do1, Gregory Helm3 and David F. Kallmes1Audio Available | Share

<i>Background:</i> The natural history of unilateral moyamoya disease (MMD) in adult patients is not clearly described the literature. We present a series 18 with MMD and analyze risk factors for progression to bilateral disease. <i>Methods:</i> A retrospective review 157 treated at Stanford University Medical Center from 1991 2005 identified 28 (defined as none, equivocal or mild involvement on contralateral side). <i>Results:</i> Eigh teen (5 males 13...

To establish the sensitivity and specificity of indirect signs at magnetic resonance (MR) imaging anterior cruciate ligament (ACL) tear.MR images knees 89 consecutive patients (54 with torn 35 normal ACLs) were reviewed.The as follows (first percentage is sensitivity; second, specificity): angle between lateral tibial plateau ACL less than 45 degrees (90%, 97%); Blumenstaat line more 15 (89%, 100%); bone contusions in compartment (54%, position posterior (PCL) (52%, 91%); PCL 107 94%);...

Successful management of pediatric arteriovenous malformations (AVMs) often requires a balanced application embolization, surgery, and radiosurgery.To describe our experience treating AVMs.We analyzed 120 patients (< 18 years age) with AVMs treated various combinations radiosurgery, endovascular techniques.Between 1985 2009, 76 children low Spetzler-Martin grade (1-3) 44 high-grade (4-5) were treated. Annual risk hemorrhage from presentation to initial treatment was 4.0%, decreasing 3.2%...

Patients with fusiform aneurysms can present subarachnoid hemorrhage (SAH), mass effect, ischemia, or unrelated symptoms. The absence of an aneurysm neck impedes the direct application a clip and endovascular coil deployment. To evaluate effects their treatments, authors retrospectively analyzed consecutive series patients posterior circulation treated at Stanford University Medical Center between 1991 2005.Forty-nine (mean age 53 years, male/female ratio 1.2:1) authors' medical center form...

<b>BACKGROUND AND PURPOSE:</b> Embolization of arteriovenous malformations (AVMs) is commonly used to achieve nidal volume reduction before microsurgical resection or stereotactic radiosurgery. The purpose this study was examine the overall neurologic complication rate in patients undergoing AVM embolization and analyze factors that may determine increased risk. <b>MATERIALS METHODS:</b> We performed a retrospective review all with brain AVMs embolized at 1 center from 1995 through 2005....

<h3>BACKGROUND AND PURPOSE:</h3> The diagnosis of intracranial DAVF with noninvasive cross-sectional imaging such as CTA is challenging. We sought to determine the sensitivity and specificity compared cerebral angiography for in patients presenting PT. <h3>MATERIALS METHODS:</h3> Following approval institutional review board, we reviewed all who underwent PT from 2004 2009 collected clinical data. Seven proved 7 age- sex-matched control but no composed study group. images were blindly...

Grade III arteriovenous malformations (AVMs) are diverse because of their variations in size (S), location eloquent cortex (E), and presence central venous drainage (V). Because they may have implications for management outcome, the authors evaluated these present study.Between 1984 2010, 100 patients with AVMs were treated. The categorized by Spetzler-Martin characteristics as follows: Type 1 = S1E1V1, 2 S2E1V0, 3 S2E0V1, 4 S3E0V0. occurrence a new neurological deficit, functional status...

OBJECTIVE: Complete anatomic obliteration remains difficult to achieve with endovascular treatment of wide-necked aneurysms using Guglielmi detachable platinum coils (GDCs). Ion implantation is a physicochemical surface modification process resulting from the impingement high-energy ion beam. and protein coating were used alter properties (thrombogenicity, endothelial cellular migration, adhesion) GDCs. These modified compared standard GDCs in experimental swine aneurysms. METHODS: In an...

The plantar plate of the foot is formed by aponeurosis and capsule. arises from distal aspect metatarsal neck inserts on proximal phalangeal base. This thick supports undersurface head resists hyperextension metatarsophalangeal joint (MTPJ) [1]. Plantar rupture may present as lesser metatarsalgia (the metatarsals are second through fifth), occasionally with exuberant synovitis. derangement also plays a central role in genesis common hammertoe [2, 3]. Rupture or degeneration destabilizes...

Object Posterior fossa arteriovenous malformations (AVMs) are relatively uncommon and often difficult to treat. The authors present their experience with multimodality treatment of 76 posterior AVMs, an emphasis on Spetzler–Martin Grades III–V AVMs. Methods Seventy-six patients AVMs treated radiosurgery, surgery, endovascular techniques were analyzed. Results Between 1982 2006, 36 cerebellar 33 brainstem 7 combined cerebellar–brainstem treated. Natural history data calculated for all...

Phase-locked particle image velocimetry is used to study the mechanism of induced flow in near field a rf dielectric barrier discharge actuator mounted separated region bluff body. Flow actuation found be asymmetric, with suction toward buried downstream electrode when it biased positively relative upstream exposed electrode. Lesser seen on reverse voltage swing, where should attract positive ions. This phenomenon enhanced oxygen added flow, suggesting that negative ions, possibly O2−, play...

Introduction Multiple randomized trials have shown that endovascular thrombectomy (EVT) leads to improved outcomes in acute ischemic stroke (AIS) due large vessel occlusion (LVO). Elderly patients were poorly represented these trials, and the efficacy of EVT nonagenarian remains uncertain. Methods We performed a retrospective cohort study at single center. Inclusion criteria were: age 80–99, LVO, core infarct &lt;70 mL, salvageable penumbra. Patients stratified into octogenarian (80–89)...