AIM Knowledge of cerebrovascular morphology is integral in planning neuroendovascular interventions, especially for procedures involving placement of stents, flow diverters or stentrievers. There is insufficient data on angiographic normative values of cerebral circulation in the pediatric age group since angiograms are uncommonly performed in children except for arteriovenous malformations in ...

BACKGROUND Circle of Willis (COW) variants might influence arterial caliber in the brain. We hypothesized that these variants would be associated with the prevalence of intracranial dolichoectasia (DE). METHODS We examined COW variants and DE in a sample of stroke-free participants (n = 436) undergoing magnetic resonance angiography (MRA) as part of a population-based study. Large intracrania...

Background: Beta-thalassemia intermedia (BTI) is a type of hemoglobinopathy with an increased risk of cerebrovascular accidents, and transcranial cerebral Doppler ultrasonography (TCD) through determining the mean cerebral blood flow velocity (CBFV) can serve to predict the risk of a developing stroke. This study aims to compare patients with beta-thalassemia intermedia and healthy individuals ...

Intracranial atherosclerotic disease (ICAD), as a most common cause of ischemic stroke, has been drawing increased attentions of clinicians and researchers in the worldwide. Advanced imaging techniques, especially High Resolution Magnetic Resonance Imaging (HRMRI), could visualize the pathology of intracranial arterial diseases. However, current knowledge about histology of intracranial atheros...

PURPOSE To investigate the clinical utility of dual-source dual-energy CT angiography (DSDECTA) for diagnosing intracranial dural arteriovenous fistula (DAVF). METHODS Nine intracranial DAVF patients were examined using Siemens DSDECTA and cerebral digital subtraction angiography (DSA). Imaging data were retrospectively analyzed to evaluate the concordance between the imaging modalities. RE...

Intracranial atherosclerotic disease (ICAD), as a most common cause of ischemic stroke, has been drawing increased attentions of clinicians and researchers in the worldwide. Advanced imaging techniques, especially High Resolution Magnetic Resonance Imaging (HRMRI), could visualize the pathology of intracranial arterial diseases. However, current knowledge about histology of intracranial atheros...

BACKGROUND Intracranial aneurysms related to human immunodeficiency virus (HIV) infection have been well described in pediatric patients but not in adults. OBJECTIVE To describe a case of intracranial large-vessel aneurysmal vasculopathy causing stroke in a 27-year-old HIV-infected woman. DESIGN Comparison of clinical and histological data with previously published cases. SETTING A referr...

conceptually traumatic brain injury (tbi) can be classified from a mechanistic perspective as: 1) closed, 2) penetrating, 3) blast, and 4) crush injuries. thus, tbi is a heterogeneous disease and each type of brain injury has different characteristic features often necessitating different approaches to management. the first edition of the guidelines for management and prognosis of penetrating b...

Traumatic basal subarachnoid haemorrhage (TBSAH) refers to a severe centred bleed, almost invariably resulting from micro-tear or in exceptional circumstances more lengthy dissection of the intracranial vertebrobasilar arterial system. This is typically caused by an impact side upper neck, angle jaw and/or ear/mastoid region. TBSAH associated with immediate comatose state, often accompanied int...

conclusion our study revealed that the hypoplastic umbilical artery group’s non-dominant cia had higher ri values than the contralateral dominant cia. results eleven of the 165 patients (6.7%) demonstrated a hypoplastic umbilical artery. second-trimester us showed median dominant and non-dominant cia pi values of 1.43 and 1.60 (p = 0.062), respectively, and median dominant and non-dominant cia ...