BACKGROUND Chronic tracheal obstruction has been associated with learning deficits; hence, early surgical intervention has been suggested. AIM To evaluate the relationship between learning performance and vascular ring caused by an isolated aberrant right subclavian artery. METHODS Participants included 1,685 undergraduate students (ie, students of medical informatics and medical/public hea...

Abstract The expediency of replacing the corrugated ring a vascular stent with constant corrugation pitch by variable is being investigated. To describe change in corrugation, special function introduced. equilibrium and deformation equations were analyzed using asymptotic homogenization method. dependence radial stiffness on constructive parameters obtained. effectiveness design under consider...

Although absence of the common carotid artery (CCA) is a rare anomaly, the specific configuration in our case makes it extremely rare. Clinical, angiographic, ultrasonographic, and embryologic correlations of this anomaly are discussed after the case report.

Contrast-Enhanced MR Angiography of Thoracic Vascular Malformations in a Pediatric Population Filipe Caseiro-Alves1,2, Paulo Gil-Agostinho1, Graça Ramalheiro3 and Pedro Gil-Agostinho1 1 Imacentro, Clinica de Imagiologia Médica, Rua S.Teotónio, Lote 8, 5° Esq., 3000-377 Coimbra, Portugal. 2 Faculdade de Medicina de Coimbra, Cadeira de Imagiologia, 3000-075 Coimbra, Portugal. 3 Paediatric Cardiol...