نتایج جستجو برای: thoracic aorta
تعداد نتایج: 103704 فیلتر نتایج به سال:
objectives to evaluate morphologic variations at the aortic isthmus with particular attention to ductus diverticulum, a mimicker of traumatic pseudoaneurysm, and to describe differences using computed tomography (ct) images. patients and methods from december 2013 to december 2014, patients who underwent a chest ct examination after blunt trauma at our emergency department were included. aortic...
Mycotic aneurysms are localized and irreversible dilatations of the arteries caused by weakening and damaging the arterial wall by an invasive organism establishing infective arteritis. Mycotic aneurysm of the thoracic aorta is a rare event; however, it can be fatal if not diagnosed early or not treated appropriately. Clinical findings are usually nonspecific; however, c...
OBJECTIVE GCA carries an increased risk of developing thoracic aortic aneurysms. Previous work with fluorodeoxyglucose (FDG)-PET has shown that the aorta is frequently involved in this type of vasculitis. We wanted to investigate whether there is a correlation between the extent of vascular FDG uptake during the acute phase of GCA and the aortic diameter at late follow-up. METHODS All patient...
PURPOSE To clarify the postmortem multi-detector computed tomography (MDCT) vascular signs that occur shortly after death. MATERIALS AND METHODS The vascular signs in MDCT images were evaluated quantitatively in 96 early postmortem cardiac arrest patients, 47 cardiac arrest patients who survived due to resuscitation and 47 control patients without cardiac arrest. RESULTS Elliptical (40 case...
Hemoptysis is the rarest presentation of thoracic aortic aneurysm (TAA).This critical condition is one of the life-threatening medical emergencies. Even with prompt approaches, TAA can have highly terrible outcomes. Although TAA is an almost asymptomatic condition that is accidentally discovered, imaging with contrast is the most useful modality to diagnosis it.
Reports have shown the antioxidant, hypotensive, hypolipidemic and vasodilatory effects of grape (Vitis vinifera L.) seed extract. We have recently shown the relaxatory effect of grape leaf extract on rat uterus and reduction of frog heart rate and contractility. The aim of the present study was to investigate the relaxant effect of Vitis vinifera leaf hydroalcoholic extract (VLHE) on rat thora...
Chronic hyperinsulinemia is suspected of enhancing the development of arterial diseases. However, direct metabolic effects of insulin on the inner arterial wall are poorly documented. To assess the possible influence of variations in smooth muscle phenotype, we measured lipogenesis from glucose by rat thoracic aortas that had been injured with a balloon catheter. Aortas were exposed to insulin ...
Regional heterogeneity exists in reactivity of different vascular beds to vasoactive substances. Experiments were designed to determine if there are differences between thoracic and abdominal aorta response to acetylcholine-induced relaxation. Ten male Sprague-Dawley rats with a weighing between 200g-250g were used. The aorta was isolated and 3mm aortic rings were cut and suspended in organ bat...
Background: Hindlimb Unloading (HLU) is used to simulate microgravity in rats and has been shown to decrease contractile response in the abdominal aorta. The aim of present study was to investigate the contractile responses of smooth muscle of thoracic aorta following acute and chronic microgravity treatment. Methods: Male adult rats (Wistar) were subjected to HLU for 3 and 20 days t...
PURPOSE To investigate the characteristics of plaque in the thoracic aorta using three dimensional multicontrast magnetic resonance imaging. MATERIALS AND METHODS Elderly subjects (≥60years) were recruited in this study. Thoracic aorta was imaged on a 3.0T MR scanner by acquiring multicontrast sequences. The plaque burden was evaluated by measuring lumen area, wall area, wall thickness, and n...
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