نتایج جستجو برای: vascular abnormality
تعداد نتایج: 363003 فیلتر نتایج به سال:
We present the case of a young woman with persistent secondary postpartum hemorrhage. Transvaginal imaging demonstrated an irregular pulsatile lesion in the anterior myometrium. Color Doppler analysis revealed the presence of abnormal vessels consistent with an arteriovenous malformation. Typically this vascular abnormality had a turbulent pattern of arterial and venous flow with high peak velo...
Aincrease in the vascular resistance of virtually every organ system is a wellknown characteristic of hypertension, as modeled by spontaneously hypertensive rats (SHR) and renovascular hypertensive rats. However, the most important issue may be where in the macrovasculature and microvasculature of a given organ the greatest increase in resistance occurs. The relevance of this issue can be consi...
In the developing embryo the foregut is surrounded by a group of vascular structures of bilateral distribution connected with the branchial arches. Portions of these arches are obliterated to form the normally described aorta and great vessels. The ultimate persistence of only one main vascular arch, the left, as the aorta, permits the trachea and oesophagus to lie freely to its right side. Whe...
Introduction Accurate segmentation and appropriate visualization of the arteries and veins in the brain improve the detection and characterization of vascular abnormality such as cerebral aneurysm, arteriovenous malformation and tumor vascularity. Traditional 2D projection display of vascular images such as minimum-intensity projection (minIP) of veins in MRV offers limited visualization of com...
In the developing embryo the foregut is surrounded by a group of vascular structures of bilateral distribution connected with the branchial arches. Portions of these arches are obliterated to form the normally described aorta and great vessels. The ultimate persistence of only one main vascular arch, the left, as the aorta, permits the trachea and oesophagus to lie freely to its right side. Whe...
The pathogenesis of essential hypertension is multifactorial. Although the cause of elevated arterial pressure is unknown in most cases, the fundamental hemodynamic abnormality in hypertension is increased peripheral resistance primarily due to changes in vascular structure and function.1 These changes include arterial wall thickening and abnormal vascular tone, which are modulated by complex i...
The possible occurrence of asymptomatic retinal vascular damage was investigated in 87 hyperhomocysteinemic (plasma total homocysteine >13micromol/L) adult epileptic patients (46 M, 41 F; age 34.2+/-7.5 years; mean plasma homocysteine levels 29.8+/-15.4micromol/L; duration of epilepsy 11.5+/-2.4 years) with no other risk factors for atherosclerosis. Plasma total homocysteine (t-Hcy) levels were...
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