Optimal management of patients with asymptomatic carotid artery stenosis remains unclear. Although 2 high-quality randomized clinical trials demonstrated reductions in ispsilateral stroke rates in patients without symptoms after carotid endarterectomy, medical therapy of asymptomatic carotid artery stenosis has reduced rates of stroke to approximately 1% per year, raising questions about the ge...

BACKGROUND AND PURPOSE Moyamoya disease is a well described phenomenon. This pattern of collateralization associated with isolated middle cerebral artery stenosis and the natural history of this entity have not been well described. METHODS Cerebral angiograms and CT angiograms performed between August 2004 and August of 2006 demonstrating moyamoya collateralization were retrospectively review...

PURPOSE To evaluate the diagnostic performance of left coronary bifurcation angles and plaque characteristics for prediction of coronary stenosis by dual-source CT. METHODS 106 patients suspected of coronary artery disease undergoing both coronary computed tomography angiography (CCTA) and invasive coronary angiography (CAG) within three months were included. Left coronary bifurcation angles ...

CONTEXT Therapeutic trials generally have not distinguished outcomes of stroke according to cause. OBJECTIVE To determine whether stroke and subsequent disability was of large-artery, lacunar, or cardioembolic origin in patients with different degrees of symptomatic and asymptomatic carotid stenosis. DESIGN Observational study of prospective data collected from the North American Symptomati...

OBJECTIVES To compare the accuracy of dobutamine stress echocardiography (DSE) and simultaneous 99mTc sestamibi (MIBI) single-photon emission CT (SPECT) imaging for the diagnosis of coronary artery stenosis in women. PATIENTS Seventy women with limited exercise capacity referred for evaluation of myocardial ischemia. METHODS DSE (up to 40 microg/kg/min) was performed in conjunction with str...

AIMS To investigate the clinical predictors of coronary atherosclerosis and to assess the utility of maximum-IMT for predicting coronary atherosclerosis in asymptomatic type 2 diabetic patients. METHODS One hundred one Japanese patients with type 2 diabetes underwent computed tomography coronary angiography. Definitions of coronary artery stenosis and vulnerable coronary plaque were luminal n...

Background and Objective: The aim of this study was to analyze our indications, surgical procedures, and clinical outcomes of patients undergoing reoperation after surgical correction of tetralogy of Fallot (TOF). Methods: Thirty seven consecutive patients who underwent reoperation late after intra-cardiac repair of TOF within a period of 10 years were assessed. Results: The most co...

BACKGROUND The purpose of this study was to assess the accuracy of oculopneumoplethysmography (OPG) for the diagnosis of carotid artery stenosis both alone and in conjunction with carotid magnetic resonance angiography (MRA). METHODS This retrospective study reviewed patients who had undergone both OPG and digital subtraction angiography (DSA, 90 patients, 174 vessels) within two weeks to det...

Dilatation of the pulmonary artery occurs frequently in cases of valvular pulmonary stenosis and is often called "poststenotic." We determined the diameter of the pulmonary artery angiocardio-graphically and compared this with the data obtained by heart catheterization in cases of pulmonary stenosis and of idiopathic dilatation of the pulmonary artery. Features are presented which constitute ar...

Cardiovascular diseases were the main cause for loosing lives in last decades due to restricted blood flow states vessels areas. Numerical investigations have been conducted as aim of this work examine flow, and wall shear stresses adjacent mono stenosis up different degrees involved main, side distal branches well observe pulsatile left coronary artery through various percentage stenosis. Both...