background vascular ring is less than 1% of congenital heart disease. double aortic arch (daa) is the most common form of it.  its detecting is important because of the effects of pressure on the esophagus and trachea. case report in this study, three children suffering from double aortic arch with symptoms of dysphagia and recurrent aspiration, which in two cases had led to cardiac arrest, wer...

Diagnosis and management of coronary artery disease represents major challenges to our health care system, affecting millions of patients each year. Until recently, the diagnosis of coronary artery disease was possible only through cardiac catheterization and invasive coronary angiography. To avoid the risks of an invasive procedure, stress testing is often employed for an initial assessment of...

Congenital variations and anomalies of the aortic arch are important entity in vascular imaging. Most them asymptomatic. About 30-40% presents with tracheo-oesophageal symptoms like dyspnea dysphagia. A 27 year-old female presented persistent dysphagia for 6 months duration cause was right sided aberrant left subcalvian artery from Kommerell’s diverticulum. The diagnosis made through combinatio...

The presence of myocardial ischemia is the most important prognostic factor in patients with ischemic heart disease. Fractional flow reserve (FFR) is a gold standard invasive method used to detect the stenosis-specific myocardial ischemia. FFR-guided revascularization strategy is superior to angiography-guided strategy. The recently developed hyperemia-free index, instantaneous wave free ratio ...

Multislice computed tomography (CT) angiography has been increasingly used in the detection and diagnosis of coronary artery disease because of its rapid technical evolution from the early generation of 4-slice CT scanners to the latest models such as 64-slice, 256-slice and 320-slice CT scanners. Technical developments of multislice CT imaging enable improved diagnostic value in the detection ...

Abstract: Optical coherence tomography is a non-invasive method of imagining the anterior and posterior segment eye. It commonly used in ophthalmic practice to diagnose monitor various pathologies eyeball. angiography (OCTA) useful tool visualize entire retinal choroidal microvasculature, allowing assessment perfusion without intravenous dye administration.

BACKGROUND AND PURPOSE Given the current high quality and usefulness of noninvasive cerebrovascular imaging, invasive angiographic evaluation of the cerebrovascular system is justified if the procedural risk for a neurologic complication is far below the anticipated benefit. The purpose of this study was to evaluate the safety of diagnostic cerebral angiography provided by a dedicated neurointe...

Figure 1. CT angiography workflow. CT angiography (CTA) allows arteries and veins in the brain and neck region to be made visible in a way that is significantly less invasive than conventional angiography. To fully comprehend the complex geometry of the vessels, a set of CTA images is often visualized using maximum intensity projection (MIP) or volume rendering (VR). In a MIP or VR image, howev...