تصوير الأوعية بالأشعة المقطعية المتقدم في دبي

CT angiography (CTA) combines the speed of computed tomography with intravenous contrast enhancement to produce detailed three-dimensional images of blood vessels throughout the body. During the scan, iodinated contrast dye is injected through a vein in the arm and rapidly circulates through the arterial and venous systems. The CT scanner captures hundreds of cross-sectional images in seconds, which are then reconstructed by powerful computers into 3D vascular maps. This allows radiologists to evaluate vessel calibre, detect stenosis, identify aneurysms, and map vascular anatomy with sub-millimetre precision.

Coronary CT angiography (CCTA) has revolutionised the non-invasive assessment of coronary artery disease. With sensitivity exceeding 95% for significant stenosis, CCTA allows cardiologists to visualise the coronary arteries without the risks and recovery time of invasive catheter angiography. The scan is particularly valuable for patients with chest pain and intermediate pre-test probability of coronary disease, as a normal CCTA can effectively rule out significant blockages. Modern cardiac-gated protocols synchronise image acquisition with the heartbeat, producing motion-free images of even the smallest coronary branches.