Coronary Artery CT Angiography

Procedure Overview

Coronary Artery CT Angiography at Gangnam Heartscan Healthcare Center utilizes a high-speed 128-channel Multi-Detector Computed Tomography (MDCT) scanner to capture detailed three-dimensional images of the coronary arteries. The examination evaluates both vascular calcification (coronary artery calcium analysis) and luminal narrowing caused by calcified or non-calcified atherosclerotic plaques.

Clinical Indications

• Early detection of coronary artery disease and vascular calcification
• Evaluation of atypical chest pain, exertional dyspnea, or suspected angina
• Cardiovascular risk stratification in individuals with hypertension, diabetes, dyslipidemia, smoking history, or family history of premature heart disease
• Follow-up assessment of coronary anatomy as recommended by a cardiologist

How the Screening Works

1. Pre-Scan Preparation & Heart Rate Check: Vital signs and heart rate are checked; when clinically indicated, medication may be given to stabilize heart rate for optimal image sharpness.
2. Coronary Calcium Analysis & Contrast Scan: Using ECG-gated 128-channel MDCT acquisition, the scanner quantifies coronary calcium and captures high-resolution angiographic images during intravenous contrast administration.
3. 3D Reconstruction & Specialist Reading: Diagnostic radiologists and cardiologists review multi-planar and 3D vessel reconstructions to assess plaque burden and luminal patency.

Preparation & Precautions

• Fast from solid food for at least 4 to 6 hours prior to a contrast-enhanced scan; clear water intake should follow pre-appointment instructions.
• Avoid caffeine (coffee, energy drinks, green tea) and smoking on the morning of the exam, as they can elevate heart rate and affect ECG-gated image quality.
• Inform the medical team in advance if you have a history of iodinated contrast allergy, kidney disease, asthma, or if you take metformin for diabetes.