What is Cardiac CT Angiography?
A cardiac CT angiogram (CCTA) is a non-invasive imaging test that uses iodinated contrast dye and high-resolution CT scanning to visualize coronary arteries and detect blockages.
Non-Invasive
Detailed visualization of coronary anatomy without catheter insertion using advanced CT technology.
High Resolution
Submillimeter resolution showing plaque, stenosis severity, and detailed vessel anatomy.
Fast & Accurate
Complete scan in seconds with >95% sensitivity for detecting significant blockages.
Pre-Scan Requirements
Critical: Heart Rate Control
Target heart rate is <65 BPM. You may be given beta-blockers. Arrive early for monitoring. Avoid caffeine!
🚫 AVOID (12h Prior)
- Caffeine: Coffee, tea, chocolate, energy drinks.
- Smoking: Increases heart rate.
- Viagra/Cialis: Stop 48h prior (interaction with nitrates).
✅ DAY OF SCAN
- Arrive Early: 60-90 mins prior.
- Hydration: Drink water before and after.
- Medications: Bring a list.
Understanding Results
Normal (CAD-RADS 0)
No plaque or stenosis found. Very low risk of cardiac events. Preventative lifestyle recommended.
Abnormal (CAD-RADS >0)
Plaque detected. Severity ranges from mild (non-obstructive) to severe (obstructive). Further testing or treatment may be needed.
Stenosis Grading
- 0% No disease.
- 1-49% Mild disease (Non-obstructive). Medical management.
- 50-69% Moderate disease. Potential ischemia, may need stress test.
- ≥70% Severe disease. Likely flow-limiting, referral to cardiology.