CT angiography (CTA) and traditional (catheter) angiography both image blood vessels but differ in method and use. CTA uses CT scans and IV dye, while traditional angiography inserts a catheter with dye directly into arteries.
Key Differences
| Aspect | CT Angiography (CTA) | Traditional Angiography |
|---|---|---|
| Invasiveness | Non-invasive; IV dye only | Invasive; catheter via groin/wrist |
| Procedure Time | 10-15 minutes | 30-60 minutes |
| Risks | Low; mainly dye allergy, radiation | Higher; bleeding, vessel damage |
| Accuracy | 85-90% for blockages; good screening | Gold standard; 95-99% precise |
| Follow-up Potential | Diagnostic only | Allows instant treatment like stenting |
| Cost (Kenya est.) | KES 50,000-150,000 | KES 200,000-400,000 [prior context] |
| Recovery | Immediate; no bed rest | 4-6 hours flat; 1-2 days rest |
When to Use Each
CTA suits initial checks for low-risk patients. It rules out disease quickly without cuts.
Traditional angiography fits confirmed issues. Doctors treat during the test.
CTA exposes to radiation but skips catheter risks. Choose based on symptoms and doctor advice