Differences between CT angiography and traditional angiography

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

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