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Carotid artery stenosis is a leading cause of stroke, but timely diagnosis allows preventive treatment. Doppler ultrasound is the first-line screening test, measuring plaque and blood flow velocity. CTA provides detailed anatomic mapping for surgical planning. Learn when each test is indicated, how stenosis is graded, and what imaging findings indicate stroke risk.
Finding a brain aneurysm requires the right imaging test. CT angiogram (CTA) offers rapid, detailed views of blood vessels using radiation and contrast. MR angiogram (MRA) avoids radiation but may miss small aneurysms. Learn when CTA's speed matters, when MRA's safety is preferred, and which test your neurologist needs for accurate aneurysm detection.
