Doppler ultrasound scanning of carotid artery

Doppler ultrasound scanning of carotid artery


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Doppler ultrasound scan of neck. Woman patient has the carotid artery in her neck scanned by doppler ultrasound. The operator holds a small transducer on the patient's neck while examining blood flow (red) in the artery, as seen on the screen. Doppler ultrasound scanning can be used to detect turbulence in the flow of blood around the body, which might reveal narrowing of arteries (atherosclerosis), clots or aneurysms (blood vessel swellings). Here the patient was normal. The transducer emits high-frequency sound waves which reflect off moving blood. The technique is harmless and causes no pain.

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