What is An Doppler Ultrasound?

A Doppler ultrasound is a noninvasive test that can be used to estimate the blood flow through your blood vessels by bouncing high-frequency sound waves (ultrasound) off circulating blood in deferent body regions as :
• Upper limb.
• Lower limb.
• Neck vessels.
• Portal vein.
• Renal artery.
• Abdominal aorta.
• Scrotum.
• Penile vessels.

Why do I need Doppler Ultrasound?

• Your doctor may suggest a Doppler ultrasound exam if you show signs of decreased blood flow in the arteries or veins of your legs, arms, or neck.
• A reduced amount of blood flow may be due to a blockage in the artery, a blood clot inside a blood vessel, or an injury to a blood vessel.
Your doctor may order a Doppler ultrasound exam if you show signs of:
• deep vein thrombosis (DVT),
• superficial thrombophlebitis,
• arteriosclerosis,
• Thromboangitis obliterans.
• Vascular tumors in your arms or legs.
• A Doppler ultrasound can help determine the blood pressure within your arteries. It can also show how much blood is currently flowing through your arteries and veins.

Any preparation needed?

• There’s no preparation required for Doppler ultrasound.
• For some scans, such as renal artery Doppler, you should not eat anything for certain period of time (12 hours) before the exam.
• If you’re a smoker stop smoking for several hours before the test. Smoking causes your blood vessels to narrow, which can affect the results of your test.