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A Doppler USG (ultrasonography), or Doppler ultrasound, is a non-invasive technique that allows doctors to assess the flow of blood through your blood vessels with the help of high-frequency sound waves. Unlike regular ultrasound which only produces images but is not able to estimate the blood flow, Doppler ultrasound uses a special mechanism that helps to see the blood moving through the blood vessels. This helps to detect any abnormality in the flow of blood and detect the blockage or obstruction responsible for it. 

3D-4D USG is a relatively new, yet highly advanced technology that is used for assessing and evaluating the fetal cardiovascular system allowing doctors to perform a real-time heart examination. This helps to detect any abnormality or defect while the child is still inside the womb. 

Doppler ultrasound can be of various different types like colour Doppler, power Doppler, spectral Doppler, duplex Doppler, and continuous wave Doppler. 

Uses of Doppler ultrasound
Doppler ultrasound is used for the diagnosis and assessment of cardiovascular obstructions that hinder normal blood flow. The procedure can help to detect a variety of heart diseases. 

  • Doppler ultrasound can be done along with an electrocardiogram to assess heart function
  • The procedure can help to detect any obstruction or blockage in blood flow
  • It can be used to detect vascular damage or defect
  • It can be used for the detection of narrow blood vessels which could be a sign of peripheral artery disease
  • It can be used for the detection of carotid stenosis
  • The procedure can be recommended for accessing the flow of blood following a surgical procedure
  • It can also be used for assessing the flow of blood to the fetus growing in a womb

Indications of Doppler ultrasound
Doppler ultrasound may be recommended in the following cases:

  • If the patient is experiencing the symptoms of a peripheral arterial disease like cramps or numbness in the lower limbs and a fall in body temperature. 
  • If the patient is experiencing the symptoms of heart problems like swelling in the limbs and abdomen, breathlessness and fatigue. 
  • If the patient is having a stroke
  • If the patient has sustained severe injuries to the blood vessels
  • If the patient is undergoing treatment for blood flow disorders
  • During pregnancy, if the doctors think that the blood supply to the growing foetus is hindered. 


  • You will be required to lie still on the examination table. 
  • A special gel will be applied to the concerned area to make it easier to movie transducer
  • The transducer generates sound waves, that bounce back after coming in contact with your blood vessels
  • The movement of the blood cells flowing in your blood vessels will alter the pitch of the sound waves, which is then recorded to generate the images
  • The procedure takes about 30 to 60 minutes. 

Why Eternal Hospital?
At Eternal Hospital, we have a highly qualified and dedicated team of experts who are always committed to providing the latest and most advanced medical care to all our patients. Being a trusted name in healthcare, we act compassionately while ensuring confidentiality to those who need it. We have set high standards in patient-centric premium care along with outstanding patient safety and exceptional maintenance in a timely manner. We adhere to the use of up to the minute innovations to offer state-of-the-art treatments to our patients with unparalleled results.

Meet Our Team

Dr. Mahipal Singh

Director & HOD - Radiology

Dr. Ritu Agarwal

Associate Director - Cardiac Imaging