Color Doppler ultrasound is an imaging technique which is used to provide visualization of the blood flow in the arteries and the veins. With the advent of Medical Technology, CT and MRI angiography has emerged as the preferred diagnostic modality for study of blood vessels. In angiography iodine based contrast agent is used which is harmful for kidneys. In comparison a colour doppler study is perfectly safe even for pregnant women as there is no radiation involved and safe for patients of kidney disease as there is no iodine involved.
Types Of Colour Doppler Tests
At Suraj Diagnostic Centre, we perform colour doppler to:
Find out the blood clots and blocked blood vessels in almost any part of the body
Evaluate leg pain that may be caused by a condition caused by atherosclerosis of the lower extremities
Evaluate blood flow after a stroke
Evaluation of a stroke can be done through a technique called transcranial Doppler (TCD) ultrasound
Evaluate abnormal veins a variety of ultrasound scans for various organs. A list of such tests are as follows:
Carotid Color Doppler
Carotid Color Doppler test is used to detect narrowing of the arteries in the neck (the carotid arteries) that supply blood to the brain. The test is known is CIMT - Carotid Intima Mean Thickness. This test is extremely useful in early detection and prevention of future stroke.
Vascular Color Doppler
Several Medical conditions causes the arteries and veins to become narrow. This reduces the blood supply to different body parts. Arterial and Venous Colour Doppler studies are done mostly for the upper and lower limbs to determine the blockages in the vessels and determine the extent of narrowing of these vessels. This is an excellent test for the vessels. However CT or MR Angiography of the vessels is definitely a more advanced study
Doctors often use Doppler Ultrasound during pregnancy to check fetal umbilical blood flow, placental blood flow and blood flow in the heart and brain. Using the Doppler Ultrasound results, doctors can determine if restricted blood flow due to sickle cell anemia, RH sensitization or restricted blood vessels is to blame for fetal abnormalities.
Transcranial Doppler for children
A transcranial Doppler (TCD) ultrasound evaluates both the direction and velocity of the blood flow in the major cerebral arteries of the brain. This type of ultrasound exam is also used during surgical procedures to monitor blood flow in the brain. TCD may be used alone or with other diagnostic exams such as magnetic resonance imaging (MRI), magnetic resonance angiography (MRA) and computed tomography (CT) scans.
Prevent Breast Cancer
Dr Sumita Singh is talking about the importance of Breast Ultrasound over Mammography in the females below the age of 40 years and how this can result in early detection of Breast Cancer in women below the age of 40 who have dense breasts and Mammography doesn't give accurate information in such females.
However Mammography is the best diagnostic modality for scanning the breasts in women above the age of 40 years. Excessive reliance on these diagnostic machines is also not a good idea and one must see a breast specialist before deciding to go for any kind of testing