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What does red dots mean on a ultrasound

A 46-year-old member asked:
Dr. S. Smiley Thakur
Nephrology and Dialysis 32 years experience
Doppler: A regular ultrasound shows shades of black and white to identify kidney sizes and structures. A doppler senses flow to (red) and from (blue) the pro... Read More
Dr. Michael Braun
Radiology 36 years experience
Color Doppler flow: I assume that you are looking at the us images. Red and blue are blood flow in the kidney arteries and veins as seen on doppler exam. Done to make sur... Read More
Dr. Cristin Dickerson
Diagnostic Radiology 33 years experience
Blood Flow: The red and blue dots are Doppler signal, they indicate blood flow on a renal ultrasound. The kidneys are very vascular organs since they filter blood... Read More

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A 45-year-old member asked:
Dr. Paxton Daniel
Radiology 33 years experience
Really not much: By convention the red usually means blood flow toward the ultrasound transducer and blue is flow away.
A 53-year-old male asked:
Dr. James Lin
A Verified Doctoranswered
Urology 52 years experience
May be...: The presence of red or blue dots on Doppler ultrasound study merely gives a rough indirect saying if arterial or venous blood there; they may not say ... Read More
Dr. Saptarshi Bandyopadhyay
Hospital-based practice 22 years experience
False color-chk: The red & blue dots r most likely the false color signals from the Doppler mode of the ultrasound (US) machine. Doppler US helps determine blood f... Read More
A 31-year-old member asked:
Dr. Alfred Parkhill Hand
Radiology 22 years experience
Doppler: Those are images with doppler of the blood flow in hepatic vessels.
A 36-year-old member asked:
Dr. Walter Kobasa
Obstetrics and Gynecology 38 years experience
Blood flow: The dots are the arterial blood flow(red) venous (blue).
A 18-year-old female asked:
Dr. Louise Andrew
A Verified Doctoranswered
Emergency Medicine 47 years experience
Depends: On ultrasound, typically the color mode gives an indication of blood supply to an area. So seeing red, particularly fluctuating red, in many machines... Read More
A 37-year-old female asked:
Dr. Richard Romano
Internal Medicine 10 years experience
Calf pain : Calf pain can be from the muscle or from problems with the nerve that connects and controls it. The nerve controlling the calf muscle comes from the b... Read More
A 30-year-old female asked:
Dr. David Tolstrup
Family Medicine 31 years experience
Achilles tendonitis?: OK so if your ultrasound was 'OK' then we can safely assume this is not a blood clot. This may be Achilles Tendonitis. Check here to see if your sympt... Read More
A 27-year-old female asked:
Dr. Shauntelle Bonman
Family Medicine 13 years experience
Further questions: 1. What provokes the pain (movement, lifting, etc.) 2. What improves the pain (movement, etc.) 3. Any muscle weakness? 4. What sort of work do you do?... Read More
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