Venous Imaging Studies
Description: Venous Doppler uses sound frequency in a range higher than humans are able to hear to produce images of the blood vessels (veins) on a viewing screen. The blood flow through the veins is evaluated with Doppler and Colored Doppler. Color Doppler involves the use of standard ultrasound methods to produce a picture of a blood vessel. In addition, a computer converts the Doppler sounds into colors (typically red and blue) that are overlaid on the image of the blood vessel. These colors represent the speed and direction of blood flow through the vessel.
Indications: Venous Doppler demonstrates the veins in the arms and legs. It is able to demonstrate blood clots and the slowing or complete block of blood flow that clotting causes. These blood clots can break loose and cause a dangerous condition when they obstruct blood flow to the lungs. This condition is known as pulmonary embolism. Symptoms that are investigated with Venous Doppler include:
Pain, heaviness or aching sensation in the arms and legs.
- Swelling of an arm or leg
- Skin reddening
- Skin that is hot to the touch
Procedure: The room is usually darkened for the exam. A gel is applied to the area being examined to provide good contact for the handheld transducer. The transducer is placed on the skin and sound waves are sent into the body. These sound waves are reflected off the veins and are returned to the transducer. The echoes are converted electronically into images on a monitor. With Doppler and Color Doppler the sound waves reflected from the blood cells are converted into images that represent the blood flow in the vein and the speed and direction of the flow can be assessed by the physician. This procedure takes about 45 minutes.
Preparation: None necessary
* This test information is intended for educational purposes only. This should not replace medical advice from your healthcare provider. Please call your healthcare provider if you have any medical questions concerning your health. For any questions regarding procedures, please contact Advanced Diagnostic P.C. office at 989-799-5699