What is it about?
With the help of the vector flow (v-flow) the direction and speed of the blood flow in the arterial and venous system can be represented very well by means of colour-coded vectors. If turbulence occurs in the context of stenoses or insufficiencies, undirected, long, red-coded vectors can be derived. A reflux occurring as a result of this can thus be made clearly visible. We showed this using the example of a valve insufficiency at the junction where the great saphenous vein meets the femoral vein, the so-called crosses.
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Why is it important?
Insufficiency in the area of the crosses is caused by varicosis, which affects many older people in particular. The consequences can include deep vein thrombosis, open legs and eczema. With the help of the vector flow, this insufficiency and the associated reflux can be made very clearly visible and the function of the valves can be assessed. But not only in the venous system but also in the arterial system a visualisation of turbulences within the vessels can be of use.
Perspectives
The vector flow is not only used in the venous but also in the arterial system. Insufficiencies as well as stenoses can be made visible very easily and quickly.
Sylvia Kammerer
Universitat Regensburg
Read the Original
This page is a summary of: Functional ultrasound imaging of the venous valve of the great saphenous vein in the area around the crosse using the novel vector flow technique, Clinical Hemorheology and Microcirculation, October 2020, IOS Press,
DOI: 10.3233/ch-209205.
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