What is the role of ultrasound in the detection of blood clots?

Inside the Vein with Vascular Technologist Brian Sapp - Vein Network: The Detection of Blood Clots
Deep vein thrombosis (DVT) is the number three killer in the world by disease type. Many offices are missing 54% of the blood clots that walk into their facility. Learn what makes Vein Specialists different.
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Hi doc, may I ask what is the medicine or treatment for blood clots? Thank you