Doppler ultrasound of the veins of the upper limbs
Ultrasound examination of the superficial and deep veins of the upper limb - assessing blood flow in the veins using colour Doppler - colour imaging and spectral Doppler - flow in the form of a curve showing the speed of the flow and its nature, allows their efficiency to be determined, the wall of the vein is visualised - the elasticity and thickness of the wall is assessed - fibrosis and its thickening may occur e.g. after thrombosis, during the examination compression tests are performed - this allows venous thrombosis to be confirmed/excluded.