Satellite C-band usually transmits around 6 GHz and receives around 4 GHz. It uses large (2.4- 3.7 meter) antennas. These are the large white domes that you see on top of the cruise ships and commercial vessels.
Inferior Vena Cava Filter Placement and Removal. 1  During Inferior Vena Cava (IVC) filter placement, a filtering device is placed within the IVC, a large vein in the abdomen that returns blood from the lower body to the heart. Blood clots in the veins of the legs and pelvis can occasionally travel to the lungs where they may cause a pulmonary embolism or blockage.
An inferior vena cava (IVC) filter is a device that is deployed into the IVC with the intention of disrupting the flow of embolic material from a distal venous site in the lower extremities to the central cardiopulmonary venous system. IVC filters are placed to prevent the acute onset of pulmonary embolism.2.. Inferior vena cava (IVC) filters are used to prevent acute pulmonary embolism (PE), a common and preventable entity with significant clinical consequences.