Alternatively, IVC filters can be placed at the bedside either using fluoroscopy or transabdominal or intravascular ultrasound. Knowledge of the normal and variant anatomy of the vena cava is important for successful placement of vena cava filters and prevention of complications.
Welder's Glass. Welder's Shade Glass. A heat resistant grey-green tinted glass made to provide the correct eye protection for every welding operation. The shade numbers 1-14 refer to the density needed for the different welding operations. The higher the number, the darker the shade. Stock sheet size is 0.108 thick in Density 3 through Density 14.
The advantage to the solar cell is that the welder does not have to remember to turn the helmet off after use. For less hazardous types of welding, such as torch brazing, light electric, and spot welding, goggles with a shade of 5.0 can be convenient. Safety glasses equipped with 1.7 to 3.0 lenses also can be useful in situations in which sparks and spatter are not a concern.