Jugular venous monitoring (necessary during chemically induced coma only). The problem with increased ICP is that the fluid under pressure tends to deform the brain itself and pushes tissue in such a way as to cause injury to the brain itself. A MRI or CT taken at the emergency room or during follow-up care, can often show the shifting of the tissue because of the pressure.
Electron beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact.
On the other hand, if your test involves a less ambitious weld, such as a fillet weld in the vertical position, you would be certified for 3F welding and lower, but not 4F, 1G, 2G, 3G, or 4G. Of course, veteran pipe welders can do much better than a 4G certification. The highest level for them is usually 6G, which means they can weld 360 degrees around a pipe that doesn't move. Producing this weld to the satisfaction of a certified welding inspector is tough sledding for a beginner.