Ion irradiation is routinely used to implant impurities atoms into materials, especially semiconductors, to modify their properties. This process, usually known as ion implantation, is an important step in the manufacture of silicon integrated circuits.
Pulse oximetry is a procedure used to measure the oxygen level (or oxygen saturation) in the blood. It is considered to be a noninvasive, painless, general indicator of oxygen delivery to the peripheral tissues (such as the finger, earlobe, or nose).
If you have COPD and are using supplemental oxygen, pulse oximetry is an oxygen measurement technique you should know about. Learn about the benefits and drawbacks of pulse oximetry, and how to properly use a pulse oximeter at home.