Definition - What does Phased Array Technology mean? Ultrasound beams are used in phased array (PA) ultrasonic equipment, which is considered an advanced method of ultrasonic testing. This technology finds applications in medical science and non-destructive testing. This method is more accurate at finding flaws in manufactured materials such as welds.
A migraine is a medical condition which usually causes a pounding, throbbing headache on one side of the head. The pain may be very bad and hurt so much that a person may have a hard time doing anything. While most people who have migraines get a headache, not everyone does.
Migraine is the 3rd most prevalent illness in the world. Nearly 1 in 4 U.S. households includes someone with migraine. Amazingly, 12% of the population â including children â suffers from migraine. 18% of American women, 6% of men, and 10% of children experience migraines. Migraine is most common between the ages of 25 and 55. Migraine tends to run in families.