An MRI (or magnetic resonance imaging) scan is a radiology technique that uses magnetism, radio waves, and a computer to produce images of body structures.The MRI scanner is a tube surrounded by a giant circular magnet. The patient is placed on a moveable bed that is inserted into the magnet.n MRI scan can be used as an extremely accurate method of disease detection throughout the body and is most often used after the other testing fails to provide sufficient information to confirm a patient's diagnosis. In the head, trauma to the brain can be seen as bleeding or swelling.
Another type of smoke detector was invented by NASA for use in space. The first edition of this device was introduced to the Skylab in 1973. This was necessary to to the requirement of adjustable sensitivity for the space station.
Hon Lik worked day and night to realize his dream. In 2004, he finally invented the electronic cigarette. It was a small battery powered device that delivered nicotine liquid solution in a vaporized form, fog, when inhaled air activates an atomizer. It had a red light at the tip that lighted up with each drag. It did not contain the substances commonly found in regular cigarettes, such as, tar and other cancer causing agents. Hon Lik gave one of the first prototypes to his father, who was also a heavy tobacco smoke and dying of lung cancer at that time. His father enjoyed the electronic cigarette and was happy that with the device there would be fewer sons watching their fathers dying of lung cancers.