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.
Split and merge into it. Answered by The Community. Making the world better, one answer at a time. The first motion detector was invented by Russian Leon Theremin in the year 1920, but the first motion detectors used as a security device were developed in early 1950's by Samuel Bagno.The basis of these first detectors was the Doppler effect and ultrasonic waves application.plit and merge into it. Answered by The Community. Making the world better, one answer at a time. The first motion detector was invented by Russian Leon Theremin in the year 1920, but the first motion detectors used as a security device were developed in early 1950's by Samuel Bagno.