Radio frequency induced heating
During magnetic resonance imaging (MRI), electromagnetical waves are sent out from the MR scanner to the object inside the scanner, with a frequency between several tens to several hundreds of MHz. Because this falls in the range of radio frequencies, these waves are called radio frequency (RF) waves. The object as well as the surrounding tissue can be heated up, depending on the strength of the static magnetic field, the geometry and dimensions of the object, its position in the body, its orientation with regard to the MR scanner, and the duration of the scan. The measurement of RF induced heating can be conducted in the MR:comp laboratory.