Nuclear magnetic resonance imaging (MRI) has become one of the most important developing directions of medical imaging because of its advantages of high resolution, multi axis imaging and non-radioactivity.
Nuclear magnetic resonance imaging (MRI) has become one of the most important developing directions of medical imaging because of its advantages of high resolution, multi axis imaging and non-radioactivity. RF power amplifier is one of the key component of MRI system, its main function is to enlarge the weak signal of specific frequency to a larger power, and then radiate out the signal through the launch coil, to excite the hydrogen atoms in the human tissues, make the hydrogen atoms to turn at different angles, and generate the phenomenon of magnetic resonance.