ABSTRACT
The combination of magnetic resonance imaging (MRI) with positron emission tomography (PET) into an integrated MRI–PET device is considered to be enriching the field of molecular imaging. The main advantages of this new combination are the outstanding soft-tissue contrast of the anatomical and functional information from MRI combined with the high sensitivity of PET, which allows the observation of molecular. Developments in the new field of MRI-PET are oriented along several directions that are all related to the three major technical challenges: understanding and reducing the electronic interference, finding suitable approaches to system integration, and implementing accurate and reliable attenuation and motion-correction techniques. Both PET and MR imaging involve active and passive electronic circuits, which usually operate at a very low noise level. The term "equipment' comprises all devices that are necessary to put and maintain the animal in a state and position appropriate for imaging and to carry out the imaging operations.
