A simultaneous dual modality PET/MRI scanner includes a magnet employed to produce a magnetic field suitable for magnetic resonance imaging, a radiofrequency coil, and a ring tomograph disposed within the magnetic field produced by the magnet. The ring tomograph contains a scintillator layer which is coupled to a detection array, which in turn is coupled to a front-end electronic array, which has a preamplifier and a shaper network for conditioning the detection signal.
From the patent abstract: A combined PET/MRI scanner generally includes a magnet for producing a magnetic field suitable for magnetic resonance imaging, a radiofrequency (RF) coil disposed within the magnetic field produced by the magnet and a ring tomograph disposed within the magnetic field produced by the magnet. The ring tomograph includes a scintillator layer for outputting at least one photon in response to an annihilation event, a detection array coupled to the scintillator layer for detecting the at least one photon outputted by the scintillator layer and for outputting a detection signal in response to the detected photon and a front-end electronic array coupled to the detection array for receiving the detection signal, wherein the front-end array has a preamplifier and a shaper network for conditioning the detection signal.
A dual modality PET/MRI scanner will be extremely useful in studies such as in vivo analysis of complex metabolic systems, validation of functional MRI techniques for brain mapping and in development of new pharmaceuticals such as psycho-active drugs.
The technology provides a MRI scanner combined with a PET scanner whose output is not detrimentally affected by the magnetic fields produced by the MRI scanner. The technology allows one to simultaneously realize the diagnostic benefits of using PET the MRI imaging techniques.
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- Poornima Upadhya (631) 344-4711
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