We describe the design of a prototype preclinical PET/MR system capable of scanning small animals up to the size of a rabbit. The scanner uses highly sensitive and fast LSO/silicon-photomultiplier arrays as detector elements, direct digitization with a dedicated ASIC and integrated digital signal processing. Special measures are taken to improve the MR-compatibility of this design. Measurements of a prototype detector were performed inside 1.5T and 3T MRI-systems. Even under high gradient-slew-rates and RF-pulses disturbance energy- and coincidence timing-resolution of ~18% and 530ps (FWHM) respectively have been measured.
A Preclinical PET/MR Insert for a Human 3T MR Scanner
Piemonte, Claudio;Zorzi, Nicola;Melchiorri, Mirko;
2009-01-01
Abstract
We describe the design of a prototype preclinical PET/MR system capable of scanning small animals up to the size of a rabbit. The scanner uses highly sensitive and fast LSO/silicon-photomultiplier arrays as detector elements, direct digitization with a dedicated ASIC and integrated digital signal processing. Special measures are taken to improve the MR-compatibility of this design. Measurements of a prototype detector were performed inside 1.5T and 3T MRI-systems. Even under high gradient-slew-rates and RF-pulses disturbance energy- and coincidence timing-resolution of ~18% and 530ps (FWHM) respectively have been measured.File in questo prodotto:
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