Speaker
Dr
Jorge A. Neves
(LIP - Laboratory of Instrumentation and Experimental Particle Physics, Lisbon, Portugal)
Description
We present a feasibility study of the ClearPEM technology for simultaneous PET-MR imaging. The basic ClearPEM detector module is composed of 12 LYSO:Ce crystal matrices, each with 4x8 individual crystals (2x2x20mm3) optically coupled on both ends to S8550 hamamatsu APD arrays that are read out by two front-end boards. Each board integrates two low-noise ASICs of 192 channels each for APD readout, pulse amplification and shaping. The board also performs sequential analog-to-digital conversion and data serialization and transmission to the off-detector DAQ system.
Mutual electromagnetic interference effects between both systems were evaluated on a 7T MR scanner by characterizing the response behavior and the tolerance of the ClearPEM detectors and front-end electronics to the pulsed RF power and the switched magnetic field gradients; and by analyzing the MR system performance degradation from noise pickup into the RF receiver chain, and from magnetic susceptibility artifacts caused by PET front-end materials.
In the present work we will also present the first detection performance results of the ClearPEM module working simultaneously with a MRI acquisition; and our prototype developments on a new approach of a ClearPEM based detector for simultaneous small-animal PET-MR imaging at ultra-high magnetic fields (9.4 and 14.1T).
| quote your primary experiment | PET-MR Imaging |
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Author
Dr
Jorge A. Neves
(LIP - Laboratory of Instrumentation and Experimental Particle Physics, Lisbon, Portugal)
Co-authors
Dr
Arthur W. Magill
(Laboratory of Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland)
Dr
Catarina Ortigão
(LIP - Laboratory of Instrumentation and Experimental Particle Physics , Lisbon, Portugal)
Mr
José C. Silva
(LIP - Laboratory of Instrumentation and Experimental Particle Physics , Lisbon, Portugal)
Prof.
João Varela
(LIP - Laboratory of Instrumentation and Experimental Particle Physics , Lisbon, Portugal)
Mr
Ricardo Bugalho
(LIP - Laboratory of Instrumentation and Experimental Particle Physics, Lisbon, Portugal)
Prof.
Rolf Gruetter
(Laboratory of Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland)
Mr
Rui Silva
(Laboratory of Functional and Metabolic Imaging, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland)
