R. Fontaine

Publications208
h-index25
Citations2,601
Highly Influential Citations43
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Performance evaluation of the LabPET™ APD-based digital PET scanner
TLDR
The LabPETTM is a fully digital avalanche photodiode (APD) based PET scanner designed for state-of-the- art molecular and genomic imaging of small animals and demonstrated with in vivo images of rats and mice.
The Hardware and Signal Processing Architecture of LabPET™, a Small Animal APD-Based Digital PET Scanner
TLDR
A new fully digital APD-based scanner architecture is proposed wherein nuclear pulses are sampled directly at the output of the Charge Sensitive Preamplifier (CSP) with one free-running ADC per channel to explore new digital signal processing algorithms borrowed from other fields like command and control theory, as well as advanced heuristics such as neural networks.
Performance evaluation of the LabPET12, a large axial FOV APD-based digital PET scanner
The LabPET12 is the latest version of LabPET¿ avalanche photodiode (APD)-based digital scanners, having an 11.4 cm axial field of view and 9216/4608 crystals/electronic readout channels to achieve…
A Sub-Nanosecond Time Interval Detection System Using FPGA Embedded I/O Resources
TLDR
A Sub-Nanosecond Time Interval Detection System, able to overcome process and temperature (PT) variations, was designed and implemented in an FPGA and uses embedded PT invariant digital delay lines and deserializers included in I/O ports, along with a stable clock oscillator resulting in low logic usage.
Front-end electronics for the RatCAP mobile animal PET scanner
TLDR
A mathematical model of the timing resolution as a function of the noise and slope at the discrimination point as well as the photoelectron statistics was developed and validated and three ASIC prototypes implementing part of the electronics were sent to fabrication.
Imaging performance of LabPET APD-based digital PET scanners for pre-clinical research.
TLDR
The results obtained with two energy window settings confirm the relevance of high-efficiency and high-resolution operating modes to take full advantage of the imaging capabilities of the LabPET scanners for molecular imaging applications.
Digital SiPM channel integrated in CMOS 65 nm with 17.5 ps FWHM single photon timing resolution
A 2D Proof of Principle Towards a 3D Digital SiPM in HV CMOS With Low Output Capacitance
TLDR
A new integrated digital SiPM electronic architecture is presented that aims to replace conventional analog SiPM with the added benefits of a significantly lower and constant output capacitance as well as immunity to SPAD to SPad gain variation on the single photon resolution while providing an analog-like output signal waveform representing the sum of all triggered SPADs.
TDC Array Tradeoffs in Current and Upcoming Digital SiPM Detectors for Time-of-Flight PET
Radiation detection used in positron emission tomography (PET) exploits the timing information to remove background noise and refine position measurement through time-of-flight information. Fine time…
FPGA-Based Self-Calibrating Time-to-Digital Converter for Time-of-Flight Experiments
TLDR
The architecture of a FPGA-based self-calibrating Time to Digital Converter, specifically intended to measure the width of an input pulse, is described, which consists of two controllable ring oscillators with a very small difference in their frequencies.
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