J. Michaud

Publications25
h-index14
Citations516
Highly Influential Citations7
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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.
Architecture of a dual-modality, high-resolution, fully digital positron emission tomography/computed tomography (PET/CT) scanner for small animal imaging
Contemporary positron emission tomography (PET) scanners are commonly implemented with very large scale integration analog front-end electronics to reduce power consumption, space, noise, and cost.…
System Architecture of the LabPET Small Animal PET Scanner
To address modern molecular imaging requirements, a digital positron emission tomography (PET) scanner for small animals has been developed at Universite de Sherbrooke. Based on individual readout of…
Real time digital signal processing implementation for an APD-based PET scanner with phoswich detectors
TLDR
A highly parallel data acquisition system based on an integrated analog front-end and a high-speed fully digital signal processing section that directly samples the output of each preamplifier and feeds the sampled data into a field programmable gate array VirtexII PRO from Xilinx, which allows up to 64 channels to be processed simultaneously.
Time Discrimination Techniques Using Artificial Neural Networks for Positron Emission Tomography
Relevant information in positron emission tomography is currently being obtained mostly by analog signal-processing methods. New digital PET scanner architectures are now becoming available, which…
Sensitivity Increase Through a Neural Network Method for LOR Recovery of ICS Triple Coincidences in High-Resolution Pixelated- Detectors PET Scanners
Scanner sensitivity is often critical in high-resolution Positron Emission Tomography (PET) dedicated to molecular imaging. In neighboring pixelated detectors with individual readout, sensitivity…
Real time digital signal processing implementation for an APD-based PET scanner with phoswich detectors
Recent progress in advanced digital signal processing provides an opportunity to expand the computation power required for real time extraction of event characteristics in avalanche photodiode…
Crystal Identification Based on Recursive-Least-Squares and Least-Mean-Squares Auto-Regressive Models for Small Animal Pet
TLDR
A crystal identification method based on adaptive filter theory using an auto-regressive (AR) model is proposed to enable real time crystal identification in a noisy environment.
Experimental results of identification and vector quantization algorithms for DOI measurement in digital PET scanners with phoswich detectors
DOI measurement in phoswich PET scanners still relies mostly on traditional Pulse Shape Discrimination (PSD), transposed from analog electronics. PSD performance is limited in two conditions:…
The architecture of LabPET/spl trade/, 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 with one free-running ADC per channel, offering the opportunity to explore new digital signal processing algorithms borrowed to command and control theory, as well as advanced heuristics such as neural networks.
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