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A front-end readout Detector Board for the OpenPET electronics system.

W-S Choong¹, F Abu-Nimeh¹, W W Moses¹

¹Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A.

Journal of Instrumentation : an IOP and SISSA Journal

|May 3, 2016

Summary

This summary is machine-generated.

We developed a 16-channel Detector Board for the OpenPET electronics system, enhancing nuclear medical imaging. This board digitizes signals, extracts pulse height, and time-stamps data for advanced processing like crystal lookup and DOI calculation.

Keywords:

Analog-to-digital converter Field programmable gate array Positron emission computed tomography Time-of-flight Time-to-digital converter

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Area of Science:

Nuclear Medical Imaging
Electronics Engineering
Computer Engineering

Background:

Developing advanced nuclear medical imaging systems like Positron Emission Tomography (PET) and Single-Photon Emission Computed Tomography (SPECT) relies heavily on sophisticated electronics.
The OpenPET electronics system aims to provide a flexible, scalable, and high-performance solution for common electronics requirements across various detector designs.
Analog signals from medical imaging detectors share similar characteristics, enabling a unified approach to analog signal processing.

Purpose of the Study:

To report the development of a 16-channel front-end readout board, a key component of the OpenPET electronics system.
To detail the design and functionality of the Detector Board for processing analog signals from medical imaging detectors.
To demonstrate the board's capability in digitizing signals and extracting essential data for further analysis.

Main Methods:

The 16-channel Detector Board digitizes each analog signal using a continuously sampled analog-to-digital converter (ADC).
A field-programmable gate array (FPGA) processes the digitized signals to extract pulse height information.
A leading-edge discriminator generates a timing edge, which is time-stamped by a time-to-digital converter (TDC) within the FPGA.

Main Results:

The developed board successfully processes signals from 16 channels, providing digitized data.
Pulse height information is accurately extracted from each signal.
Time-stamping of signal edges is performed by the integrated TDC, enabling precise timing measurements.

Conclusions:

The 16-channel Detector Board is a functional component of the OpenPET electronics system.
The board's digital information output facilitates advanced processing tasks such as crystal lookup and Depth of Interaction (DOI) calculation.
This development contributes to the creation of high-performance, scalable electronics for nuclear medical imaging.