AVALANCHE PHOTODIODES FOR HIGH-RESOLUTION PET IMAGING SYSTEMS

R. Bugalho, B. Carriço, C. S. Ferreira, M. Ferreira, R. Moura, C. Ortigão, J. Pinheiro, P. Rodrigues, J. C. Silva, A. Trindade, J. Varela

Abstract

A high-resolution Positron Emission Tomography (PET) scanner prototype, named Clear-PEM, was developed by the Portuguese PET Consortium in the framework of the Crystal Clear Collaboration (CCC). This scanner is a PET prototype dedicated for breast cancer imaging mammography, based on a novel readout scheme constituted by fine-pitch scintillator crystals, avalanche photodiodes (APD), low-noise high-gain frontend amplifiers and a reconfigurable FPGA-based electronics readout system. The Clear-PEM scanner is designed to exam both the breast and the auxiliary lymph node areas, aiming at the detection of tumours down to 2 mm in diameter. The prototype has two planar detector heads, each composed of 96 detector modules. Each detector module is composed of a matrix of 32 identical 2x2x20 mm3 LYSO:Ce scintillator crystals, read at both ends by Hamamatsu S8550 APD arrays (4x8) for Depth-of-Interaction (DOI) capability. The APD arrays were characterized through the measurement of gain and dark current as a function of bias voltage, under controlled conditions. A set of 984 APD arrays followed a well defined quality control (QC) protocol, aiming at the rejection of arrays not complying with the defined specifications. From the total of 984, only 1 (0.1%) was rejected, reassuring the trust in these detectors for prototype assembly and future applications.

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Paper Citation


in Harvard Style

Bugalho R., Carriço B., S. Ferreira C., Ferreira M., Moura R., Ortigão C., Pinheiro J., Rodrigues P., C. Silva J., Trindade A. and Varela J. (2009). AVALANCHE PHOTODIODES FOR HIGH-RESOLUTION PET IMAGING SYSTEMS . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009) ISBN 978-989-8111- 64-7, pages 31-38. DOI: 10.5220/0001432900310038


in Bibtex Style

@conference{biodevices09,
author={R. Bugalho and B. Carriço and C. S. Ferreira and M. Ferreira and R. Moura and C. Ortigão and J. Pinheiro and P. Rodrigues and J. C. Silva and A. Trindade and J. Varela},
title={AVALANCHE PHOTODIODES FOR HIGH-RESOLUTION PET IMAGING SYSTEMS},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)},
year={2009},
pages={31-38},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001432900310038},
isbn={978-989-8111- 64-7},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2009)
TI - AVALANCHE PHOTODIODES FOR HIGH-RESOLUTION PET IMAGING SYSTEMS
SN - 978-989-8111- 64-7
AU - Bugalho R.
AU - Carriço B.
AU - S. Ferreira C.
AU - Ferreira M.
AU - Moura R.
AU - Ortigão C.
AU - Pinheiro J.
AU - Rodrigues P.
AU - C. Silva J.
AU - Trindade A.
AU - Varela J.
PY - 2009
SP - 31
EP - 38
DO - 10.5220/0001432900310038