Characterisation of Geiger-mode avalanche photodiodes for medical imaging applications
Metadata only
Date
2007-02-01Type
- Conference Paper
Abstract
Recently developed multipixel Geiger-mode avalanche photodiodes (G-APDs) are very promising candidates for the detection of light in medical imaging instruments (e.g. positron emission tomography) as well as in high-energy physics experiments and astrophysical applications. G-APDs are especially well suited for morpho-functional imaging (multimodality PET/CT, SPECT/CT, PET/MRI, SPECT/MRI).
G-APDs have many advantages compared to conventional photosensors such as photomultiplier tubes because of their compact size, low-power consumption, high quantum efficiency and insensitivity to magnetic fields. Compared to avalanche photodiodes and PIN diodes, they are advantageous because of their high gain, reduced sensitivity to pick up and the so-called nuclear counter effect and lower noise. We present measurements of the basic G-APD characteristics: photon detection efficiency, gain, inter-cell crosstalk, dynamic range, recovery time and dark count rate. Show more
Publication status
publishedExternal links
Book title
Proceedings of the 1st International Conference on Molecular Imaging Technology: EuroMedIm 2006Journal / series
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated EquipmentVolume
Pages / Article No.
Publisher
North-HollandEvent
Subject
Avalanche photodiode; G-APD; SiPM; PETOrganisational unit
03381 - Pauss, Felicitas (emeritus)
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