Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material

Balázs Játékos, Zoltán Kolozsi, E. Lörincz, Ferenc Ujhelyi, Attila Barócsi, Gábor Erdei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

In the field of biomedical imaging there is a strong interest in combining modalities of positron emission tomography (PET) and magnetic resonance imaging (MRI). An MRI-compatible PET detector module has to be insensitive to the magnetic field that is why it needs to incorporate avalanche photodiodes (APD) or silicon photomultipliers (SiPM). We propose a new purely optical characterization method for these devices where no nuclear source is needed. In our method we use LED sources for both the direct illumination of silicon sensors and fluorescent excitation of the scintillator material. With this method we can measure the response characteristic and uniformity of pixels in sensor arrays as well as the optical cross-talk between neighboring pixels. In the same experimental setup we can also emulate the pulse response of the detector module (i.e. light-spread over the sensor array from a point source in the scintillator material). We present the detailed construction of the experimental setup and analyze the benefits and drawbacks of this method compared to the nuclear measurements. The viability of the idea is proven through the characterization of a SiPM array and a block detector module based on it.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8439
DOIs
Publication statusPublished - 2012
EventOptical Sensing and Detection II - Brussels, Belgium
Duration: Apr 16 2012Apr 19 2012

Other

OtherOptical Sensing and Detection II
CountryBelgium
CityBrussels
Period4/16/124/19/12

Fingerprint

Positron Emission Tomography
Scintillator
Positron emission tomography
Photoexcitation
Magnetic Resonance Imaging
Magnetic resonance
Phosphors
scintillation counters
magnetic resonance
positrons
tomography
Excitation
modules
Photomultipliers
Detector
Sensor arrays
Silicon
Detectors
Imaging techniques
Module

Keywords

  • LED
  • PET detector module
  • Scintillator
  • SiPM
  • UV excitation

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Játékos, B., Kolozsi, Z., Lörincz, E., Ujhelyi, F., Barócsi, A., & Erdei, G. (2012). Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8439). [84391R] https://doi.org/10.1117/12.922618

Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material. / Játékos, Balázs; Kolozsi, Zoltán; Lörincz, E.; Ujhelyi, Ferenc; Barócsi, Attila; Erdei, Gábor.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8439 2012. 84391R.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Játékos, B, Kolozsi, Z, Lörincz, E, Ujhelyi, F, Barócsi, A & Erdei, G 2012, Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8439, 84391R, Optical Sensing and Detection II, Brussels, Belgium, 4/16/12. https://doi.org/10.1117/12.922618
Játékos B, Kolozsi Z, Lörincz E, Ujhelyi F, Barócsi A, Erdei G. Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8439. 2012. 84391R https://doi.org/10.1117/12.922618
Játékos, Balázs ; Kolozsi, Zoltán ; Lörincz, E. ; Ujhelyi, Ferenc ; Barócsi, Attila ; Erdei, Gábor. / Characterization of MRI-compatible PET detector modules by optical excitation of the scintillator material. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8439 2012.
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