Advanced search
1 file | 408.25 KB Add to list

Performance characterization of a compact SPECT detector based on dSiPMs and monolithic LYSO

Author
Organization
Abstract
Silicon photomultipliers (SiPM) are a promising alternative light sensor for the classic photomultiplier tubes currently used as single photon emission computed tomography (SPECT) detectors due to their compact dimensions and smaller pixelization. Furthermore, these SiPMs are also known to be MR-hard which brings on new possibilities for simultaneous SPECT-MR imaging. In contrast to other research on SiPMs which is mainly focussed on PET applications, we will focus on SPECT imaging. The detector used in this work, consists of a dSiPM (DPC-3200-22-44, Philips Digital Photon Counting) optically coupled to a monolithic LYSO scintillator of 2 mm thick. Using a collimated Co-57 source, a filter was developed to remove the dark count events from the spectrum and a comparison was made between the detection efficiency of the DPC-based detector and a PSPMT-based detector. Furthermore, the intrinsic spatial resolution was determined using both a resolution collimator and beam source measurements. The same beam source measurements were also used to calculate the energy resolution across the detector. Finally, the count rate performance of the DPC was investigated by measuring a decaying Tc-99m source in front of the detector. Measurements showed that, despite the presence of dark count events in the spectrum, the DPCs have approximately the same detection efficiency as our gold standard, the PSPMT. Furthermore, we demonstrate that the detector has an intrinsic spatial resolution of 0.486 mm and an energy resolution of 22.3 %. This work demonstrates the usefulness of the DPCs as SPECT detectors.
Keywords
RESOLUTION, PHOTOMULTIPLIER

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 408.25 KB

Citation

Please use this url to cite or link to this publication:

MLA
Bouckaert, Carmen, Karel Deprez, Samuel Espana Palomares, et al. “Performance Characterization of a Compact SPECT Detector Based on dSiPMs and Monolithic LYSO.” 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). New York, NY, USA: IEEE, 2013. Print.
APA
Bouckaert, C., Deprez, K., Espana Palomares, S., Vandenberghe, S., & Van Holen, R. (2013). Performance characterization of a compact SPECT detector based on dSiPMs and monolithic LYSO. 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). Presented at the 60th IEEE Nuclear Science Symposium (NSS) / Medical Imaging Conference (MIC) / 20th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, New York, NY, USA: IEEE.
Chicago author-date
Bouckaert, Carmen, Karel Deprez, Samuel Espana Palomares, Stefaan Vandenberghe, and Roel Van Holen. 2013. “Performance Characterization of a Compact SPECT Detector Based on dSiPMs and Monolithic LYSO.” In 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). New York, NY, USA: IEEE.
Chicago author-date (all authors)
Bouckaert, Carmen, Karel Deprez, Samuel Espana Palomares, Stefaan Vandenberghe, and Roel Van Holen. 2013. “Performance Characterization of a Compact SPECT Detector Based on dSiPMs and Monolithic LYSO.” In 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). New York, NY, USA: IEEE.
Vancouver
1.
Bouckaert C, Deprez K, Espana Palomares S, Vandenberghe S, Van Holen R. Performance characterization of a compact SPECT detector based on dSiPMs and monolithic LYSO. 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC). New York, NY, USA: IEEE; 2013.
IEEE
[1]
C. Bouckaert, K. Deprez, S. Espana Palomares, S. Vandenberghe, and R. Van Holen, “Performance characterization of a compact SPECT detector based on dSiPMs and monolithic LYSO,” in 2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC), Seoul, South Korea, 2013.
@inproceedings{4388506,
  abstract     = {Silicon photomultipliers (SiPM) are a promising alternative light sensor for the classic photomultiplier tubes currently used as single photon emission computed tomography (SPECT) detectors due to their compact dimensions and smaller pixelization. Furthermore, these SiPMs are also known to be MR-hard which brings on new possibilities for simultaneous SPECT-MR imaging. In contrast to other research on SiPMs which is mainly focussed on PET applications, we will focus on SPECT imaging.
 
The detector used in this work, consists of a dSiPM (DPC-3200-22-44, Philips Digital Photon Counting) optically coupled to a monolithic LYSO scintillator of 2 mm thick. Using a collimated Co-57 source, a filter was developed to remove the dark count events from the spectrum and a comparison was made between the detection efficiency of the DPC-based detector and a PSPMT-based detector. Furthermore, the intrinsic spatial resolution was determined using both a resolution collimator and beam source measurements. The same beam source measurements were also used to calculate the energy resolution across the detector. Finally, the count rate performance of the DPC was investigated by measuring a decaying Tc-99m source in front of the detector.
 
Measurements showed that, despite the presence of dark count events in the spectrum, the DPCs have approximately the same detection efficiency as our gold standard, the PSPMT. Furthermore, we demonstrate that the detector has an intrinsic spatial resolution of 0.486 mm and an energy resolution of 22.3 %. This work demonstrates the usefulness of the DPCs as SPECT detectors.},
  articleno    = {M14-7},
  author       = {Bouckaert, Carmen and Deprez, Karel and Espana Palomares, Samuel and Vandenberghe, Stefaan and Van Holen, Roel},
  booktitle    = {2013 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC)},
  isbn         = {9781479934232},
  keywords     = {RESOLUTION,PHOTOMULTIPLIER},
  language     = {eng},
  location     = {Seoul, South Korea},
  pages        = {5},
  publisher    = {IEEE},
  title        = {Performance characterization of a compact SPECT detector based on dSiPMs and monolithic LYSO},
  year         = {2013},
}

Web of Science
Times cited: