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Optimized light sharing for high-resolution TOF PET detector based on digital silicon photomultipliers

(2014) PHYSICS IN MEDICINE AND BIOLOGY. 59(23). p.7125-7139
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Abstract
The majority of current whole-body PET scanners are based on pixelated scintillator arrays with a transverse pixel size of 4 mm. However, recent studies have shown that decreasing the pixel size to 2 mm can significantly improve image spatial resolution. In this study, the performance of Digital Photon Counter (DPC) from Philips Digital Photon Counting (PDPC) was evaluated to determine their potential for high-resolution whole-body time of flight (TOF) PET scanners. Two detector configurations were evaluated. First, the DPC3200-44-22 DPC array was coupled to a LYSO block of 15  ×  15 2  ×  2 × 22 mm3 pixels through a 1 mm thick light guide. Due to light sharing among the dies neighbour logic of the DPC was used. In a second setup the same DPC was coupled directly to a scalable 4  ×  4 LYSO matrix of 1.9  ×  1.9  ×  22 mm3 crystals with a dedicated reflector arrangement allowing for controlled light sharing patterns inside the matrix. With the first approach an average energy resolution of 14.5% and an average CRT of 376 ps were achieved. For the second configuration an average energy resolution of 11% and an average CRT of 295 ps were achieved. Our studies show that the DPC is a suitable photosensor for a high-resolution TOF-PET detector. The dedicated reflector arrangement allows one to achieve better performances than the light guide approach. The count loss, caused by dark counts, is overcome by fitting the matrix size to the size of DPC single die.
Keywords
POSITRON-EMISSION-TOMOGRAPHY, TIME-OF-FLIGHT, TIMING RESOLUTION, PERFORMANCE, SCANNER, SCINTILLATOR, DESIGN, digital silicon photomultiplier array, dSiPM, PET, high resolution, TOF, time of flight, LYSO

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Citation

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MLA
Marcinkowski, Radoslaw, Samuel Espana Palomares, Roel Van Holen, et al. “Optimized Light Sharing for High-resolution TOF PET Detector Based on Digital Silicon Photomultipliers.” PHYSICS IN MEDICINE AND BIOLOGY 59.23 (2014): 7125–7139. Print.
APA
Marcinkowski, R., Espana Palomares, S., Van Holen, R., & Vandenberghe, S. (2014). Optimized light sharing for high-resolution TOF PET detector based on digital silicon photomultipliers. PHYSICS IN MEDICINE AND BIOLOGY, 59(23), 7125–7139.
Chicago author-date
Marcinkowski, Radoslaw, Samuel Espana Palomares, Roel Van Holen, and Stefaan Vandenberghe. 2014. “Optimized Light Sharing for High-resolution TOF PET Detector Based on Digital Silicon Photomultipliers.” Physics in Medicine and Biology 59 (23): 7125–7139.
Chicago author-date (all authors)
Marcinkowski, Radoslaw, Samuel Espana Palomares, Roel Van Holen, and Stefaan Vandenberghe. 2014. “Optimized Light Sharing for High-resolution TOF PET Detector Based on Digital Silicon Photomultipliers.” Physics in Medicine and Biology 59 (23): 7125–7139.
Vancouver
1.
Marcinkowski R, Espana Palomares S, Van Holen R, Vandenberghe S. Optimized light sharing for high-resolution TOF PET detector based on digital silicon photomultipliers. PHYSICS IN MEDICINE AND BIOLOGY. 2014;59(23):7125–39.
IEEE
[1]
R. Marcinkowski, S. Espana Palomares, R. Van Holen, and S. Vandenberghe, “Optimized light sharing for high-resolution TOF PET detector based on digital silicon photomultipliers,” PHYSICS IN MEDICINE AND BIOLOGY, vol. 59, no. 23, pp. 7125–7139, 2014.
@article{5751785,
  abstract     = {The majority of current whole-body PET scanners are based on pixelated scintillator arrays with a transverse pixel size of 4 mm. However, recent studies have shown that decreasing the pixel size to 2 mm can significantly improve image spatial resolution. In this study, the performance of Digital Photon Counter (DPC) from Philips Digital Photon Counting (PDPC) was evaluated to determine their potential for high-resolution whole-body time of flight (TOF) PET scanners. Two detector configurations were evaluated. First, the DPC3200-44-22 DPC array was coupled to a LYSO block of 15  ×  15 2  ×  2 × 22 mm3 pixels through a 1 mm thick light guide. Due to light sharing among the dies neighbour logic of the DPC was used. In a second setup the same DPC was coupled directly to a scalable 4  ×  4 LYSO matrix of 1.9  ×  1.9  ×  22 mm3 crystals with a dedicated reflector arrangement allowing for controlled light sharing patterns inside the matrix. With the first approach an average energy resolution of 14.5% and an average CRT of 376 ps were achieved. For the second configuration an average energy resolution of 11% and an average CRT of 295 ps were achieved. Our studies show that the DPC is a suitable photosensor for a high-resolution TOF-PET detector. The dedicated reflector arrangement allows one to achieve better performances than the light guide approach. The count loss, caused by dark counts, is overcome by fitting the matrix size to the size of DPC single die.},
  author       = {Marcinkowski, Radoslaw and Espana Palomares, Samuel and Van Holen, Roel and Vandenberghe, Stefaan},
  issn         = {0031-9155},
  journal      = {PHYSICS IN MEDICINE AND BIOLOGY},
  keywords     = {POSITRON-EMISSION-TOMOGRAPHY,TIME-OF-FLIGHT,TIMING RESOLUTION,PERFORMANCE,SCANNER,SCINTILLATOR,DESIGN,digital silicon photomultiplier array,dSiPM,PET,high resolution,TOF,time of flight,LYSO},
  language     = {eng},
  number       = {23},
  pages        = {7125--7139},
  title        = {Optimized light sharing for high-resolution TOF PET detector based on digital silicon photomultipliers},
  url          = {http://dx.doi.org/10.1088/0031-9155/59/23/7125},
  volume       = {59},
  year         = {2014},
}

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