tytuł:
|
A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals |
autor: |
Moskal Paweł , Zoń Natalia, Bednarski Tomasz , Białas Piotr , Czerwiński Eryk , Gajos Aleksander , Kisielewska Daria , Kapłon Łukasz , Kochanowski Andrzej , Korcyl Grzegorz , Kowal Jakub , Kowalski P., Kozik Tomasz , Krzemień Wojciech , Kubicz Ewelina , Niedźwiecki Szymon , Pałka Marek , Raczyński L., Rudy Zbigniew , Rundel Oleksandr , Salabura Piotr , Gupta-Sharma Neha , Silarski Michał , Słomski Artur , Smyrski Jerzy , Strzelecki Adam , Wieczorek Anna , Wiślicki W., Zieliński Marcin
|
tytuł czasopisma:
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Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment |
tom: |
775 |
data wydania
:
|
2015 |
strony:
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54-62 |
ISSN: |
0168-9002
|
eISSN: |
1872-9576
|
DOI: |
10.1016/j.nima.2014.12.005
|
uwagi:
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Autorki podpisane: Daria Kisielewska jako Daria Kamińska, Monika Pawlik-Niedźwiecka jako Monika Pawlik. |
język: |
angielski |
język czasopisma:
|
angielski |
abstrakt w j. angielskim: |
A novel method of hit time and hit position reconstruction in scintillator detectors is described. The method is based on comparison of detector signals with results stored in a library of synchronized model signals registered for a set of well-defined positions of scintillation points. The hit position is reconstructed as the one corresponding to the signal from the library which is most similar to the measurement signal. The time of the interaction is determined as a relative time between the measured signal and the most similar one in the library. A degree of similarity of measured and model signals is defined as the distance between points representing the measurement- and model-signal in the multi-dimensional measurement space. Novelty of the method lies also in the proposed way of synchronization of model signals enabling direct determination of the difference between time-of-flights (TOF) of annihilation quanta from the annihilation point to the detectors. The introduced method was validated using experimental data obtained by means of the double strip prototype of the J-PET detector and $^{22}$ Na sodium isotope as a source of annihilation gamma quanta. The detector was built out from plastic scintillator strips with dimensions of 5 mm×19 mm×300 mm, optically connected at both sides to photomultipliers, from which signals were sampled by means of the Serial Data Analyzer. Using the introduced method, the spatial and TOF resolution of about 1.3 cm ($\sigma$) and 125 ps ($\sigma$) were established, respectively. |
słowa kluczowe w j. angielskim: |
scintillator detectors, Positron Emission Tomography, time-of-flight, J-PET |
liczba arkuszy wydawniczych: |
0,5 |
wydział: instytut / zakład / katedra: |
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego, Wydział Chemii : Zakład Technologii Chemicznej, Wydział Fizyki, Astronomii i Informatyki Stosowanej : Zakład Technologii Gier |
typ: |
artykuł w czasopiśmie |
podtyp: |
artykuł |
punktacja MEiN [2015 A]: 25