학술논문
Synchronisation and calibration of the 24-modules J-PET prototype with 300~mm axial field of view
Document Type
Working Paper
Author
Moskal, P.; Bednarski, T.; Niedzwiecki, Sz.; Silarski, M.; Czerwinski, E.; Kozik, T.; Chhokar, J.; Bała, M.; Curceanu, C.; Del Grande, R.; Dadgar, M.; Dulski, K.; Gajos, A.; Gorgol, M.; Gupta-Sharma, N.; Hiesmayr, B. C.; Jasinska, B.; Kacprzak, K.; Kaplon, L.; Karimi, H.; Kisielewska, D.; Klimaszewski, K.; Korcyl, G.; Kowalski, P.; Krawczyk, N.; Krzemien, W.; Kubicz, E.; Mohammed, M.; Palka, M.; Pawlik-Niedzwiecka, M.; Raczynski, L.; Raj, J.; Sharma, S.; Shivani; Shopa, R. Y.; Skurzok, M.; Stepien, E.; Wislicki, W.; Zgardzinska, B.
Source
Subject
Language
Abstract
Research conducted in the framework of the J-PET project aims to develop a cost-effective total-body positron emission tomography scanner. As a first step on the way to construct a full-scale J-PET tomograph from long strips of plastic scintillators, a 24-strip prototype was built and tested. The prototype consists of detection modules arranged axially forming a cylindrical diagnostic chamber with the inner diameter of 360 mm and the axial field-of-view of 300 mm. Promising perspectives for a low-cost construction of a total-body PET scanner are opened due to an axial arrangement of strips of plastic scintillators, wchich have a small light attenuation, superior timing properties, and the possibility of cost-effective increase of the axial field-of-view. The presented prototype comprises dedicated solely digital front-end electronic circuits and a triggerless data acquisition system which required development of new calibration methods including time, thresholds and gain synchronization. The system and elaborated calibration methods including first results of the 24-module J-PET prototype are presented and discussed. The achieved coincidence resolving time equals to CRT = 490 $\pm$ 9 ps. This value can be translated to the position reconstruction accuracy $\sigma(\Delta l) =$ 18 mm which is fairly position-independent.
Comment: Accepted for publication in IEEE Transactions on Instrumentation and Measurement
Comment: Accepted for publication in IEEE Transactions on Instrumentation and Measurement