학술논문
Synchronization and Calibration of the 24-Modules J-PET Prototype With 300-mm Axial Field of View
Document Type
Periodical
Author
Moskal, P.; Bednarski, T.; Niedzwiecki, S.; Silarski, M.; Czerwinski, E.; Kozik, T.; Chhokar, J.; Bala, M.; Curceanu, C.; Grande, R.D.; 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
IEEE Transactions on Instrumentation and Measurement IEEE Trans. Instrum. Meas. Instrumentation and Measurement, IEEE Transactions on. 70:1-10 2021
Subject
Language
ISSN
0018-9456
1557-9662
1557-9662
Abstract
Research conducted in the framework of the Jagiellonian-PET (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, which 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 the 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 ${\mathrm {CRT}}=490\pm 9$ ps. This value can be translated to the position reconstruction accuracy $\sigma (\Delta l) =18$ mm, which is fairly position independent.