219 citations · 2.2k across the 62 of their papers we have counts for
9 papers · 1 filter
Human Tissues Investigation Using PALS Technique
B. Jasińska, B. Zgardzińska, G. Chołubek +34
Samples of uterine leiomyomatis and normal tissues taken from patients after surgery were investigated using the Positron Annihilation Lifetime Spectroscopy (PALS). Significant dif…
Commissioning of the J-PET detector for studies of decays of positronium atoms
E. Czerwiński, K. Dulski, P. Białas +29
The Jagiellonian Positron Emission Tomograph (J-PET) is a detector for medical imaging of the whole human body as well as for physics studies involving detection of electron-positr…
Introduction of total variation regularization into filtered backprojection algorithm
L. Raczyński, W. Wiślicki, K. Klimaszewski +30
In this paper we extend the state-of-the-art filtered backprojection (FBP) method with application of the concept of Total Variation regularization. We compare the performance of t…
J-PET: a new technology for the whole-body PET imaging
S. Niedźwiecki, P. Białas, C. Curceanu +30
The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET built from plastic scintillators. J-PET prototype consists of 192 detection modules arranged axially in three…
Three-dimensional image reconstruction in J-PET using Filtered Back Projection method
R. Y. Shopa, K. Klimaszewski, P. Kowalski +30
We present a method and preliminary results of the image reconstruction in the Jagiellonian PET tomograph. Using GATE (Geant4 Application for Tomographic Emission), interactions of…
Analysis procedure of the positronium lifetime spectra for the J-PET detector
K. Dulski, B. Zgardzinska, P. Bialas +30
Positron Annihilation Lifetime Spectroscopy (PALS) has shown to be a powerful tool to study the nanostructures of porous materials. Positron Emissions Tomography (PET) are devices…
Time calibration of the J-PET detector
M. Skurzok, M. Silarski, D. Alfs +32
The Jagiellonian Positron Emission Tomograph (J-PET) project carried out in the Institute of Physics of the Jagiellonian University is focused on construction and tests of the firs…
Multichannel FPGA based MVT system for high precision time (20~ps~RMS) and charge measurement
M. Pałka, P. Strzempek, G. Korcyl +29
In this article it is presented an FPGA based ulti-oltage hreshold (MVT) system which allows of sampling fast signals ( ns rising and falling edge) in both voltage an…
Calculation of time resolution of the J-PET tomograph using the Kernel Density Estimation
L. Raczyński, W. Wiślicki, W. Krzemień +31
In this paper we estimate the time resolution of the J-PET scanner built from plastic scintillators. We incorporate the method of signal processing using the Tikhonov regularizatio…