Results 1 to 10 of about 423 (56)

A probabilistic deep learning model of inter-fraction anatomical variations in radiotherapy [PDF]

, 2022
In radiotherapy, the internal movement of organs between treatment sessions causes errors in the final radiation dose delivery. Motion models can be used to simulate motion patterns and assess anatomical robustness before delivery.
Habraken, Steven, Hoogeman, Mischa, Lathouwers, Danny, Nomura, Yusuke, Pastor-Serrano, Oscar, Perkó, Zoltán, Schaart, Dennis, Xing, Lei   +7 more
core   +3 more sources

A pilot study of the novel J-PET plastic scintillator with 2-(4-styrylphenyl)benzoxazole as a wavelength shifter [PDF]

, 2015
For the first time a molecule of 2-(4-styrylphenyl)benzoxazole containing benzoxazole and stilbene groups is applied as a scintillator dopant acting as a wavelength shifter. In this article a light yield of the plastic scintillator, prepared from styrene
Bednarski, T., Białas, P., Czerwiński, E., Danel, A., Gajos, A., Gruntowski, A., Kamińska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Molenda, M., Moskal, P., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Salabura, P., Sharma, N. G., Silarski, M., Smyrski, J., Strzelecki, A., Słomski, A., Uchacz, T., Wieczorek, A., Wiślicki, W., Zieliński, M., Zoń, N.   +32 more
core   +2 more sources

Processing optimization with parallel computing for the J-PET tomography scanner [PDF]

, 2015
The Jagiellonian-PET (J-PET) collaboration is developing a prototype TOF-PET detector based on long polymer scintillators. This novel approach exploits the excellent time properties of the plastic scintillators, which permit very precise time ...
Bała, M., Bednarski, T., Białas, P., Czerwiński, E., Gajos, A., Gorgol, M., Jasińska, B., Kamińska, D., Kapłon, Ł., Korcyl, G., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Moskal, P., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Sharma, N. G., Silarski, M., Stola, K., Strzelecki, A., Słomski, A., Trybek, D., Wieczorek, Anna, Wiślicki, W., Zgardzińska, B. K., Zieliński, M.   +29 more
core   +2 more sources

Analysis framework for the J-PET scanner [PDF]

, 2015
J-PET analysis framework is a flexible, lightweight, ROOT-based software package which provides the tools to develop reconstruction and calibration procedures for PET tomography.
Bednarski, T., Białas, P., Czerwiński, E., Gajos, A., Gruntowski, A., Kamińska, D., Kapłon, L., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Moskal, P., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Smyrski, J., Stola, K., Strzelecki, A., Słomski, A., Trybek, D., Wieczorek, A., Wiślicki, W., Zieliński, M., Zoń, N.   +30 more
core   +2 more sources

J-PET: a new technology for the whole-body PET imaging [PDF]

, 2017
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 layers forming a cylindrical diagnostic chamber with the inner diameter of
Białas, P., Curceanu, C., Czerwiński, E., Dulski, K., Gajos, A., Gorgol, M., Głowacz, B., Hiesmayr, B. C., Jasińska, B., Kapłon, Ł., Kisielewska-Kamińska, D., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemień, W., Kubicz, E., Mohammed, M., Moskal, P., Niedźwiecki, S., Pawlik-Niedźwiecka, M., Pałka, M., Raczyński, L., Rudy, Z., Sharma, N. G., Sharma, S., Shopa, R. Y., Silarski, M., Skurzok, M., Wieczorek, A., Wiślicki, W., Zgardzińska, B., Zieliński, M.   +32 more
core   +2 more sources

Application of the Compress Sensing Theory for Improvement of the TOF Resolution in a Novel J-PET Instrument [PDF]

, 2015
Nowadays, in Positron Emission Tomography (PET) systems, a Time of Flight information is used to improve the image reconstruction process. In Time of Flight PET (TOF-PET), fast detectors are able to measure the difference in the arrival time of the two ...
Bednarski, T., Bialas, P., Czerwinski, E., Gajos, A., Kaplon, L., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemien, W., Kubicz, E., Moskal, P., Niedzwiecki, Sz., Palka, M., Raczynski, L., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Slomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Wislicki, W., Zielinski, M., Zon, N.   +26 more
core   +2 more sources

Three-dimensional image reconstruction in J-PET using Filtered Back Projection method [PDF]

, 2017
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 the 511 keV photons with a cylindrical detector were generated.
Białas, P., Curceanu, C., Czerwiński, E., Dulski, K., Gajos, A., Gorgol, M., Głowacz, B., Hiesmayr, B., Jasińska, B., Kisielewska-Kamińska, D., Klimaszewski, K., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemień, W., Kubicz, E., Mohammed, M., Moskal, P., Niedźwiecki, S., Pawlik-Niedźwiecka, M., Pałka, M., Raczyński, L., Rudy, Z., Sharma, N. G., Sharma, S., Shopa, R. Y., Silarski, M., Skurzok, M., Wieczorek, A., Wiślicki, W., Zgardzińska, B., Zieliński, M.   +32 more
core   +2 more sources

Developing a phantom for the positronium imaging evaluation [PDF]

, 2022
In this contribution, a concept for a new phantom for positronium imaging with PET scanners is described. The proposed phantom is based on the NEMA IEC phantom in which six high-activity spheres are filled with solutions characterized by a different mean
Moskal, Paweł, Niedźwiecki, Szymon, Łapkiewicz, Gabriela   +2 more
core   +2 more sources

Commissioning of the J-PET detector for studies of decays of positronium atoms [PDF]

, 2017
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-positron annihilation into photons.
Białas, P., Curceanu, C., Czerwiński, E., Dulski, K., Gajos, A., Gorgol, M., Głowacz, B., Hiesmayr, B. C., Jasińska, B., Kisielewska, D., Korcyl, G., Kowalski, P., Kozik, T., Krawczyk, N., Krzemień, W., Kubicz, E., Mohammed, M., Moskal, P., Niedźwiecki, Sz., Pawlik-Niedźwiecka, M., Pałka, M., Raczyński, L., Rudy, Z., Sharma, N. G., Sharma, S., Shopa, R. Y., Silarski, M., Skurzok, M., Wieczorek, A., Wiślicki, W., Zgardzińska, B., Zieliński, M.   +31 more
core   +2 more sources

Hit time and hit position reconstruction in the J-PET detector based on a library of averaged model signals [PDF]

, 2015
In this article we present a novel method of hit time and hit position reconstruction in long scintillator detectors. We take advantage of the fact that for this kind of detectors amplitude and shape of registered signals depends strongly on the position
Bednarski, T., Białas, P., Bułka, J., Czerwiński, E., Gajos, A., Kamińska, D., Kapłon, L., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Moskal, P., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Salabura, P., Sharma, N. G., Silarski, M., Smyrski, J., Strzelecki, A., Słomski, A., Wieczorek, A., Wiślicki, W., Wochlik, I., Zieliński, M., Zoń, N.   +30 more
core   +2 more sources