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Wyszukujesz frazę "energy detection" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Utilization of an energy-resolving detection system for mammography applications : a preliminary study
Autorzy:
Taha, Eslam M.
Elmoujarkach, Ezzat A.
Balamesh, Ahmed
Alzaidi, Samir A.
Alhawsawi, Abdulsalam M.
Powiązania:
https://bibliotekanauki.pl/articles/2171786.pdf
Data publikacji:
2022
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
energy-resolving detection systems
gamma-ray imaging
GATE simulation toolkit
mammography
Opis:
Breast cancer remains one of the major causes of mortality among female cancer patients. This fact caused a spark in the medical field, which in turn helped to improve the diagnostic and treatment of breast cancer patients over the years making this field always active with new ideas and innovative methods. In our study, a new method was explored using an energy-resolving detection system made from a NaI (Tl) scintillation detector to detect the gamma photons from an Am-241 radiation source to try and construct an image by scanning the American College of Radiology (ACR) mammography phantom. In addition to the experimental work, a Geant4 Application for Tomographic Emission (GATE) toolkit was used to investigate more complex options to improve the image quality of mammographic systems, which is limited by the experimental setup. From the experimental setup, the researchers were able to construct an image using the 26.3 keV and the 59.5 keV energy photons, to show the largest size tumour (12 mm) in the ACR phantom. With an improved setup in the simulation environment, the majority of the ACR phantom tumours was visible using both energy windows from the 26.3 keV and the 59.5 keV, where the 26.3 keV yielded better quality images showing four tumours compared to three when using 59.5 keV. The simulation results were promising; however, several improvements need to be incorporated into the experimental work so that the system can generate high-resolution mammographic images similar to the ones obtained by the GATE simulation setup.
Źródło:
Nukleonika; 2022, 67, 2; 35--40
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of some modern scintillators recommended for use on large fusion facilities in γ-ray spectroscopy and tomographic measurements of γ-emission profiles
Autorzy:
Sibczynski, P.
Broslawski, A.
Gojska, A.
Kiptily, V.
Korolczuk, S.
Kwiatkowski, R.
Mianowski, S.
Moszyński, M.
Rzadkiewicz, J.
Swiderski, L.
Szydlowski, A.
Zychor, I.
Powiązania:
https://bibliotekanauki.pl/articles/146137.pdf
Data publikacji:
2017
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
gamma spectrometry
scintillators
decay time
non-proportionality
energy resolution
detection efficiency
fusion plasma
Opis:
LaBr3:Ce,CeBr3 and GAGG:Ce scintillators were investigated and the determined characteristics were compared with those obtained for the well-known and widely used CsI:Tl and NaI:Tl crystals. All the detectors were of the same size of 10 × 10 × 5 mm3. The aim of this test study was to single out scintillation detectors most suitable for γ-ray spectrometry and γ -ray emission radial profile measurements in high-temperature plasma experiments. Decay time, energy resolution, non-proportionality and full energy peak detection efficiency were measured for γ -ray energies up to 1770 keV. Due to their good energy resolution, short decay time and high detection efficiency for MeV gamma rays, LaBr3:Ce and CeBr3 scintillators are proposed as the best candidates for use especially under conditions of high count rates, which are expected in the forthcoming DT experiments.
Źródło:
Nukleonika; 2017, 62, 3; 223-228
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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