GATE Simulation Study of the Siemens Biograph mCT 20 Excel PET/CT System

• Autorzy: Saaidi Rahal , Toufique Yassine , Zeghari Abdelkrim , El kharrim Abderrahman , Cherkaoui El Moursli Rajaâ

Identyfikatory

DOI

10.2478/pjmpe-2019-0002

• Języki publikacji: EN

Abstrakty

EN

We used GATE simulation to study the effect of the coincidence time window (CTW) along with the block gap and the intercrystal gap on the count rate performance and the spatial resolution of the Biograph™ mCT 20 Excel. We ran simulations on our local cluster to reduce computation time. The task was split into several jobs that were then triggered simultaneously on the cluster nodes. The BiographTM mCT 20 Excel was validated using the NEMA NU 2-2012 protocol. Our results showed good agreement with experimental data. The simulated sensitivity, peak true count rate, peak noise equivalent count rate (NECR), and scatter fraction showed agreement within 3.62%, 5.77%, 0.6%, and 2.69%, respectively. In addition, the spatial resolution agreed within <0.51 mm. The results showed that a decrease in the coincidence time window and the block gap and an increase in the intercrystal gap increase the count rate performance and improve the spatial resolution. The results also showed that decreasing the coincidence time window increased the NECR by 27.37%. Changing the intercrystal gap from 0 to 0.2 mm and the block gap and from 4 to 0.4 mm increased the NECR by 5.53% and improved the spatial resolution at 1 cm by 2.91 % and that at 10 cm by 3.85%. The coincidence time window, crystal gap, and block gap are important parameters with respect to improving the spatial resolution.

Słowa kluczowe

EN

PET; NEMA; scatter fraction; sensitivity; NECR; spatial resolution

• Wydawca: Polskie Towarzystwo Fizyki Medycznej ; De Gruyter
• Czasopismo: Polish Journal of Medical Physics and Engineering
• Rocznik: 2019
• Tom: Vol. 25, Iss. 1
• Strony: 7--14
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Saaidi Rahal

• Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco

autor

Toufique Yassine

• Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco
• Texas AM University at Qatar, Education City, Doha, Qatar

autor

Zeghari Abdelkrim

• Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco

autor

El kharrim Abderrahman

• Abdelmalek Essaadi University, Tetouan, Morocco

autor

Cherkaoui El Moursli Rajaâ

• Faculty of Sciences, Mohammed V University, 4 Avenue Ibn Battouta B.P. 1014 RP, Rabat, Morocco

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).