Assessment of a new scintillation crystal (LaBr3) in PET scanners using Monte Carlo method

• Autorzy: Karimian A. E. , Thompson Ch. J.
• Języki publikacji: EN

Abstrakty

EN

The main aim of this work is to investigate the use of new lanthanum bromide (LaBr3) in whole body PET (WB-PET) scanners and to compare the obtained results with those for BGO and LSO crystals which are currently used in conventional and dedicated PET systems. Our results show that there is a gain in noise effective count rate (NECR) arising from the reduced scatter and random fractions in a LaBr3 scanner. The spatial resolution of the WB-PET with LaBr3 is slightly worse than the LSO and BGO crystals because of its low density and effective atomic number. But our study showed the increased NECR, excellent energy resolution and low decay time of LaBr3 which promise a significant improvement in WB-PET performances especially for narrow coincidence windows.

Słowa kluczowe

EN

PET; scintillation crystals; Monte Carlo; lanthanum bromide

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2008
• Tom: Vol. 53, No. 1
• Strony: 5--6
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Karimian A. E.

autor

Thompson Ch. J.

• Biomedical Engineering Group, Engineering Faculty, University of Isfahan, Isfahan, Postal code: 81744, Iran, Tel.: [phone], Fax: [phone],

Bibliografia

• 1. Braem A, Chamizo Llatas M, Chesi E et al. (2004)Feasibility of a novel design of high resolution parallaxfree Compton enhanced PET scanner dedicated to brain research. Phys Med Biol 49:1–16
• 2. DeGrado TR, Turkington TG, Williams JJ, Stearns CW, Hoffman JM, Coleman RE (1994) Performance characteristics of a whole-body PET scanner. J Nucl Med 35:1398–1405
• 3. Humm JL, Rosenfeld A, Del Guerra A (2003) From PET detectors to PET scanners. Eur J Nucl Med 30:1574–1597
• 4. Karimian A, Thompson CJ (2006) Assessment of using new scintillation crystal (LaBr3) in PET system by Monte Carlo method. In: World Congress on Medical Physics and Biomedical Engineering, August 27 – September 1,2006, Seoul, Korea, pp 1584–1586
• 5. Karimian A, Thompson CJ, Sarkar S et al. (2004) A dedicated PET system for breast imaging (CYBPET), M2-1.IEEE NSS MIC, Rome, Italy (CD edition)
• 6. Karimian A, Thompson CJ, Sarkar S et al. (2005) CYBPET:A cylindrical PET system for breast imaging. Nucl Instrum Methods Phys Res A 545:427–435
• 7. NEMA (2001) Performance measurements of positron emission tomographs. NEMA Standards Publication NU 2 – 1994 & 2000. National Electrical Manufacturers Association, Rosslyn
• 8. Rozsa CM, Mayhugh MR, Menge PR, Rothan D, Dathg C (2006) Brilliance scintillators LaCl3(Ce) and LaBr3(Ce):recent advances and results, Saint-Gobain Crystals. IEEE MIC, San Diego, CA, USA
• 9. Saint-Gobain Crystals, Saint-Gobain Ceramics & Plastics, Inc. (2004) BrilLanCeTM380 [LaBr3(Ce)] data sheet, http://www.detectors.saint-gobain.com/
• 10. Surti S, Karp JS, Muehllehner G, Raby PS (2003) Investigation of lanthanum scintillator for 3-D PET. IEEE Trans Nucl Sci 50:348–354
• 11. Thompson CJ, Moreno-Cantu J, Picard Y (1992) PETSIM: Monte Carlo simulation of all sensitivity and resolution parameters of cylindrical positron imaging systems. Phys Med Biol 37:731–749
• 12.Thompson CJ, Picard Y (2003) PETSIM Monte Carlo simulation programs guide to writing batch processing command files. Revision 2003