Performance measurements for the PET/CT Discovery-600 using NEMA NU 2-2007 standards

E. De Ponti; S. Morzenti; L. Guerra; C. Pasquali; M. Arosio; V. Bettinardi; A. Crespi; M. C. Gilardi; C. Messa

doi:10.1118/1.3544655

Performance measurements for the PET/CT Discovery-600 using NEMA NU 2-2007 standards

E. De Ponti, S. Morzenti, L. Guerra, C. Pasquali, M. Arosio, V. Bettinardi, A. Crespi, M. C. Gilardi, C. Messa

IRCCS Ospedale San Raffaele

Research output: Contribution to journal › Article › peer-review

Abstract

Purpose: The aim of this study was to assess the performance measurements of the new PET/CT system Discovery-600 (D-600, GEMS, Milwaukee, WI). Methods: Performance measures were obtained with the National Electrical Manufacturers Association (NEMA) NU 2-2007 procedures. Results: The transverse (axial) spatial resolution FWHMs were 4.9 (5.6) mm and 5.6 (6.4) mm at 1 and 10 cm off axis, respectively. The sensitivity (average at 0 and 10 cm) was 9.6 cps/kBq. The scatter fraction was 36.6% (low energy threshold: 425 keV). The NEC peak rate (k=1) was 75.2 kcps at 12.9 kBq/cc. The hot contrasts for 10, 13, 17, and 22 mm spheres were 41%, 51%, 62%, and 73% and the cold contrasts for 28 and 37 mm spheres were 68% and 72%. Conclusions: The Discovery-600 has good performance for the NEMA NU 2-2007 parameters, particularly in improved sensitivity compared to the scanners of the same Discovery family, D-ST and D-STE.

Original language	English
Pages (from-to)	968-974
Number of pages	7
Journal	Medical Physics
Volume	38
Issue number	2
DOIs	https://doi.org/10.1118/1.3544655
Publication status	Published - Feb 2011

Keywords

Discovery-600
NEMA NU 2-2007
PET/CT

ASJC Scopus subject areas

Biophysics
Radiology Nuclear Medicine and imaging

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title = "Performance measurements for the PET/CT Discovery-600 using NEMA NU 2-2007 standards",

abstract = "Purpose: The aim of this study was to assess the performance measurements of the new PET/CT system Discovery-600 (D-600, GEMS, Milwaukee, WI). Methods: Performance measures were obtained with the National Electrical Manufacturers Association (NEMA) NU 2-2007 procedures. Results: The transverse (axial) spatial resolution FWHMs were 4.9 (5.6) mm and 5.6 (6.4) mm at 1 and 10 cm off axis, respectively. The sensitivity (average at 0 and 10 cm) was 9.6 cps/kBq. The scatter fraction was 36.6% (low energy threshold: 425 keV). The NEC peak rate (k=1) was 75.2 kcps at 12.9 kBq/cc. The hot contrasts for 10, 13, 17, and 22 mm spheres were 41%, 51%, 62%, and 73% and the cold contrasts for 28 and 37 mm spheres were 68% and 72%. Conclusions: The Discovery-600 has good performance for the NEMA NU 2-2007 parameters, particularly in improved sensitivity compared to the scanners of the same Discovery family, D-ST and D-STE.",

keywords = "Discovery-600, NEMA NU 2-2007, PET/CT",

author = "{De Ponti}, E. and S. Morzenti and L. Guerra and C. Pasquali and M. Arosio and V. Bettinardi and A. Crespi and Gilardi, {M. C.} and C. Messa",

year = "2011",

month = feb,

doi = "10.1118/1.3544655",

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pages = "968--974",

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AU - De Ponti, E.

AU - Morzenti, S.

AU - Guerra, L.

AU - Pasquali, C.

AU - Arosio, M.

AU - Bettinardi, V.

AU - Crespi, A.

AU - Gilardi, M. C.

AU - Messa, C.

PY - 2011/2

Y1 - 2011/2

N2 - Purpose: The aim of this study was to assess the performance measurements of the new PET/CT system Discovery-600 (D-600, GEMS, Milwaukee, WI). Methods: Performance measures were obtained with the National Electrical Manufacturers Association (NEMA) NU 2-2007 procedures. Results: The transverse (axial) spatial resolution FWHMs were 4.9 (5.6) mm and 5.6 (6.4) mm at 1 and 10 cm off axis, respectively. The sensitivity (average at 0 and 10 cm) was 9.6 cps/kBq. The scatter fraction was 36.6% (low energy threshold: 425 keV). The NEC peak rate (k=1) was 75.2 kcps at 12.9 kBq/cc. The hot contrasts for 10, 13, 17, and 22 mm spheres were 41%, 51%, 62%, and 73% and the cold contrasts for 28 and 37 mm spheres were 68% and 72%. Conclusions: The Discovery-600 has good performance for the NEMA NU 2-2007 parameters, particularly in improved sensitivity compared to the scanners of the same Discovery family, D-ST and D-STE.

AB - Purpose: The aim of this study was to assess the performance measurements of the new PET/CT system Discovery-600 (D-600, GEMS, Milwaukee, WI). Methods: Performance measures were obtained with the National Electrical Manufacturers Association (NEMA) NU 2-2007 procedures. Results: The transverse (axial) spatial resolution FWHMs were 4.9 (5.6) mm and 5.6 (6.4) mm at 1 and 10 cm off axis, respectively. The sensitivity (average at 0 and 10 cm) was 9.6 cps/kBq. The scatter fraction was 36.6% (low energy threshold: 425 keV). The NEC peak rate (k=1) was 75.2 kcps at 12.9 kBq/cc. The hot contrasts for 10, 13, 17, and 22 mm spheres were 41%, 51%, 62%, and 73% and the cold contrasts for 28 and 37 mm spheres were 68% and 72%. Conclusions: The Discovery-600 has good performance for the NEMA NU 2-2007 parameters, particularly in improved sensitivity compared to the scanners of the same Discovery family, D-ST and D-STE.

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