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. 2012 Aug 27;2:45. doi: 10.1186/2191-219X-2-45

Table 4 .

Mean quantification error for 60% to 90% ROI diameter of the calibration phantom physical diameter

SPECT-CT systems Quantification error (%)
               
Contrast
    NEMA
    S
   
XL L M XL L M XL L M
Brightview
−9.29
−4.34
−8.08
−6.32
−4.05
−6.32
−12.08
−14.15
−10.91
Discovery
0.72
7.48
12.27
−5.12
1.25
5.76
−16.15
−10.52
−6.54
Infinia
4.11
−13.95
−7.64
1.17
−16.38
−10.25
−5.66
−22.02
−16.31
Symbia 0.82 9.22 5.62 −3.83 4.18 0.76 −16.45 −9.49 −12.47

Results are presented for the four SPECT-CT systems, the three calibration phantoms (XL, L, and M), and the three test phantoms (Contrast, NEMA, and S).