EJNMMI Research

Table 4 Mean quantification error for 60% to 90% ROI diameter of the calibration phantom physical diameter

From: Quantitative capabilities of four state-of-the-art SPECT-CT cameras

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).

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