Table 2.

Clinical image quality ranking from two readers of 25 whole-body scans based on different criteria, mean (1 SD)

Ranks	Image quality	Liver IQ	Bone marrow IQ	Background tissues except liver/marrow	Noise level	Lesion detectability	Diagnostic confidence
Full BSREM	2.6 (1.3)	2.6 (1.3)	2.6 (1.3)	2.6 (1.3)	2.6 (1.2)	2.3 (1.23)	2.4 (1.2)
Full OSEM	5.0 (1.2)	5.1 (1.0)	5.0 (1.2)	5.1 (1.0)	5.1 (1.0)	4.5 (1.19)	4.8 (1.1)
¾ OSEM	5.3 (0.99)	5.4 (0.86)	5.2 (1.3)	5.4 (0.85)	5.4 (0.85)	5.1 (0.99)	5.4 (0.86)
½ OSEM	6.8 (0.42)	6.8 (0.48)	6.7 (0.95)	6.8 (0.49)	6.8 (0.48)	6.8 (0.45)	6.9 (0.36)
Full DLE-standard	1.3 (0.87)	1.2 (0.68)	1.2 (0.68)	1.2 (0.68)	1.2 (0.68)	1.5 (0.91)	1.5 (0.91)
¾ DLE-standard	1.8 (0.83)	1.6 (0.72)	1.6 (0.73)	1.6 (0.73)	1.6 (0.72)	2.2 (1.21)	2.0 (0.82)
½ DLE-standard	3.4 (1.5)	2.9 (1.4)	2.6 (1.4)	2.9 (1.4)	3.0 (1.4)	4.1 (1.91)	3.8 (1.57)

1 is best and 7 is worst. Bold indicates the best (lowest) rank for each metric