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Table 2 Results from visual comparison study with regard to lesion detectability, image noise, and artifacts of n = 20 image pairs (20 images acquired with the standard protocol and 20 processed half-time images)

From: Reduced acquisition times in whole body bone scintigraphy using a noise-reducing Pixon®-algorithm—a qualitative evaluation study

  Processed half-time image preferred No preference Standard protocol image preferred
Observer A    
 Lesion detectability 2 (10 %) 9 (45 %) 9 (45 %)
 Image noise 0 (0 %) 3 (15 %) 17 (85 %)
 Artifacts 0 (0 %) 14 (70 %) 6 (30 %)
Observer B    
 Lesion detectability 0 (%) 20 (100 %) 0 (0 %)
 Image noise 0 (%) 11 (55 %) 9 (45 %)
 Artifacts 0 (%) 14 (70 %) 6 (30 %)
Observer C    
 Lesion detectability 5 (25 %) 5 (25 %) 10 (50 %)
 Image noise 3 (15 %) 4 (20 %) 13 (65 %)
 Artifacts 1 (5 %) 17 (85 %) 2 (10 %)
Combined    
 Lesion detectability 7 (12 %) 34 (57 %) 19 (32 %)
 Image noise 3 (5 %) 18 (30 %) 39 (65 %)
 Artifacts 1 (2 %) 45 (75 %) 14 (23 %)