Table 3. Reading time for 2D and 2D+3D mammography by three radiologists and the average screen-reading time (data are shown both per screen read and for total screens).

	Radiologist
Time based on (by modality and whether individual or total screens)	A	B	C	Average reading time
Results for time per individual screen-read (per test)
2D mammography	25 s	27 s	46 s	33 s
2D+3D mammography	80 s	60 s	90 s	77 s
Absolute difference	54 s	33 s	44 s	44 s
Difference (2D+3D vs 2D)	+220%	+122%	+96%	+133%
Results for time per total screens in test set (100 screens)
2D mammography	41 min 28 s	45 min 32 s	76 min 10 s	54 min 23 s
2D+3D mammography	133 min 6 s	100 min 11 s	150 min 16 s	127 min 51 s
Absolute difference	91 min 38 s	54 min 39 s	74 min 6 s	73 min 28 s
Difference (2D+3D vs 2D)	+220%	+120%	+97%	+135%

2D, two-dimensional; 3D, three-dimensional.