Table 2.

Washout rates determined from SPECT and planar images using CNN-based and standard methods, respectively

	Planar WRBC		Total
	< 34%	≥ 34%
(A)
SPECT WRCNN
≤ 30%	23 (48.9%)	1 (2.1%)	24 (51.1%)
> 30%	5 (10.6%)	18 (38.3%)	23 (48.9%)
Total	28 (59.6%)	19 (40.4%)	47

	Planar WRNC		Total
	< 30.1%	≥ 30.1%
(B)
SPECT WRCNN
≤ 30%	18 (38.3%)	1 (2.1%)	19 (40.4%)
> 30%	9 (19.2%)	19 (40.4%)	28 (59.6%)
Total	27 (57.5%)	20 (42.5%)	47

	Planar WRHMR		Total
	< 14.2%	≥ 14.2%
(C)
SPECT WRCNN
≤ 30%	18 (38.3%)	1 (2.1%)	19 (40.4%)
> 30%	12 (25.5%)	16 (34.0%)	28 (59.6%)
Total	30 (63.8%)	17 (36.2%)	47

Planar WR_BC, planar washout rate with background correction; Planar WR_HMR, planar washout rate heart-to-mediastinum ratio; Planar WR_NC, planar washout rate without background correction; SPECT WR_CNN, SPECT washout rate using CNN.