Table 2.

Pearson correlations of the validation cohort

Image reconstruction	keV	QIR	Coronary CT angiography		Late enhancement scan
			Pearson R2	p-value	Pearson R2	p-value
VNI	60	2	0.16	< 0.001	0.57	< 0.001
		3	0.15	< 0.001	0.57	< 0.001
		4	0.16	< 0.001	0.58	< 0.001
	70	2	0.16	< 0.001	0.57	< 0.001
		3	0.16	< 0.001	0.58	< 0.001
		4	0.16	< 0.001	0.58	< 0.001
	80	2	0.12	0.003	0.57	< 0.001
		3	0.16	< 0.001	0.57	< 0.001
		4	0.16	< 0.001	0.56	< 0.001
VNC		2	0.16	< 0.001	0.58	< 0.001
		3	0.16	< 0.001	0.58	< 0.001
		4	0.15	< 0.001	0.58	< 0.001

VNC virtual non-contrast, VNI virtual non-iodine, QIR quantum iterative reconstruction