Table 3.

Measurement of 80-keV CT value, mixed-keV CT value, Rho, and Z_eff for DECT

	Ruptured ACLs	Intact ACLs	p value
80-keV CT value, HU
Overall#, *	37.9 (10.5–48.0)	77.9 ± 7.7	< 0.001
Reader 1#, *	41.4 (16.2–49.4)	77.5 ± 9.1	< 0.001
Reader 2#, *	35.1 (5.6–46.6)	78.3 ± 7.3	< 0.001
Optimal cut-off value	61.8
Mixed-keV CT value, HU
Overall#, *	31.3 (− 1.0–47.2)	81.4 ± 7.2	< 0.001
Reader 1#, *	34.5 (3.9–48.4)	80.9 ± 8.4	< 0.001
Reader 2#, *	28.0 (− 3.6–46.4)	81.9 ± 7.4	< 0.001
Optimal cut-off value	60.9
Rho, HU
Overall#, *	21.6 (1.4–34.3)	70.0 ± 6.1	< 0.001
Reader 1#, *	22.5 (2.1–36.6)	69.1 ± 7.1	< 0.001
Reader 2#, *	20.5 (–1.3–34.2)	70.9 ± 6.4	< 0.001
Optimal cut-off value	51.8
Zeff, HU/Z
Overall#, *	7.59 ± 0.21	7.71 (7.61–7.75)	0.029
Reader 1#, *	7.59 ± 0.23	7.72 (7.63–7.78)	0.032
Reader 2*	7.58 ± 0.22	7.66 ± 0.16	0.012

^*Data expressed as mean ± standard deviation

^#Data expressed as median (p₂₅–p₇₅)

A p value < 0.05 indicated statistical significance and was highlighted in boldface