Table 3:

Qualitative analysis of overall quality and gray-white matter differentiation in 80-kVp and 70-kVp whole-brain CTP^a

	70 kVp	80 kVp	P Value
Overall quality
CBF	2.95 ± 0.167	2.81 ± 2.84	.0459
CBV	2.95 ± 0.167	2.76 ± 0.305	.0173
TT	2.89 ± 0.224	2.69 ± 0.276	.0113
GM-WM differentiation
CBF	2.91 ± 0.187	2.83 ± 0.314	.5598
CBV	2.93 ± 0.178	2.70 ± 0.347	.0278
TT	2.86 ± 0.231	2.69 ± 0.276	.0630

Note:—TT indicates transit time.

^aData are presented as means and SD.