Table 6:

Qualitative analysis of granularity: GM-WM differentiation and overall quality in ULDCT, LDCT, and SDCT^a

	ULDCT	SDCT	P	LDCT	SDCT	P	ULDCT	LDCT	P
Granularity	2.82 ± 0.47	3.38 ± 0.58	.023	4 ± 0.42	3.38 ± 0.58	.032	2.82 ± 0.47	4 ± 0.42	.003
GM-WM diff	3.50 ± 0.67	2.90 ± 0.59	.004	3.79 ± 0.49	2.90 ± 0.59	.034	3.50 ± 0.67	3.79 ± 0.49	.277
Overall quality	3.25 ± 0.45	3.25 ± 0.52	.908	4.08 ± 0.51	3.25 ± 0.52	.022	3.25 ± 0.45	4.08 ± 0.51	.003

Note:—GM-WM diff indicates gray matter–white matter differentiation.

^aData are presented as mean and SD.