Table 3.

Objective measurement of different reconstruction algorithms

	FBP	50% ASIR-V	100% ASIR-V	DL-H	F	P
5 mm images
GM CT	32.58 ± 2.19	32.74 ± 2.36	32.77 ± 2.33	32.46 ± 2.31	0.23	0.88
GM SD	4.51 ± 1.15	3.35 ± 0.84	2.28 ± 0.62*	2.26 ± 0.50*	93.83	< 0.001
WM CT	25.75 ± 2.66	25.49 ± 2.82	25.52 ± 2.84	25.56 ± 2.73	0.10	0.96
WM SD	4.28 ± 0.84	3.16 ± 0.60	2.21 ± 0.57	2.00 ± 0.34	159.18	< 0.001
GM SNR	7.67 ± 1.83	10.35 ± 2.44	15.40 ± 4.29*	15.03 ± 3.13*	82.28	< 0.001
WM SNR	6.20 ± 1.12	8.28 ± 1.46	12.05 ± 2.42	13.07 ± 2.24	159.09	< 0.001
CNR	1.61 ± 0.60	2.30 ± 0.79	3.33 ± 1.10*	3.30 ± 1.06*	46.08	< 0.001
0.625 mm images
GM CT	32.57 ± 2.62	32.71 ± 2.68	32.76 ± 2.57	32.64 ± 2.52	0.06	0.98
GM SD	8.23 ± 1.68	5.74 ± 1.18	3.43 ± 0.80*	3.35 ± 0.68*	221.42	< 0.001
WM CT	25.36 ± 3.00	25.37 ± 3.06	25.42 ± 3.00	25.47 ± 2.85	0.02	1.00
WM SD	8.07 ± 1.57	5.60 ± 1.13	3.38 ± 0.81*	3.11 ± 0.58*	247.66	< 0.001
GM SNR	4.11 ± 0.86	5.94 ± 1.31	10.09 ± 2.53*	10.09 ± 1.96*	157.54	< 0.001
WM SNR	3.24 ± 0.67	4.68 ± 0.97	7.86 ± 1.80	8.40 ± 1.45	201.80	< 0.001
CNR	0.91 ± 0.41	1.33 ± 0.55	2.21 ± 0.85*	2.26 ± 0.77*	54.59	< 0.001

SG: clarity level of sulci/cisterns boundaries; BM: boundaries between the white and gray matters; WQ: whole image quality

*Without significant statistical differences for the numbers with * between the paired comparison