Table 2.

Global mean values of ADC and lung morphometry parameters derived from the FS and prospectively undersampled acquisitions for the 5 healthy volunteers

Participants	Methods	ADC (cm2/s)	R (μm)	r (μm)	h (μm)	Lm (μm)	SVR (cm−1)
H1	FS	0.0353 ± 0.0103	339 ± 58	146 ± 34	194 ± 46	197 ± 44	211 ± 37
	DC-RDN	0.0352 ± 0.0106	341 ± 62	150 ± 36	192 ± 45	200 ± 46	209 ± 41
H2	FS	0.0388 ± 0.0093	354 ± 69	173 ± 37	181 ± 57	225 ± 60	187 ± 38
	DC-RDN	0.0384 ± 0.0099	353 ± 65	168 ± 40	185 ± 54	221 ± 64	192 ± 40
H3	FS	0.0346 ± 0.0090	340 ± 56	141 ± 32	199 ± 42	193 ± 38	214 ± 35
	DC-RDN	0.0347 ± 0.0101	337 ± 63	144 ± 42	194 ± 41	193 ± 43	217 ± 43
H4	FS	0.0390 ± 0.0089	356 ± 67	170 ± 36	186 ± 55	221 ± 52	189 ± 37
	DC-RDN	0.0387 ± 0.0098	351 ± 70	173 ± 44	179 ± 48	218 ± 51	192 ± 39
H5	FS	0.0332 ± 0.0075	339 ± 49	139 ± 28	199 ± 37	191 ± 32	215 ± 31
	DC-RDN	0.0326 ± 0.0092	332 ± 54	137 ± 34	194 ± 40	187 ± 35	220 ± 39
Mean	FS	0.0362 ± 0.0026	346 ± 9	154 ± 16	192 ± 8	205 ± 16	203 ± 14
	DC-RDN	0.0359 ± 0.0026	343 ± 9	154 ± 16	189 ± 7	204 ± 15	206 ± 13
Overall mean differences		−0.72%	−0.81%	0.46%	−1.52%	−0.74%	1.41%

ADC, apparent diffusion coefficient; COPD, chronic obstructive lung disease; DC-RDN, deep cascade of residual dense network; FS, fully sampled; h, alveolar sleeve depth; L_m, mean linear intercept; R, acinar duct radius; r, acinar lumen radius; SVR, surface-to-volume ratio