Table 1.

Subject demographics, PFT results, and spectral parameters.

				PFTs (% pred)		Intensity	Frequency (ppm)			Linewidth (ppm)			Phase (degrees)
	Subject ID	Sex	Age	DLCO mL/min/mmHg	FVC L	RBC:barriers	RBC	Barrier 1	Barrier 2	RBC	Barrier 1	Barrier 2	RBC	Barrier 1	Barrier 2	SNR
Healthy	1	M	26	25.1 (79%)	4.4 (90%)	0.496	216.8	202.2	196.9	11.1	15.3	9.1	0.0	282.2	67.5	28.2
	2	M	65	27.9 (113%)	3.7 (97%)	0.418	216.6	201.2	196.1	11.1	13.6	9.4	0.0	302.1	80.4	30.6
	3	F	29	14.9 (76%)	2.8 (103%)	0.431	215.4	201.3	195.8	13.3	14.3	9.8	0.0	295.2	82.2	24.0
	4	M	27	26.5 (92%)	3.2 (65%)	0.539	216.1	200.1	195.9	11.3	13.8	9.0	0.0	306.3	67.0	22.0
	5	F	21	20.7 (94%)	2.8 (83%)	0.442	215.8	202.2	196.8	12.2	15.7	9.7	0.0	274.0	69.5	29.8
	6	F	21	20.4 (91%)	4 (112%)	0.488	217.4	201.0	196.4	11.1	12.1	8.5	0.0	316.6	78.7	31.5
	7	F	22	24.7 (102%)	4.2 (97%)	0.382	215.8	201.8	196.3	11.6	13.6	8.6	0.0	281.3	63.7	33.8
	8	M	24	32.2 (97%)	4.5 (82%)	0.458	217.1	202.3	196.2	12.2	16.0	10.7	0.0	277.2	72.7	26.3
	9	M	37	16.8 (55%)	3.3 (67%)	0.321	217.8	201.6	196.9	11.5	12.9	9.2	0.0	294.5	74.4	27.1
	10	M	54	23.2 (83%)	5.1 (106%)	0.349	216.2	199.0	195.3	10.9	10.8	8.8	0.0	312.9	65.9	31.6
	11	M	29	36.2 (112%)	5.6 (103%)	0.494	215.5	200.4	196.3	10.3	18.0	8.8	0.0	251.2	54.3	31.1
	12	M	30	30.5 (95%)	5 (103%)	0.495	217.4	202.2	197.1	10.8	18.8	9.6	0.0	260.5	60.1	32.3
	Mean		32	24.9 (90.8%)	4 (92.3%)	0.443	216.5	201.3	196.3	11.5	14.6	9.3	0.0	287.8	69.7	29.0
	Std Dev		13.8	6.3 (16.1%)	0.9 (15.2%)	0.066	0.8	1.0	0.5	0.8	2.3	0.6	0.0	20.4	8.4	3.6

				PFTs (% pred)		Intensity	Frequency (ppm)			Linewidth (ppm)			Phase (degrees)
	Subject ID	Sex	Age	DLCO mL/min/mmHg	FVC L	RBC:barriers	RBC	Barrier 1	Barrier 2	RBC	Barrier 1	Barrier 2	RBC	Barrier 1	Barrier 2	SNR
IPF	13	M	57	6.1 (23%)	1.78 (42%)	0.152	215.6	200.7	195.6	12.4	11.1	6.9	0.0	308.2	76.7	31.5
	14	M	68	10.2 (41%)	1.25 (29%)	0.143	215.4	200.8	195.4	11.8	10.7	6.6	0.0	318.1	78.7	21.8
	15	M	79	7.2 (31%)	2.27 (55%)	0.186	215.8	200.6	195.1	12.0	11.3	7.2	0.0	309.1	76.3	35.8
	16	F	60	11.9 (65%)	2.51 (85%)	0.196	215.9	200.1	194.7	11.8	12.5	8.5	0.0	314.3	82.5	32.9
	17	M	68	11.6 (48%)	1.86 (49%)	0.300	215.6	202.8	196.3	10.8	12.2	7.9	0.0	277.6	62.4	31.8
	18	M	70	17 (72%)	4.3 (99%)	0.240	215.7	200.8	196.1	10.6	11.2	7.3	0.0	299.3	71.8	31.9
	19	M	62	12.8 (47%)	3.1 (62%)	0.344	215.8	201.0	195.6	10.8	10.3	6.9	0.0	319.7	79.0	33.4
	20	F	67	8.9 (54%)	1.68 (77%)	0.173	216.7	201.2	196.3	11.2	10.8	7.1	0.0	311.2	71.8	35.9
	21	M	66	14.8 (59%)	2.67 (64%)	0.277	216.3	201.8	196.1	11.7	11.8	8.1	0.0	296.0	71.3	31.2
	22	M	69	13.6 (53%)	3.55 (76%)	0.344	216.2	201.0	195.9	11.3	10.3	7.0	0.0	318.8	76.0	33.3
	23	M	81	13.3 (59%)	2.46 (61%)	0.221	215.3	200.3	195.9	10.6	12.8	6.7	0.0	316.7	70.6	19.0
	24	M	75	11.4 (48%)	2.31 (54%)	0.230	216.1	200.8	195.8	10.5	11.4	7.4	0.0	299.4	68.8	33.3
	Mean		69	11.6 (50%)	2.5 (62.8%)	0.234	215.8	201.0	195.7	11.4	11.4	7.3	0.0	308.1	74.3	30.8
	Std Dev		7.2	3.1 (13.8%)	0.9 (19.3%)	0.073	0.4	0.8	0.5	0.6	0.9	0.6	0.0	12.7	5.4	5.4