Table 1.

SNR, whole-lung mean, and whole-lung standard deviation for ventilation, RBC, and Barrier images of healthy subjects. Values are expressed as the cohort mean ± standard deviation. Given similar xenon dose equivalents were given for standard and fast acquisitions (152 and 159 mL), the differences in SNR due to xenon polarization are expected to be minimal. Abbreviations: Vent – Ventilation Image, SNR – Signal to Noise Ratio, RBC – Red Blood Cell

Scan	Vent SNR	Total Dissolved SNR	Barrier SNR	RBC SNR	Vent Mean	Barrier Mean	RBC Mean	Vent Standard Deviation	Barrier Standard Deviation	RBC Standard Deviation
Standard	15±4	23±8	15±5	8±3	0.43±0.07	0.73±0.10	0.45±0.07	0.20±0.02	0.22±0.11	0.25±0.13
Fast	18±5	15±6	9±4	5±2	0.41±0.07	0.72±0.13	0.45±0.08	0.22±0.03	0.24±0.08	0.28±0.09
Fast1500	20±5	19±7	12±4	6±3	0.41±0.08	0.73±0.13	0.44±0.09	0.22±0.03	0.21±0.08	0.24±0.07
Fast1000	21±4	23±8	15±5	8±3	0.41±0.07	0.73±0.14	0.44±0.09	0.22±0.03	0.18±0.04	0.20±0.05