Table 2.

Hyperpolarized ¹²⁹Xe spin-lattice relaxation times for all blood samples

Sample	1	2	3	4	5	6	7
Gas	O2	CO	N2	Air	N2	Mix*	Air
Temp (°C)	25	25	25	25	37	37	37
T1,rbc (s)	6.01  ±  0.26	7.72  ±  0.38	2.95  ±  0.24	5.11  ±  0.66	3.85  ±  0.15	4.00  ±  0.32	6.27  ±  0.33
T1,plasma(s)	5.40  ±  0.27	7.97  ±  0.32	2.81  ±  0.16	5.26  ±  0.70	3.57  ±  0.18	3.90  ±  0.28	6.58  ±  0.42
T1,average(s)	5.71  ±  0.35	7.84  ±  0.47	2.88  ±  0.27	5.19  ±  0.91	3.71  ±  0.22	3.95  ±  0.40	6.42  ±  0.50

The decay of the signal from xenon in plasma/saline and from xenon in the red blood cells were determined independently for both peaks. ∗, mixture of 90% N₂, 5% O₂, and 5% CO₂.