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Sample composition and the delays in the inversion recovery sequence used for T1 measurements in vitro.
| Sample | 13C Concentration (mM) | TR (s) | Delays | |
|---|---|---|---|---|
| Number | Duration (s) | |||
| [1‐13C] pyruvate | 10 | 220 | 16 | 0.5–200 |
| [2‐13C] pyruvate | 10 | 220 | 16 | 0.5–200 |
| 13C bicarbonate | 20 | 240 | 16 | 1.0–240 |
| [1‐13C] acetaldehyde | 5 | 55 | 16 | 0.1–40 |
