Table 2.
Frequencies and widths of resonances in healthy volunteers and subjects with IPF
| Frequency, Hza |
Width, Hz |
|||||
|---|---|---|---|---|---|---|
| RBC (ppm) | Barrier (ppm) | Gas | RBC | Barrier | Gas | |
| Healthy | 342.2 ± 15.5 (217.4) | 0.0 ± 11.0 (198.0) | −3497.0 ± 6.5 | 166.5 ± 16.5 | 144.4 ± 10.4 | 30.2 ± 9.6 |
| IPF | 298.9 ± 21.7 (215.1) | −5.0 ± 9.7 (198.2) | −3500.2 ± 13.8 | 125.8 ± 16.8 | 124.7 ± 6.0 | 18.6 ± 6.0 |
| P value | 0.003 | 0.18 | 0.18 | 0.0002 | 0.0009 | 0.01 |
Values are means ± SD.
a
Frequencies are referenced to the mean barrier resonance frequency in the healthy volunteers. Chemical shift (ppm) referenced to the gas phase frequency of 17.66 MHz.