Table 2 Summary of the descriptive statistics for fmax in healthy subjects at different locations and measured by different modalities, for two cutoff values of spectral energy (95% and 99%). The upper boundary is defined as the mean plus three times the standard deviation and it is the value below which 99.7% of the population is contained
Modality | Location | 95% | 99% | ||||||
|---|---|---|---|---|---|---|---|---|---|
fmax95 (Hz) | Nyquist rate (ms) | fmax99 (Hz) | Nyquist rate (ms) | ||||||
Mean | SD | Upper boundary | Mean | SD | Upper boundary | ||||
CMR | CCA | 6.8 | 0.4 | 8.0 | 62 | 10.7 | 1.7 | 15.8 | 32 |
CFA | 4.5 | 0.7 | 6.6 | 75 | 12.3 | 5.1 | 27.5 | 18 | |
AAo | 3.9 | 0.3 | 4.9 | 103 | 7.7 | 1.1 | 11.0 | 45 | |
DAo | 3.9 | 0.3 | 4.9 | 103 | 9.3 | 1.2 | 13.0 | 38 | |
US | CCA | 7.1 | 1.1 | 10.4 | 48 | 13.6 | 2.8 | 21.9 | 22 |
CFA | 4.9 | 0.9 | 7.6 | 66 | 12.0 | 3.1 | 21.4 | 23 | |