Table 1.
Quantitative results of extrapolate optical properties compared with known values from both mathematical phantom and solid prostate phantom. True μa and μs′ represent the optical properties used for forward calculation (mathematical phantom) or pre-calibrated values (solid phantom) for background and anomalies. Extrap. μa and μs′ represent the mean value of absorption coefficients and reduced scattering coefficient of a 0.6 cm × 0.6 cm cubic of nodes in regions of interest.
| Phantoms | Regions | Trueμa (cm-1) | Extrap.μa (cm-1) | Trueμs′ (cm-1) | Extrap.μs′ (cm-1) |
|---|---|---|---|---|---|
| Math phantom | Background | 0.3 | 0.29±0.05 | 14 | 12.70±1.24 |
| Left anomaly | 0.6 | 0.58±0.02 | 14 | 13.85±0.93 | |
| Right anomaly | 0.3 | 0.38±0.07 | 28 | 20.57±3.34 | |
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| |||||
| Solid phantom | Background | 0.3 | 0.29±0.01 | 15 | 14.99±0.07 |
| Anomaly a | 0.9 | 1.11±0.58 | 15 | 16.11±13.77 | |
| Anomaly b | 0.9 | 0.97±0.27 | 15 | 13.67±2.47 | |
| Anomaly c | 0.3 | 0.21±0.07 | 15 | 17.57±9.72 | |