Table 1.
Functional Lung volume receiving ≥ 20 Gy (FV20) as a percentage of the total functional lung volume for the seven-beam computed tomography (CT-7) plan and the seven-beam single-photon emission CT (SPECT-7) plan
| Patient | CT-7 (%) | SPECT-7 (%) | Change (%) | % Reduction* |
|---|---|---|---|---|
| 1 | 7.64 | 6.26 | 1.38 | 18.06 |
| 2 | 6.6 | 5.32 | 1.28 | 19.39 |
| 3 | 14.86 | 7.91 | 6.95 | 46.77 |
| 4 | 12.44 | 12.51 | –0.07 | –0.56 |
| 5 | 19 | 13.69 | 5.31 | 27.95 |
| 6 | 18.28 | 14.06 | 4.22 | 23.09 |
| 7 | 8.61 | 7.55 | 1.06 | 12.31 |
| 8 | 13.33 | 6.98 | 6.35 | 47.64 |
| 9 | 6.63 | 5.02 | 1.61 | 24.28 |
| 10 | 8.07 | 4.74 | 3.33 | 41.26 |
| Average | 3.14 ±2.46 | 26.02 ±15.45 |
*
Reduction in FV20 in the SPECT-7 plan as compared to FV20 in the CT-7 plan