Table 4.
Percent error from measured light dose at the end of treatment with calculated light fluence using (a) direct component only, (b) direct and scattering components, (c) direct component with dual correction method, and (d) direct and scattering components with dual correction method. (Missing points did not get detector position.)
| (a) | Direct Component Only | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Case No. | Diaph | PS | AS | PM | PCW | ACW | Peri | Apex | Average |
| 13 | - | 63.3% | 50.9% | 61.1% | 57. 8% | 57.7% | 53.2% | 65.9% | 59%±5% |
| 16 | - | 64.2% | 63.0% | 41.9% | 49.3% | 60.3% | 71.8% | 80.8% | 62%±12% |
| 20 | - | 80.7% | 78.2% | 63.1% | 72.3% | 79.6% | 73.8% | 75.6% | 75%±6% |
| 22 | - | 67.3% | 61.0% | 74.9% | 87.4% | 57.0% | 80.8% | 59.4% | 70%±11% |
| 24 | - | 91.6% | 81.9% | 66.9% | - | 63.5% | 60.3% | 84.8% | 75%±12% |
| 25 | - | 20.1% | 59.3% | 28.9% | 36.7% | 47.7% | 3.3% | 50.7% | 35%±18% |
| 26 | 55.7% | 55.7% | 14.1% | 22.5% | 36.6% | 43.4% | 20.6% | 30.8% | 35%±15% |
| 27 | - | 32.3% | 26.4% | - | - | 19.0% | 32.4% | - | 28%±6% |
| 28 | - | - | 59.2% | 80.1% | 30.7% | 61.3% | 89.6% | 18.4% | 57%±25% |
| 30 | 50.8% | 22.6% | 58.4% | 16.7% | 28.0% | 47.1% | 50.8% | 67.3% | 43%±17% |
| 33 | 20.7% | 46.3% | 22.6% | 37.0% | 32.3% | 17.0% | 42.7% | 59.0% | 35%±14% |
| 34 | 36.9% | 73.3% | 24.7% | 27. 3% | 24.7% | 14.3% | 6.7% | 52. 9% | 33%±20% |
| Avg. | 41% ±14% |
56% ±23% |
50% ±22% |
47% ±22% |
46% ±20% |
47% ±20% |
49% ±27% |
59% ±19% |
|
| (b) | Direct and Scattering Component | ||||||||
| Case No. | Diaph | PS | AS | PM | PCW | ACW | Peri | Apex | Avg. |
| 13 | - | 4.7% | 7.7% | 2.5% | 0.8% | 0.9% | 5.4% | 7.3% | 4%±3% |
| 16 | - | 2.8% | 1.4% | 19.9% | 11.7% | 1.4% | 9.7% | 19.3% | 10%±7% |
| 20 | - | 5.0% | 9.9% | 15.1% | 7.4% | 3.7% | 1.1% | 0.8% | 6%±5% |
| 22 | - | 4.2% | 10.3% | 8.0% | 19.3% | 11.7% | 12.9% | 15.4% | 12%±5% |
| 24 | - | 16.3% | 6.6% | 8.4% | - | 11.8% | 15.0% | 9.5% | 11%±4% |
| 25 | - | 30.1% | 29.6% | 0.9% | 6.4% | 19.8% | 26.6% | 20.4% | 19%±11% |
| 26 | 26.2% | 26.2% | 6.1% | 30.9% | 35.9% | 21.9% | 0.3% | 12.3% | 20%±12% |
| 27 | - | 23.8% | 15.1% | - | - | 7.1% | 21.1% | - | 17%±6% |
| 28 | - | - | 20.7% | 13.7% | 20.2% | 4.5% | 25.8% | 0.1% | 14%±9% |
| 30 | 8.3% | 24.2% | 15.9% | 23.5% | 14.6% | 6.9% | 8.3% | 23.9% | 16%±7% |
| 33 | 14.1% | 11.6% | 11.5% | 2.3% | 2.4% | 17.8% | 7.9% | 24.3% | 12%±7% |
| 34 | 5.6% | 29.9% | 8.8% | 6.1% | 8.8% | 14.4% | 26.8% | 20.6% | 15%±9% |
| Avg. | 14% ±8% |
16% ±11% |
12% ±7% |
12% ±9% |
13% ±10% |
10% ±7% |
13% ±9% |
14% ±8% |
|
| (c) | Direct Component with Dual Correction | ||||||||
| Case No. | Diaph | PS | AS | PM | PCW | ACW | Peri | Apex | Avg. |
| 13 | - | 5.5% | 13.7% | 5.8% | 8.7% | 5.3% | 10.3% | 19.1% | 10%±5% |
| 16 | - | 4.0% | 4.6% | 28.2% | 42.2% | 19.8% | 6.0% | 38.8% | 21%±15% |
| 20 | - | 8.3% | 12.8% | 59.8% | 9.4% | 13.3% | 10.8% | 3.7% | 17%±18% |
| 22 | - | 12.8% | 3.7% | 11.9% | 7.3% | 12.5% | 5.5% | 6.8% | 9%±3% |
| 24 | - | 22.9% | 10.5% | 6.7% | - | 15.9% | 15.1% | 11.2% | 14%±5% |
| 25 | - | 1.0% | 32.6% | 25.7% | 31.7% | 1.5% | 39.1% | 13.3% | 21%±14% |
| 26 | 34.1% | 30.6% | 30.5% | 35.1% | 23.4% | 8.1% | 35.0% | 55.7% | 32%±12% |
| 27 | - | 18.4% | 14.0% | - | - | 44.3% | 32.8% | - | 27%±12% |
| 28 | - | - | 12.0% | 38.2% | 45.1% | 27.0% | 1.9% | 24.6% | 25%±15% |
| 30 | 19.1% | 12.7% | 24.0% | 7.1% | 10.8% | 21.8% | 19.3% | 23.2% | 17%±6% |
| 33 | 11.3% | 18.8% | 17.3% | 7.2% | 6.3% | 12.2% | 20.7% | 16.2% | 14%±5% |
| 34 | 21.2% | 51.6% | 16.7% | 6.7% | 16.7% | 14.3% | 17.6% | 36.7% | 23%±14% |
| Avg. | 21% ±8% |
17% ±14% |
16% ±9% |
21% ±17% |
20% ±14% |
16% ±11% |
18% ±12% |
23% ±15% |
|
| (d) | Direct and Scattering Component with Dual Correction | ||||||||
| Case No. | Diaph | PS | AS | PM | PCW | ACW | Peri | Apex | Avg. |
| 13 | - | 1.2% | 6.9% | 0.6% | 7.8% | 4.5% | 6.7% | 15.4% | 6%±5% |
| 16 | - | 3.4% | 5.8% | 2.7% | 0.9% | 4.1% | 5.6% | 8.8% | 5%±2% |
| 20 | - | 4.5% | 10.5% | 6.5% | 15.6% | 8.3% | 6.7% | 10.8% | 9%±3% |
| 22 | - | 1.8% | 2.1% | 4.2% | 5.7% | 8.1% | 4.7% | 5.2% | 5%±2% |
| 24 | - | 11.2% | 7.7% | 1.8% | - | 7.9% | 8.6% | 8.8% | 8%±3% |
| 25 | - | 17.0% | 22.2% | 2.0% | 3.1% | 12.9% | 15.1% | 12.1% | 12%±7% |
| 26 | 10.8% | 13.5% | 9.6% | 16.4% | 24.2% | 2.1% | 6.9% | 2.7% | 11%±7% |
| 27 | - | 3.5% | 11.5% | - | - | 0.8% | 2.1% | - | 5%±4% |
| 28 | - | - | 13.1% | 3.4% | 11.4% | 6.0% | 12.3% | 0.5% | 8%±5% |
| 30 | 6.4% | 15.6% | 13.6% | 4.6% | 4.4% | 18.3% | 7.2% | 2.4% | 9%±6% |
| 33 | 1.5% | 2.3% | 21.2% | 15.7% | 17.3% | 4.3% | 15.7% | 0.5% | 10%±8% |
| 34 | 8.5% | 20.7% | 6.7% | 5.7% | 6.7% | 5.7% | 6.7% | 14.7% | 9%±5% |
| Avg. | 7% ±3% |
9% ±7% |
11% ±6% |
6% ±5% |
10% ±7% |
7% ±5% |
8% ±4% |
7% ±5% |
|