Table 3.
Summary of temporal lobe radiation tolerance expressed as V10-75using paired t-tests and ROC curve
| Area under ROC curve | β | P | Lower limit | Upper limit | Cutoff point (%) | Sensitivity | Specificity | |
|---|---|---|---|---|---|---|---|---|
| V10* |
0.555 |
0.093 |
0.552 |
0.374 |
0.736 |
|
|
|
| V20 |
0.647 |
0.091 |
0.11 |
0.47 |
0.825 |
|
|
|
| V25 |
0.687 |
0.087 |
0.042 |
0.517 |
0.858 |
23.325 |
0.7 |
0.75 |
| V30 |
0.74 |
0.084 |
0.009 |
0.575 |
0.905 |
19.225 |
0.75 |
0.8 |
| V35 |
0.729 |
0.087 |
0.013 |
0.558 |
0.899 |
15.09 |
0.75 |
0.8 |
| V40 |
0.78 |
0.08 |
0.002 |
0.623 |
0.937 |
10.53 |
0.8 |
0.8 |
| V45 |
0.798 |
0.076 |
0.001 |
0.649 |
0.946 |
8.537 |
0.8 |
0.85 |
| V50 |
0.825 |
0.7 |
0.000 |
0.687 |
0.936 |
7.114 |
0.8 |
0.9 |
| V55 |
0.855 |
0.062 |
0.000 |
0.733 |
0.977 |
5.27 |
0.8 |
0.9 |
| V60 |
0.85 |
0.066 |
0.000 |
0.72 |
0.98 |
2.72 |
0.85 |
0.85 |
| V65 |
0.85 |
0.068 |
0.000 |
0.716 |
0.984 |
1.44 |
0.85 |
0.85 |
| V70 | 0.835 | 0.071 | 0.000 | 0.696 | 0.974 | 0.379 | 0.85 | 0.85 |
Abbreviation: ROC Receiver operating characteristic.
*V10 is the volume of the temporal lobe that received more than 10 Gy; other volumes are indicated in a similar manner.