Table 2.
BED10 Parameters for the GTV and PTV.
| RTRT (n = 13) | g-SBRT (n = 7a) | P Value | |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| GTV | |||
| Volume (mL) | 50.5 (42.0) | 48.6 (61.9) | .94 |
| Dmean (Gy) | 73.9 (1.4) | 86.9 (14.9) | .0049 |
| Dmin (Gy) | 47.2 (14.5) | 73.0 (25.1) | .0088 |
| Dmax (Gy) | 80.9 (3.7) | 90.1 (14.7) | .041 |
| D98 (Gy) | 59.1 (9.4) | 89.3 (15.0) | .0013 |
| D50 (Gy) | 75.0 (1.1) | 87.1 (14.5) | .0067 |
| D2 (Gy) | 79.5 (2.6) | 81.1 (16.6) | .029 |
| PTV | |||
| Volume (mL) | 148.6 (87.7) | 118.1 (102.9) | .49 |
| Dmean (Gy) | 69.1 (2.8) | 81.7 (13.7) | .0043 |
| Dmin (Gy) | 29.0 (11.1) | 44.6 (17.8) | .026 |
| Dmax (Gy) | 81.4 (3.8) | 90.2 (14.7) | .027 |
| D98 (Gy) | 46.7 (12.3) | 66.5 (18.6) | .0098 |
| D95 (Gy) | 40.0 (13.4) | 61.0 (19.7) | .011 |
| D50 (Gy) | 72.7 (1.5) | 83.1 (13.3) | .010 |
| D2 (Gy) | 80.0 (2.5) | 89.1 (14.8) | .036 |
a One patient was excluded from this analysis because dosimetric data were not available.
Abbreviations: BED, biologically effective dose; Dmax, maximum dose; Dmean, mean dose; Dmin, minimum dose; Dxx, the dose received by xx % of the GTV or PTV volume; g-SBRT, general stereotactic body radiotherapy; GTV, gross tumor volume; PTV, planning target volume; RTRT, real-time tumor-tracking radiotherapy; SD, standard deviation.
P values in boldface indicate statistical significance (P < 0.05).