Table 2.
Dosimetric parameter comparison
| Organ | Treatment modality |
|
|---|---|---|
| HDRB | SBRT | |
| Target (prostate) | ||
| V100% (%) | 94.9±3.6 | 97.9±2.1 |
| D90% (%) | 103.6±4.0 | 99.8±3.4 |
| Rectum | ||
| D0.1cm3 (Gy) | 75.8±5.0 | 98.5±5.3 |
| D2cm3 (Gy) | 60.8±4.5 | 88.8±6.9 |
| Urethra | ||
| D10% (%) | 106.2±4.1 | 102.2±3.1 |
Values are presented as mean ± standard deviation. Doses represented as the percent of the prescription dose.
HDRB, high dose rate brachytherapy; SBRT, stereotactic body radiotherapy; V100%, volume of the prostate (gross tumor volume) receiving 100% of the prescription dose; D90%, radiation dose delivered to 90% of the prostate (gross tumor volume); D0.1cm3, maximum dose received by 0.1 cm3 of the anterior rectal wall; D2cm3, maximum dose received by 2 cm3 of the anterior rectal wall; D10%, dose received by 10% of the urethra volume.