Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Penumbra (mm) and lateral dose‐rate gradient (% per mm) comparison for conventional and FLASH electron beams at 3‐cm depth for 6 × 6 cm2 applicator with 2 cm diameter circular cutout, 6 × 6 cm2 applicator, 10 × 10 cm2 applicator, and 15 × 15 cm2 applicator.
| Penumbra (mm) | Lateral dose‐rate gradient (%/mm) | |||
|---|---|---|---|---|
| Applicator size | Conventional | FLASH | Conventional | FLASH |
| 2 cm cutout | 10.7 | 10.2 | 5.6 | 5.9 |
| 6 × 6 cm2 | 11.3 | 11.4 | 5.3 | 5.3 |
| 10 × 10 cm2 | 11.4 | 12.2 | 5.3 | 4.9 |
| 15 × 15 cm2 | 11.2 | 14.0 | 5.4 | 4.3 |
