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.
Field sizes for each scenario: population minimum field size, patient minimum field size, and beam minimum field size. A 15mm margin has been added to all dimensions to allow for up to 7.5mm of intrafraction motion in any one direction.
| FS type | Median (cm2) | Min (cm2) | Max (cm2) |
|---|---|---|---|
| Population (Ig) | 5.3 × 6.1 | ||
| Per Patient (Ip) | 3.7 × 3.2 | 4.7 × 1.6 | 5.3 × 6.1 |
| Per Beam (Ib) | 3.5 × 2.7 | 2.2 × 1.8 | 5.3 × 6.1 |
