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.
Dose constraints for heart and substructures in breast radiotherapy
| Volume | Constraint | Value |
|---|---|---|
| Whole heart | Mean heart dose | <2.5 Gy |
| Left ventricle | Dmean LV | <3 Gy |
| V5LV | <17% | |
| V23LV | <5% | |
| LAD | DmeanLAD | <10 Gy |
| V30LAD | <2% | |
| V40LAD | <1% |
LV left ventricle; LAD left anterior descending artery; Dmean mean dose of the volume; VxLV percent of left ventricle volume receiving ≥ x Gy
