Dose Constraints
Interactive reference for radiation oncology treatment planning. Search across the ASTRO DVH Compendium and a database of 3,000+ constraints.
Quick Reference
Conventional: 1.8–2.2 Gy/fx
Moderately Hypo: 2.2–5.0 Gy/fx
SBRT/Ultra-hypo: >5.0 Gy/fx
CV: Complementary volume (spared)
Quick Reference
Sources: QUANTEC, TG-101, Timmerman, UK SABR, clinical trials
Levels: Must, Should, Can, Recommended
Volume Types: D0.035cc (near-max), Dmean, V%
Last Updated: Feb 6, 2026
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