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.
Distribution of point dose differences for each group. The vertical axis represents the percentage dose difference between the PinPoint ionization chamber measured doses and the MultiPlan-calculated doses. Solid black bars represent the mean dose differences for each group. *: P < 0.05, **: P < 0.001, SPE: group with smaller potential errors, LPE: group with larger potential errors.
