Figure 2From: Statistical analysis of IMRT dosimetry quality assurance measurements for local delivery guidelineFrequency histograms vs. percentage dose difference for H&N cancer (a), brain tumor (b), prostate or abdominal cancer (c), and all IMRT cases (d). The vertical red dash lines indicate the mean values of percent dose difference for each treatment site with arrows showing the amount of shift from 0%.Back to article page