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Table 2 Coefficients for the 10th, 25th, 50th, 75th, and 90th percentile curves with the functional form of Eq. 1 for peripheral lesions, excluding RTOG 0915 major deviations. The standard error for each coefficient is included in parentheses

From: Lung Stereotactic Body Radiation Therapy (SBRT) dose gradient and PTV volume: a retrospective multi-center analysis

Percentile (%)

A

B

90

0.507 (0.059)

0.216 (0.022)

75

0.547 (0.026)

0.210 (0.009)

50

0.562 (0.017)

0.218 (0.006)

25

0.583 (0.021)

0.222 (0.007)

10

0.602 (0.020)

0.225 (0.007)