Skip to main content
. Author manuscript; available in PMC: 2009 May 13.
Published in final edited form as: Phys Med Biol. 2008 Dec 10;54(1):117–133. doi: 10.1088/0031-9155/54/1/008

Figure 2.

Figure 2

Plot of ln(p/(1−p)) vs. mAs/registration using kV acquisitions of an anthropomorphic phantom with implanted fiducial markers. Measured values and least squares fits from equation 1 are shown for kV acquisitions with no MV scatter, scatter from 6 MV photons delivered at 445 mu/min collimated to 4×4 cm2, and scatter from 6 MV photons delivered at 445 mu/min collimated to 10.4×10.4 cm2. 95% confidence intervals and correlation coefficients (cc) are also shown for each fit.