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. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: Int J Radiat Oncol Biol Phys. 2010 Apr 13;78(1):297–305. doi: 10.1016/j.ijrobp.2009.11.008

Figure 3.

Figure 3

Evaluation of subject targeting accuracy using a solid water phantom. A: A phantom containing a metal sphere and radiochromic film was placed on the scanner bed and imaged with microCT. B: The microCT image of the phantom showing the metal inclusion, and the radiation treatment plan that was constructed in RT_Image. C: A superposition of a the solid water/metal sphere phantom and the adjacent irradiated film. Crosshairs identify the positions of the center of the sphere and the center of the delivered dose distribution, which agree to within 0.1 mm.