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. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Osteoarthritis Cartilage. 2008 Apr 18;16(9):994–1004. doi: 10.1016/j.joca.2008.02.010

Table 3.

Longitudinal measurements of ACR phantom geometry.

Length:
RMS CV% Mean (mm) SD (mm) Min (mm) Max (mm)
Site A 0.14% 147.2 0.21 146.6 147.6
Site B 0.17% 147.3 0.25 146.4 147.5
Site C 0.19% 146.6 0.28 145.8 147.1
Site D 0.14% 147.0 0.21 146.6 147.4
Diameter:
RMS CV% (Isocenter) RMS CV% (+50mm) Mean (mm) SD (mm) Min (mm) Max (mm)
Site A 0.07% 0.05% 189.7 0.13 189.3 189.8
Site B 0.06% 0.07% 190.1 0.15 189.8 190.7
Site C 0.11% 0.13% 189.8 0.21 189.2 190.1
Site D 0.06% 0.06% 189.9 0.12 189.4 190.0