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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Acad Radiol. 2010 Oct 14;17(12):1525–1534. doi: 10.1016/j.acra.2010.08.005

Table 4.

The measured Tube 1 wall dimensions compared to the tilt-corrected wall dimensions.

Angle (degrees) Pim (Ref.= 9.42 mm) Picorr WTm (Ref. = 0.6 mm) WTcorr WAm (Ref = 6.79 mm2) WAcorr WA%m (Ref. = 48.98 %) WA%corr
0 7.97 8.59 1.05 0.85 11.79 9.62 69.83 62.11
6 7.86 8.50 1.08 0.88 12.09 9.87 70.95 63.20
17 8.01 8.57 1.08 0.90 12.29 10.32 70.49 63.89
22 8.16 8.48 1.13 1.03 13.20 12.15 71.17 68.12
27 8.58 8.81 1.12 1.05 13.50 12.73 69.57 67.52
43 10.03 10.81 1.05 0.92 14.15 12.67 63.38 59.44
60 10.97 13.56 1.31 1.05 19.97 18.44 65.22 62.46

Note: All measurements made using phase congruency method and 350 mm field of view

Pi – inner perimeter (mm); WT – wall thickness (mm); WA – Wall area (mm2); WA% - wall area percent; m – measured value; corr –corrected value; Ref. - reference value based on inner and outer diameter reported by manufacturer