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. Author manuscript; available in PMC: 2024 Jul 30.
Published in final edited form as: Radiother Oncol. 2020 Apr 9;148:44–50. doi: 10.1016/j.radonc.2020.04.007

Table 4.

Interfraction percent dose changes due to rotational shifts.

Mean Median Q1 Q3
CTV dose (%)* 0.28 0.00 0.00 0.00
CTV V95% 0.61 0.01 −0.25 1.42
Bladder dose (%)* 0.38 0.02 −0.30 0.53
Bladder V32.5 (%) 0.32 −0.05 −0.13 0.11
Rectum dose (%)* −0.08 0.10 −0.70 1.15
Rectum V32.5 (%) −0.42 −0.07 −0.25 −0.01
Rectum V27.5 (%) −0.50 −0.18 −0.39 0.06

CTV: clinical target volume; CTV V95%: proportion of CTV volume receiving 95% of prescribed dose or more. Coverage goal was CTV95% to be >98% ±5%; V32.5: proportion of volume receiving 32.5 Gy or more; V27.5: proportion of volume receiving 27.5 Gy or more; Q1: 1st quartile; Q3 = 3rd quartile;

*

Expressed in relative percentage. Non-asterisk values are expressed in absolute percentages.