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24

Motion and dose – primary target

Jadon et al. A systematic review of organ motion and

image-guided strategies in external beam

radiotherapy for cervical cancer. Clin Oncol (R Coll

Radiol). 2014 Apr;26(4):185-96

39 relevant studies

Patient specific motion: 5-40mm

Population based margins would be large (up to 40mm)

Most studies evaluate geometry

Few studies evaluate coverage (e.g. V95%)

1 study evaluates dosimetric impact (D98)