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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Pract Radiat Oncol. 2014 Dec 17;5(4):e299–e308. doi: 10.1016/j.prro.2014.11.003

Table 4.

Comparison of the greatest head and neck regional motion between groups

ROIs Group 1† maximal displacement Group 2‡ maximal displacement P-value
Mean (SD) Mean (SD)
Posterior cranial fossa 5.9 (3.5) 6.4 (4.1) 0.5
Oral cavity 11.9 (5.6) 5.1 (3.2) <.0001*
Floor of mouth 12.7 (5.7) 7.5 (3.5) <.0001*
Oropharynx 17.4 (7.9) 16.2 (7.5) 0.5
Larynx 18.6 (7.9) 16.4 (7.7) 0.2
Right neck 8.8 (5.3) 8.8 (4.2) 0.9
Left neck 12.0 (5.9) 10.5 (4.5) 0.2

Abbreviation: SD = standard deviation

†

n = 50

‡

n = 29