End of treatment cone-beam computed tomography (CBCT) is predictive of radiation response and overall survival in oropharyngeal squamous cell carcinoma

Table 3 Intra-treatment change in nodal size by treatment response

	Complete responders	Non-complete responders
CC percent change from CT Sim to EOT CBCT
Median	28.8%	7.7%
Range	2.5–75.3	0.4–44.4
2D percent change from CT Sim to EOT CBCT
Median	56.9%	38.2%
Range	1.8–82.9	7.6–73.8
Volumetric percent change from CT Sim to EOT CBCT
Median	65.3%	48.8%
Range	10.9–95.6	9.8–70.0

Percent change in craniocaudal (CC), two-dimensional (2D) and volumetric size of largest nodal deposit as measured from the time of CT simulation (CT Sim) to the end-of-treatment cone beam CT scan (EOT) reported as median and range for responders and non-responders

ISSN: 1748-717X