Abstract
Introduction Cancer patients often suffer weight loss along their treatment, which might affect the result of the planned treatment. Purpose To investigate the effect of patient weight loss on the Head and Neck (HN no variations for Organs at Risk (OARS) were considered. Results PTVs Dmean increased around 5% and HI worsened as patient body contour decrease. Dmean PRV spinal cord has small variations less than 3%. Dmean of parotid glands decreased (till 10%) as the patient body contour shrugged. Conclusion Patient weight lose do not affect critically to OARs (spinal cord and parotid glands. Nevertheless, for PTVs there is a worsening of the HI and an increase of Dmean as the patient body contour decrease. In our center, daily Cone Beam CT is performed, triggering a resimulation process when diameter variation us higher than 4 mm. Disclosure There is no disclosure.
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