The patients eligible for the study are those treated by radiotherapy on Linac MRI for a mobile cancerous lesion (pancreas, liver, kidneys, adrenals, lung, adenopathy above or below the diaphragm ...).
After signing the consent form, each patient will be randomized to one of two treatment arms:
* Standard arm : Radiotherapy treatment with Linac MRI without non-magnetic shielding
* Experimental arm : radiotherapy treatment with Linac MRI with non-magnetic screen
The aim is to compare the effect of the non-magnetic screen on the blocking of the patient's breathing versus the current procedure (the blocking of the breathing is informed by the staff)
The patients will each receive 5 sessions of radiotherapy on Linac MRI. 100 patients are expected to participate in this study
Before each session will be assessed for anxiety and stress. After each session will be evaluated patient satisfaction, pain intensity and respiratory effort.
The duration of the treatment and therefore of the follow-up of the patient in the study is 1 to 2 weeks
