Evaluation of the Ability to Diagnose the Position of the Intubation Probe Thanks to Lung Ultrasonography

The purpose of this study is to evaluate the diagnostic qualities of lung ultrasonography to monitor the position of the intubation probe. The primary assessment criterion is of study the position of the intubation probe with two examinations carried out independently : * sonography * chest radiography A correct position of the intubation probe will be considered if there is : * Highlighting of the extremity of the intubation probe in endo tracheal * Highlighting bilateral lung sliding