5. Analysis of correspondence between width of gating window and chest wall position during deep inspiration breath-hold (DIBH) for left-sided breast radiotherapy

Purpose Aim of our study is to verify the correspondence between gating window width and chest wall position by analysis of Respiration Waveform acquired by Varian RPM Respiratory Gating System during treatments of left-sided breast in DIBH. Methods Two CT series were obtained for each patient, in free breathing (FB) and DIBH using RPM. In DIBH the width of the gating window, i.e. the allowed chest wall motion, was identified for each patient...