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Organ motion in the thorax and abdomen during breathing is problematic in radiotherapy(RT).For lung tumors,it has been reported that the amplitude of respiratory motion can be more than 2 cm.Such motion presents significant limitations during the entire RT process.Interplay between target motion and scanned ion beam can cause clinically intolerable under-and over-dosages within the target volume.Several motion mitigation techniques such as gating,beam tracking and rescanning are currently being investigated to overcome this restriction.To enable detailed experimental studies of potential mitigation techniques,a
Organ motion in the thorax and abdomen during breathing is problematic in radiotherapy (RT) .For lung tumors, it has been reported that the amplitude of respiratory motion can be more than 2 cm.Such motion presents significant limitations during the entire RT process.Interplay Between target motion and scanned ion beam can cause clinically intolerable under-and over-dosages within the target volume. Several motion mitigation techniques such as gating, beam tracking and rescanning are currently being investigated to overcome this restriction. To enable detailed experimental studies of potential mitigation techniques, a