Jan Ehrhardt • Cristian Lorenz Editors
2013
It has never been safe to assume motion is absent in external beam radiotherapy, although this was common until recently. Body motion is intrinsically complex, often autonomous and not readily predictable in general. Autonomous organ motion, including the entire gut, heart, lungs, kidneys and ureters, bladder, uterus, and to some extent the entire bronchial and arterial trees are present in vivo. Voluntary motion further compounds the complexity of motion detection, tracking, prediction, and compensation…