Construction of a respiratory-induced lung tumor motion model using phase oscillator

摘要

This paper discloses the development of a phase oscillator model for radiotherapy which predicts future position of the lung tumor based on the current and past phase of lung tumor, respiration waveform and heartbeat measurements. We assumed that these phases can be measured at the same time, and tried the prediction of 0.15s ahead of time of the superior-inferior direction of a lung tumor motion. The result of offline simulation shows that the proposed model provides the estimated position of the tumor with 1.5mm RMS error.