Megavoltage computer tomography during radiotherapy

摘要

(57) Abstract The neutron leakage which passes by the modulation occulter, and/or it is derived from other means, it can obtain the megavolt CT image which the dose decreases making use of the line pencil which is amplified with the imperfect high line pencil data which was collected during radiotherapy data low. As for the capacity which constructs tomography projection from the line pencil speed which changes significantly, considering mechanical leaf motion, using the air scan where you could open the window, it is offered. In addition as for these manners, during radiotherapy which does not scan in excess the means which all patients to image are converted are offered.