Background Different studies have proved in recent years that hypofractionated radiotherapy
(RT) improves overall survival of patients affected by locally advanced, unresectable …

Based on the development of new hybrid machines consisting of an MRI and a linear
accelerator, magnetic resonance image guided radiotherapy (MRgRT) has revolutionized …

Background Online adaptive radiotherapy is intended to prevent plan degradation caused
by inter-fractional tumor volume and shape changes, but time limitations make online re …

This study provides a quantitative assessment of the accuracy of a commercially available
deformable image registration (DIR) algorithm to automatically generate prostate contours …

Objectivities The aim of this study was to evaluate inter-fraction movements of lymph node
regions that are commonly included in the pelvic clinical target volume (CTV) for high-risk …

Background We devised a breast-conserving surgery (BCS) utilizing a new image-
processing and projection technique using a radiation treatment planning system (RTPS) …

Deformable image registration (DIR) is a rapidly developing discipline in the field of medical
imaging that has found numerous applications in modern radiation therapy. To be used in …

Prostate radiotherapy gives excellent long-term disease control; however, morbidity from
treatment can negatively impact quality of life. To minimise the risk of toxicity a treatment …

Demons has been well recognized for its deformable registration capability. However, it
might lead to misregistration due to the large spatial distance between the expected …

This chapter is dedicated to virtual imaging for abdominal image-guided radiotherapy
(IGRT). We first discuss pitfalls of traditional three-dimensional/four-dimensional cone-beam …