Titlebook: Radiation Oncology: A Physicist‘s-Eye View; Michael Goitein Book 2008 Springer-Verlag New York 2008 Medical Physics.cancer.imaging.magneti

crumble

ostensible

爵士乐

Proton Therapy in the Patient,o not depend on the patient’s geometry nor on the treatment planning aims. This chapter addresses the more clinical side of the problem; how one tailors proton beams to the patient, and how one plans a treatment using protons.

debris

zonules

青石板

易发怒

Acetabulum

Biology Matters,When tissues are irradiated, a complex and not fully understood chain of events takes place. At the highest level one can simply say that the radiation interacts with the tissues “through physics”. Then chemistry takes over, followed by biology. This progression is illustrated in Figure 5.1.

impale

勉强

Motion Management,One of the daunting problems in radiation therapy is to accurately aim a beam of invisible radiation at an invisible moving target xwithout missing it, and without making the beam so generous that, while it covers the target, it irradiates too large a volume of normal tissue to be acceptable.