Medical Radiation Biology

acid activity acute addition agents amount animals appears arise associated atomic bases biologic body bone breaks cancer cause cells cent changes charged chemical chromosome clinical contains course curve damage depending direct dose effects electron energy enzyme evidence example exposure factors Figure fraction function gene genetic given groups half-life human important incidence increased indicate individual induced injury involved ionizing radiation irradiation known less levels material mechanism molecule mutations neutrons normal nuclear observed occur organ oxygen particles patient period phase photon population possible present primary produced protection protein radiation therapy radicals radio radioactive radiologist Radiology radiosensitivity rads range rays reaction referring relation relatively repair reported response result sensitive shown single sources specific strand structure studies synthesis tion tissue treated treatment tumor types unit usually weeks X-rays