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Patient care request an appointment log in to patient account see treatment & diagnosis services plan your visit find a doctor download mayo clinic patient app health information diseases & conditions a-z symptom checker drugs & supplements a-z tests & procedures a-z healthy living expert blogs mayo clinic store for medical professionals online services for referring physicians grand rounds publications continuing medical education mayo medical laboratories research explore research areas find clinical trials research faculty postdoctoral fellowships discovery's edge magazine search publications education mayo graduate school mayo medical school mayo school of continuous professional development mayo school of graduate medical education mayo school of health sciences alumni association request an appointment find a doctor find a job log in to patient account give to mayo clinic facebook twitter youtube main navigation disease & treatments doctors & departments patient & visitor guide online services for medical professionals sub navigation doctors & departments doctors departments arizona florida minnesota support mayo now connect with others who've been there. Share stories. Ask questions. Learn. Join mayo clinic's online community. Share on: email print radiation oncology in arizona overview services doctors research patient stories resources for physicians appointments   specialty groups   news overview radiation therapy, also called radiotherapy, uses carefully targeted and regulated doses of high-energy radiation to kill cancer cells. Radiation destroys cancer cells through a process called ionization. Some cells die immediately after treatment, but most die because the radiation damages the chromosomes and dna so that the cells can no longer divide and the cancer cannot grow. cheap viagra without prescription viagra sale canada viagra for sale buy cheap viagra cheap generic viagra cheap pills viagra buy viagra online viagra for sale cheap viagra online viagra online Radiation therapy may be your only cancer treatment, or it may be used in combination with other cancer treatments, such as surgery and chemotherapy. A radiation oncologist is a doctor who has advanced training in treating cancer with radiation. This doctor evaluates you, prescribes the radiation treatment, directs the treatment team, monitors your progress, and manages any.