Search results
Results from the WOW.Com Content Network
The gamma knife directs more than 200 thin beams of gamma radiation at different angles toward a single point in a person's brain. While each beam delivers a trivial amount of radiation, the spot where they converge receives enough energy to destroy that tissue, making the gamma knife a precision tool for attacking small tumors , malformed ...
This work expanded upon earlier efforts in the 1980s to adapt standard linear accelerators for radiosurgery. The inaugural CyberKnife system was installed at Stanford University in 1991, receiving clearance for clinical investigation by the U.S. Food and Drug Administration (FDA) in 1994.
See proton therapy for a good example of the different effects of intensity-modulated radiation therapy (IMRT) vs. charged particle therapy. This procedure reduces damage to healthy tissue between the charged particle radiation source and the tumor and sets a finite range for tissue damage after the tumor has been reached.
Radiosurgery is surgery using radiation, [1] that is, the destruction of precisely selected areas of tissue using ionizing radiation rather than excision with a blade. Like other forms of radiation therapy (also called radiotherapy), it is usually used to treat cancer.
Gamma irradiation is exposure to ionizing radiation with gamma rays. It may also refer to the following processes in particular: Ionizing radiation sterilization; Food irradiation; Gamma knife, used in radiosurgery
Comedian Bridget McGuire shares the intrusive thoughts with harm that her obsessive compulsive disorder caused, and how stand-up got her out of her own head.
Cobalt units use radiation from cobalt-60, which emits two gamma rays at energies of 1.17 and 1.33 MeV, a dichromatic beam with an average energy of 1.25 MeV. The role of the cobalt unit has largely been replaced by the linear accelerator, which can generate higher energy radiation.
Just days after Arnold Schwarzenegger underwent surgery to have a pacemaker fitted, the actor and former California governor shared a new photo of himself via Instagram.. In the snap ...