Stereotactic Radiosurgery (SRS)
SRS, or stereotactic radio surgery, is a technique that is most commonly used for tumors in the brain or spinal column. Unlike IMRT, SRS is typically delivered in a maximum of five sessions using higher doses of radiation with each session. Despite the use of the word "surgery" in its name, SRS does not involve removing the tumor with a surgical blade. Instead, a focused high-intensity beam of radiation is used to target the tumor.