Radiation therapy in which a number of precisely aimed beams of ionizing radiation coming from different directions meet at a specific point, delivering the radiation treatment to that spot.
- Stereotactic surgery
Surgery in which a system of three-dimensional coordinates is used to locate the site to be operated on.
Use of a computer and scanning devices to create three-dimensional pictures. Stereotaxis can be used to direct a biopsy, external radiation, or the insertion of radiation implants.
- Sterilization, female surgical
Female surgical sterilization blocks (or removes part or all of) the fallopian tubes so the egg cannot travel to the uterus. The procedure is done by various surgical techniques, usually under general anesthesia. Complications are rare but can include infection, hemorrhage (bleeding), and problems related to the use of general anesthesia. Female surgical sterilization is […]
- Sterilization, male surgical
Male surgical sterilization is done by vasectomy which involves sealing, tying or cutting a man’s vas deferens, the tube which otherwise would carry the sperm from the testicle to the penis. Vasectomy is a relatively short operation, usually takes under 30 minutes, and carries the risk of surgical complications such as bleeding or infection. Vasectomy […]
- Sterilization, surgical
Surgical sterilization is a contraceptive option for people who do not want children in the future. It is considered permanent because reversal requires major surgery that is often unsuccessful. Female sterilization blocks the fallopian tubes so the egg cannot travel to the uterus. The procedure, including tubal ligation is done by various surgical techniques, usually […]