Your radiation therapy options
Radiation treatment can be given internally (placed inside of your body - prostate seed implants, brachytherapy, mammosite) or externally (from the outside of your body - 3-dimensional radiation, IMRT, SRS, etc.).
When radiation therapy is given internally it is called an invasive treatment option, since requires the entry of a needle, catheter, or other instrument into your body. When radiation therapy is given externally it is a noninvasive treatment option, since it similiar to giving you an X-ray.
Since invasive therapies invade the body they generally come with more side effects than non-invasive therapies. In 2004, Varian introduced the Trilogy linear accelerator, which allowed, for the first time, patients to receive the following non-invasive external beam therapies from one machine:
- 3D conformal radiation therapy
- Intensity-modulated radiation therapy (IMRT)
- Electron therapy
- Conformal arc therapy
- Gated radiotherapy (GATING)
- Image-guided radiation theapy (IGRT)
- Single-session or fractionated stereotactic radiosurgery (SRS)
- Intensity-modulated radiosurgery (IMRS)
