The Comprehensive Cancer Center
The Trilogy Stereotatic System
One Machine, Multiple Therapies
The Trilogy system can deliver:
- 3D conformal radiotherapy (3DCRT)—used to treat
tumors that may be located too close to vital organs and structures
for other forms of radiation therapy. Because higher doses of
radiation can be delivered to tumors while reducing the amount
of radiation received by the surrounding, healthy tissues, 3DCRT
increases the rate of tumor control while decreasing radiation-related
side effects.
- Intensity-modulated radiation therapy (IMRT)—a
noninvasive procedure pinpoints delivery of radiation therapy.
Unlike radiation and drug therapies, IMRT causes no fatigue,
nausea or hair loss and enables better control of radiation
to the tumor with less toxicity, preserving the surrounding
healthy tissues. More
about IMRT
- Image-guided radiation therapy (IGRT) and Image-Guided
Radiosurgery (IGRS)—uses low energy, real-time x-ray technology
to view cancer and neurological lesions as they are treated,
ensuring the most precise delivery of radiation.
- Stereotactic radiosurgery (SRS)—a computer-guided
radiation therapy system that delivers focused beams of radiation
directly into a tumor; little radiation affects surrounding
healthy tissues.
- Stereotactic body radiosurgery—similar to SRS
but is used when a larger area outside of the skull needs to
be treated.
- Intensity-modulated radiosurgery (IMRS)—for cancer
and neurosurgical treatment
- Conformal arc therapy—allows radiation beams to
be continuously shaped to conform to the shape of targeted tumor.
- Electron therapy—a technique that changes the
energy of electrons to treat both superficial lesions, like
skin cancer, and deeper lesions, like breast cancer.
- Gated radiotherapy—a noninvasive procedure typically
used to treat cancers in the lung and upper abdomen.
Trilogy can treat: many
types of cancer 
Photo courtesy of Varian Medical
Systems, Inc., of Palo Alto, Calif. Copyright 2005, Varian Medical
Systems, Inc. All rights reserved.
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