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Therapeutic Modalities

Stereotactic radiosurgery A non-surgical technique using highly focused beams to treat relatively small lesions at locations not adjacent to highly sensitive normal tissues.  Generally 1-3 large fractions are admininistered over a 1 week period.  A positioning device is used to keep the patient stationary which minimizes radiation damage to healthy brain tissue.  Radiosurgery is an alternative to invasive surgery. SRS is useful for some brain tumors and osteosarcomas.

Intensity Modulated Radiosurgery Allows for radiation to be administered through shapable leaves which allow the dose to be sculpted around important normal tissue structures. Dose to the tumor can be increased and dose to normal tissues decreased.

Intensity Modulated Radiation Therapy -- The intensity of each beam is controlled through shapable leaves, allowing the dose to be sculpted around important normal structures and the shape of the beam changes during treatment. Valuable for treating geometrically complex tumors such as nasal tumors, spinal cord tumors, bladder tumors, prostate and perineal tumors. This allows the radiation dose to be controlled to spare normal tissues as the beam bends around normal structures.

Image-Guided Radiation Theapy Accounts for the variability in tumor location within the body between treatments.  Initial treatment planning images are compared to current images taken in the treatment room to see if the patients positioning must be adjusted.

Three Dimensional Conformal Radiation Therapy Uses CT-based techniques to generate 3D images of internal structures.  The volumes are used to shape radiation beams to spare normal tissue. State of the art for many types of tumors.

 
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Updated: May 12, 2008