Radiation Oncology at Celilo Cancer Center
Radiation oncology is the medical use of ionizing radiation as part of
cancer treatment to control malignant cells. To spare normal tissues,
shaped radiation beams are aimed from several angles to intersect at the
tumor, providing a much larger dose there than in the surrounding, healthy tissue.
Celilo Cancer Center employs the most advanced radiation therapy technology
available, intensity modulated radiation therapy (IMRT). Our Elekta Synergy
linear accelerator combines CT scanning with IMRT to help Celilo’s
radiation specialists even more precisely and effectively deliver the
advanced IMRT technology.
The Synergy linear accelerator’s CT technology provides “3-D
image-guided” (IGRT) capabilities that enable higher doses of radiation
to be delivered more precisely to cancer tumors. This increases the daily
accuracy of treatment and reduces the effect on surrounding tissue. IGRT
allows staff to more efficiently and effectively adjust for the body and
organ movements that can occur during treatment
For many women diagnosed with breast cancer, radiation therapy is an effective,
and far less physically and emotionally taxing, alternative to mastectomy.
Several studies have shown that treatment combining tumor removal with
external radiation therapy has produced the same cure rate as total breast removal.
Yet, despite the obvious advantages of radiation treatment, many women
still choose to have mastectomies – often because of the long treatment
regimen required for external radiation treatment.
At Celilo, however, breast cancer patients may benefit from a procedure
called brachytherapy, which dramatically shortens the radiation therapy
process to only five days, compared with the six weeks required for external
radiation therapy. The procedure enables radiation specialists to deliver
higher doses of radiation to very defined areas of the breast without
affecting surrounding tissue.
Meet Keith Stelzer, MD, PhD
Dr. Keith Stelzer is a leading expert in the application of intensity modulated
radiation therapy (IMRT) the technology used at Celilo that shapes radiation
beams more precisely to spare surrounding tissue.
Dr. Stelzer graduated from the University of California Davis in 1981.
He received his Ph.D. in toxicology from the University of Kansas Medical
Center in 1985 and his medical degree from the University of California,
Los Angeles, in 1989. Dr. Stelzer completed an internal medicine internship
at St. Vincent Hospital in Portland and a radiation oncology residency
at the University of Washington in Seattle, where he was chief resident
from 1992 to 1993.
Dr. Stelzer was associate professor in the Radiation Oncology and Neurological
Surgery departments at the University of Washington, and he continues
as a clinical associate professor of Radiation Oncology at UW Medical Center.
Board certified by the American Board of Radiology (Therapeutic), Dr. Stelzer
also is a member of the American Radium Society, the American Society
for Therapeutic Radiology and Oncology, and the North American Society
For more information about Celilo Radiation Oncology please call (541) 296-7204.