Radiation Oncology Center
Washington Radiation Oncology Center (ROC)
39101 Civic Center Drive; Fremont
Hours: M-F, 8 a.m. - 4:30 p.m
The Washington Radiation Oncology Center (ROC) is part of our cancer care
affiliation with UCSF. Local residents are able to received academic-level
care without traveling across the bay. The center maintains a caring and
compassionate atmosphere, utilizing state-of-the art technology—including
the new linear accelerator—while benefiting from cancer research
done at UCSF.
The linear accelerator uses sophisticated imaging to conform to a tumor’s
shape and destroy cancer cells while sparing surrounding healthy tissue.
It features several built-in safety measures to ensure that it will deliver
the precise dosage.
According to the ROC medical director, Dr. Emi Yoshida, “Our new
linear accelerator offers a broad range of treatment techniques that have
incredibly high degrees of precision, accuracy, and speed. This means
patients will spend less time on the treatment table every day. Our new
system also has more advanced imaging capabilities that enable us to make
fine-tuned adjustments on a daily basis.”
Technical resources include:
Varian linear accelerator delivering multi-energy photon and electron therapy.
The accelerator is equipped with a 120-leaf multileaf collimator with
the capability of 3-D conformal radiation therapy, intensity-modulated
radiation therapy (IMRT) and image-guided radiation therapy (IGRT).
Click here to learn more about IGRT.
- GE Lightspeed Plus CT
- Philips Pinnacle Treatment Planning System
These resources allow the ROC to develop treatment plans based on three-dimensional
images of the tumor and surrounding tissue. A dose of radiation can then
be prescribed and delivered with multidirectional beams that not only
improve the accuracy and effectiveness of the treatment but also limit
the dose and minimize injury to the surrounding tissues.
Our multidisciplinary team of healthcare professionals are highly committed
to maintaining a quality, state-of-the-art cancer treatment facility.
Our experienced staff at the center includes three board-certified radiation
oncologists, three licensed radiation therapists, a medical physicist,
a licensed dosimetrist, licensed nurse navigator (RN) and a manager.
Meet Our Physicians
Emi Yoshida, MD
Dr. Yoshida earned her medical degree from the University of California,
Davis, and completed her residency at Cedars-Sinai in Los Angeles, CA.
She is an assistant professor in the Department of Radiation Oncology
at UCSF and is on the faculty at UCSF Health, while also treating patients
at the Washington Radiation Oncology Center.
Nicolas Prionas, MD, Ph.D.
Dr. Prionas earned both a bachelor’s degree in biomedical computation
and a master’s degree in biomechanical engineering from Stanford’s
School of Engineering. He then enrolled in an eight-year “dual-doctorate
program” at the University of California, Davis, in which he earned
both his Ph.D. from the School of Engineering and his MD from the School
of Medicine. Dr. Prionas completed his Radiation Oncology Residency training
at Stanford University.
Jesse Alexander, MD, Ph.D.
Dr. Alexander earned a Ph.D. in biology at the Massachusetts Institute
of Technology and his medical degree from the Duke University School of
Medicine. He completed his residency in radiation oncology at the University
of California, San Francisco.
One Minute With Dr. Emi Yoshida
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Washington Hospital is a designated Radiation Oncology Center of Excellence
by the American College of Radiology (ACR). By awarding facilities the
status of a Radiation Oncology Center of Excellence, the ARC recognizes
a facility that has gone through a comprehensive review process overseen
by board-certified, expert radiation oncologists and medical physicists.