Non-invasive Treatment Option. More Precise. Greater Accuracy. Fewer Side Effects.

The clinical team at the Riverside Community Hospital’s Cancer Center is proud to be the first and only facility in the Inland Empire to offer a state-of-the-art Stereotactic Radiosurgery System. The multi-million dollar investment in this new technology offers treatment that is faster, more precise, and with greater accuracy allowing physicians to treat those hard to reach tumors and lesions, many of which may have been diagnosed as “inoperable”.

Whether it is you or a loved one, a cancer diagnosis can be a frightening, confusing and often a life-altering event. Stereotactic Radiosurgery is a revolutionary, non-invasive treatment that offers renewed hope to cancer patients all over the world.

Radiosurgery allows our clinical team to offer the latest radiation delivery system in oncology that is completely non-invasive. Patients are no longer required to drive miles away from home to access this advanced treatment. It is now available in the Inland Empire at Riverside Community Hospital’s Cancer Center. Utilizing a multidisciplinary team approach, our oncology clinicians collaborate to evaluate all relevant treatment options allowing development of a customized treatment plan for each patient.

What is Stereotactic Radiosurgery?

Stereotactic Radiosurgery is a new non-invasive alternative for the treatment of malignant tumors located anywhere in the body. Radiosurgery delivers high doses of radiation to tumors with extreme accuracy offering renewed hope to patients with inoperable or surgically complex tumors, or for patients looking for an alternative to surgery.

The system uses image guidance technology to deliver multiple beams of high-energy radiation to tumors from virtually any direction within sub-millimeter accuracy. Stereotactic Radiosurgery tracks the tumor’s position, automatically correcting the radiation dose with movement from patient or tumor. This outpatient procedure does not require anesthesia or invasive stabilizing frames. Patients typically experience minimal recovery time returning to normal activities immediately.

Types of Cancers We Treat With Stereotactic Radiosurgery

  • Brain tumors and lesions (malignant)
  • Lung Cancer
  • Liver Cancer
  • Spine tumors and lesions
  • Head & Neck Cancer
  • Pancreas Cancer

Benefits to Patients vs. Traditional Radiology Treatment

  • Non-invasive
  • No anesthesia necessary
  • Outpatient treatment
  • Quick recovery with immediate return to normal activities
  • No rigid steel head frames
  • Scanning: Prior to treatment with the Stereotactic Radiosurgery System, the patient undergoes imaging procedures to determine the size, shape and location of the tumor. The process begins with a standard high-resolution CT Scan or, tumors, other imaging techniques such as MRI, angiography or PET, may be used.
  • Planning: Following scanning, the image data is digitally transferred to the system’s treatment planning system, allowing the clinical team to use the system’s software to generate a treatment plan providing the desired radiation dose to tumors, while minimizing damage to healthy tissue. The system’s software then generates a treatment plan to provide the desired radiation dose to the tumor, while minimizing damage to the surrounding healthy tissue. The patient does not need to be present for this step in the process.
  • Treatment: During a stereotactic radiosurgery procedure, a patient lies comfortably on the treatment table, with their position automatically adjusted. Anesthesia is not required, as the treatment generally lasts from 15 to 30 minutes and is typically completed in one to five visits.
  • Follow-Up: Follow-up imaging generally includes a CT, MRI and/or PET Scans to evaluate the tumor’s response to the delivered dose.
  1. Why would a patient want to be treated with Stereotactic Radiosurgery vs. Traditional Radiation Treatment?
    • Non-invasive: This new treatment option requires no surgery, no incisions, and no postsurgical healing.
    • Speed: Treatment is fast and precise. Treatments that once took 10 to 30 minutes can now be completed in less than two minutes. Which makes for a more comfortable treatment experience, helping patients get back to normal life quickly each treatment day. Radiosurgery can also reduce the chance of a tumor moving during treatment, which helps protect nearby healthy tissue and critical organs.
    • Accuracy. Stereotactic Radiosurgery treats tumors with pinpoint precision. Accuracy is made possible by the state-of-the-art system, which automatically synchronizes imaging, beam shaping and dose delivery. Radiosurgery performs internal accuracy checks every ten milliseconds throughout the entire treatment process.
    • Enhanced imaging. Imaging technology can produce three-dimensional images used to enhance tumor targeting in 60% less time than previous imaging systems. Images can be used to fine-tune a patient’s tumor position prior to and even during the treatment process.
    • Motion compensation. For lung and other tumors subject to respiratory motion, Stereotactic Radiosurgery offers respiratory gating and an innovative approach that makes it possible to monitor and compensate for movement of the tumor activating radiation only when the tumor is in the optimal position for treatment.
  2. Does Stereotactic Radiosurgery expose people to radioactive substances?
  3. When people hear the word “radiation,” most immediately think of radioactive substances. However, no radioactive substances are involved in the linear accelerator or Stereotactic Radiosurgery system. When the system is switched “on,” radiation is produced in the form of high-energy X-rays, or photons, which are aimed directly at cancer cells. Then, like a flashlight, when the system is switched off, the photon beam disappears.

  4. How long is a course of treatments?
  5. Generally, radiotherapy is given five days a week for two to six weeks or more. Stereotactic radiosurgery (SRS) or stereotactic body radiotherapy (SBRT) treatments are generally completed in one to five daily sessions. The course of treatment varies depending on the diagnosis, so patients should ask their radiation oncologists for more specific information.

  6. What side effects can a patient expect from Stereotactic Radiosurgery Treatments?
  7. Most patients do not experience side effects from radiosurgery treatments. However, some serious side effects can occur, including but not limited to fatigue and skin irritation. Side effects most often affect the treatment site itself but patients should ask their doctor what to expect from their specific cancer treatment.

About our Staff

The Cancer Center staff are trained to use the most effective approaches in cancer care. Our multidisciplinary team includes highly trained radiation oncologists, surgeons, radiation therapists and administrative support personnel.

Afshin Rashtian, MD

Dr. Afshin Rashtian
Medical Director of Radiation Oncology

  • H. Jhangiani, MD, Medical Oncology
  • E. Reyes, MD, Medical Oncology
  • D. Massee, MD, Radiology
  • D. Okada, MD, Pathology
  • A. Rashtian, MD. Radiation Oncology
  • G. Strother, MD, Family Medicine
  • R. Baqai, MD, Hematology/Oncology
  • B. Choi, MD, Medical Oncology
  • Dr. Gorty, Radiation Oncology
  • Lacy, MD, Surgeon
  • M. Karimi, MD, Medical Oncology
  • T. Mahdi, MD, Family Medicine/Palliative Care
  • M. Meyer, MD, Pathology
  • A. Odulate, MD, Radiology
  • D. Burke, MD, OB/GYN