Senior man on his mountain bike outdoors in forest on a lovely summer day, staying active

CyberKnife® : treating prostate cancer in 5 vs. 40 treatments.

CyberKnife® radiation treatment is unlike conventional prostate radiation therapy.

Unlike conventional prostate radiation therapy that can take up to 40 sessions to treat prostate cancer, CyberKnife® is complete after only five treatments. With CyberKnife, we destroy tumors using highly precise, targeted radiation, with minimal damage to surrounding healthy tissue. Our multidisciplinary prostate cancer team at MedStar Georgetown University Hospital in Washington, D.C. includes recognized leaders in urology, robotic surgery, CyberKnife radiation medicine, and oncology.

Frequently asked questions about CyberKnife for prostate cancer.

  • What are the benefits of CyberKnife treatment for prostate cancer?

    Not only can CyberKnife target tumors that were previously considered unreachable or inoperable, the sophisticated system is a great advancement in patient ease and comfort, offering the following advantages:

    • Minimal pain: Because the procedure is a nonsurgical approach, there is no anesthesia, incision, blood loss or recovery time.
    • Only five treatments: Not the 40 needed with other forms of radiation therapy.
    • No overnight hospitalization: An outpatient treatment, CyberKnife usually allows you to return home the same day.
    • Faster and more accurate: Approaching its target from more than 1,400 angles, CyberKnife can deliver high doses of radiation to tumors while avoiding surrounding, healthy tissue.
    • Quick recovery times: Get back to your normal life almost immediately, unlike the two-to-four-week recovery period that can be expected following traditional prostate surgery, such as prostatectomy (prostate removal).
    S3:E8 CyberKnife® Radiation Treatment for Prostate Cancer
    Sean Collins

    CyberKnife®, also known as stereotactic body radiation therapy (SBRT), is non-surgical, highly precise, targeted radiation, with minimal damage to surrounding healthy tissue. Unlike conventional prostate radiation therapy that can take up to 40 sessions, CyberKnife treats prostate cancer in only five treatments. This treatment is extremely accurate and painless. This treatment causes minimal side effects and requires virtually no recovery time. Listen to Dr. Sean Collins, radiation oncologist and director, CyberKnife Prostate Program, MedStar Georgetown University Hospital, discuss the benefits of using CyberKnife to treat prostate cancer, how it compares to traditional radiation treatment, and why patients should choose MedStar Georgetown for their CyberKnife prostate cancer treatment. For more information, visit medstarhealth.org/cyberknifenow.

    For interviews with Dr. Collins, or for more information about this podcast, contact Matt Holzapfel, matthew.m.holzapfel@medstar.net.

  • How does CyberKnife work?

    The non-surgical CyberKnife® Robotic Radiosurgery System destroys tumors using highly precise, targeted radiation, with minimal damage to surrounding healthy tissue. Unlike conventional prostate radiation therapy that can take up to 40 sessions, CyberKnife, also known as stereotactic body radiation therapy (SBRT), is complete after only five treatments.

    CyberKnife uses a combination of robotics, image guidance systems and computers to deliver highly concentrated doses of radiation to the prostate while protecting surrounding healthy tissue. CyberKnife is the only stereotactic robotic radiosurgery system on the market that adjusts for patient or tumor movement during treatment (intrafraction motion), making it especially suitable for the prostate and convenient for you.

    • CyberKnife treatment begins with the implantation in the prostate of four tiny gold fiducials that act as markers or targets for the system’s missile-like rays.
    • Afterward, a team of experienced physicians uses MRIs, CT scans and three-dimensional technology to pinpoint the location of your cancer and adjacent critical structures to create a treatment plan.
    • A week or two later, you will return for five days of therapy over one to two weeks, with each treatment lasting about 30 minutes.
    • You are usually able to resume your normal activities almost immediately.
    • Follow-up consists of regularly scheduled PSA (prostate-specific antigen) tests and monitoring
    play button
  • Does CyberKnife treatment result in positive outcomes?

    Recent research has proven that higher doses of radiation decrease the chance of prostate cancer recurring. CyberKnife’s laser-like accuracy can deliver those highly concentrated doses while avoiding nearby healthy tissue, including such critical structures as the bladder and rectum leading to fewer side effects.

    Other studies—including national, multi-institutional protocols, many conducted at MedStar Health—indicate that CyberKnife is as effective as other radiation therapies for treating low-and intermediate-risk prostate cancer patients. Another study shows that CyberKnife produces quality-of-life outcomes equivalent to or better than IMRT or seed therapy. As an added benefit, CyberKnife treatment is completed within only five visits.

To request a consultation, call

202-444-4639

or submit a request online

Request a Consultation

CyberKnife patient, David Viglione didn't let prostate cancer treatment slow him down.

play button

Click the image above to watch our TV commercial.

Why does David Viglione of Leesburg, Virginia, call himself “the poster child” of CyberKnife® therapy? Credit the long-term success of his CyberKnife treatment for prostate cancer—a decade later he is still cancer free. When he was first diagnosed, David was working full-time; and living an active life filled with travel, racquetball, golf, and quality time with his family. Fast forward to today, and David is still enjoying that same vibrant lifestyle.

“When I found out I had prostate cancer, I decided my best course of action was to get smarter before making a decision,” David says. He discovered that there were several good options to address the cancer, but he was concerned about their potential long-term side effects, and how that would impact his active lifestyle. Then, after meeting with Sean Collins, MD, PhD, the director of the CyberKnife Prostate program at MedStar Georgetown University Hospital, David felt hopeful.


Read more

We're a leader in innovative and compassionate patient care.

MedStar Georgetown University Hospital—the first hospital on the East Coast to offer the CyberKnife technology—is among the world’s most experienced CyberKnife sites having treated more than 2,000 patients with prostate cancer.

Together, they assure that every patient is evaluated for the most appropriate treatment plan and cared for as an individual.

Through our research engine, Georgetown University’s Lombardi Comprehensive Cancer Center, the only National Cancer Institute (NCI)-designated comprehensive cancer center in the Washington, D.C., region, we offer access to clinical trials and the latest breakthroughs in cancer care.

Location icon
The first hospital on the East Coast to offer the CyberKnife technology.
Person icon
Among the world's most experienced CyberKnife sites having treated more than 2,000 patients with prostate cancer.
group of people icon
Our experts have administered more than 30,000 CyberKnife treatments.

Living with vigor after CyberKnife® prostate cancer treatment.

play button

Click the image above to hear about Tony Englert's story.

“Mr. Englert, you have cancer.” In 2015, Tony Englert was stunned to hear “the words you don’t expect to hear in your lifetime.” After all, Tony was 67, healthy, an avid runner and golfer, and still managing a high-profile executive career. Most important, Tony had not experienced any prostate cancer symptoms, such as urinary retention or bone pain.

Many men with prostate cancer never notice symptoms at all. For Tony, the red flags were slightly elevated PSA (prostate-specific antigen) levels detected over a few years during his routine annual physicals. Tony underwent a biopsy at MedStar Georgetown University Hospital, and it confirmed intermediate-grade cancer. Upon receiving the news, Tony decided he “didn’t want to sit around the house that day.” So, he went to the gym. “It took me two days to say that I had CANCER,” he says.


Read more

To request a consultation, call

202-444-4639

or submit a request online

Request a Consultation

Are you a candidate for CyberKnife treatment?


Most people are candidates for CyberKnife, but it is an especially good option if any of these apply to you:
  • Have early-stage, localized tumors (i.e., confined to the prostate).
  • Have a lesion or tumor that is untreatable by surgery or other radiation modalities.
  • Have previously undergone radiation treatments.
  • Are elderly or otherwise in compromised health.
  • Have inflammatory bowel disease, irritable bowel syndrome or colitis.
  • Are on blood thinners.

Each treatment lasts about an hour. Patients are usually able to resume their normal activities almost immediately after each session. Follow-up consists of regularly scheduled PSA (prostate-specific antigen) tests and monitoring.

If CyberKnife treatment is not right for you, all available radiation therapies, including proton therapy, are offered here at MedStar Georgetown.

Cancer free after only five CyberKnife® treatments versus the 40 needed with traditional radiation.

Don Besom of Bethesda, Maryland, starts every morning working out or canoeing with his wife of 67 years, Katherine. This regimen would be impressive for a person of any age, but Don is 87—and a prostate cancer survivor, thanks to his CyberKnife® treatments at MedStar Georgetown University Hospital . The procedure allowed Don to quickly resume his active lifestyle after receiving only five treatments, versus the 40 required with conventional radiation.

To request a consultation, call

202-444-4639

or submit a request online

Request a Consultation

Meet our prostate cancer team. 

Gaurav Bandi, MD
Urologist

Sean P. Collins, MD, PhD
Radiation Medicine

Nancy Dawson, MD
Hematology/Oncology

Ryan Hankins, MD
Urologist

Keith Kowalczyk, MD
Urologist

Paul Denis Leger, MD, MPH
Genitourinary Medical Oncology

Located in Washington D.C.

MedStar Georgetown University Hospital

3800 Reservoir Rd., NW
Washington DC, 20007

Hours of operation: Monday through Friday, from 8:30 a.m. to 4:30 p.m.


Get Directions

To request a consultation, call

202-444-4639

or submit a request online

Request a Consultation