What is proton therapy?

Proton therapy for prostate cancer is a non-invasive treatment option that involves using a focused ray of proton particles to destroy cancerous tumors. The treatment is capable of delivering precise, high doses of radiation to accurately target cancer cells without causing significant damage to healthy tissue surrounding the prostate. With proton therapy, there are usually minimal to no side effects and generally patients have excellent disease-free survival rates.

Watch a video, "What is Proton Therapy?"

The Difference Between Proton Radiation and Standard X-ray Radiation

There is a significant difference between standard photon (X-ray) radiation treatment and proton therapy. X-ray radiation can damage healthy tissues because the physician is unable to adequately conform the irradiation pattern to the cancer. As a result, healthy tissue and organs near the prostate may receive excess radiation which can cause damage and produce side effects.

The power of protons is that higher doses of radiation can be used to control and manage cancer while significantly reducing damage to healthy tissue and vital organs. With protons, doctors can direct the radiation to the tumor with pinpoint accuracy. This means less damage to surrounding healthy organs and tissue, and the ability to deliver a higher dose of radiation to the tumor.

How is proton therapy administered?

It may vary somewhat by proton treatment center, but usually there is a pre-treatment consult. An image of the prostate is produced by a CT scan. Some centers implant two or three gold fiducials (seeds). An immobilization device is fitted to the patient during the consult, and focusing devices may be custom built to help direct the beam to the precise target.

Again, it varies by proton treatment center, but typically during treatment the proton beam is focused on the prostate gland plus a small margin around the gland. Treating this extra margin helps to kill any cancer that may have escaped the gland. This margin of safety may include part of the rectum, which is adjacent to the prostate. At most proton centers, in order to protect the anterior(inside) wall of the rectum from radiation, a small, lubricated balloon is inserted into the rectum and inflated with a small amount of water prior to each treatment. A secondary function of the balloon is to help immobilize the prostate.

An individual proton treatment session lasts about 15-20 minutes and is administered five days per week for about 8 ½ weeks (unless you qualify for the shortened treatment protocol which can be done in roughly half this time). Treatments can be done early in the morning so that the patient has the rest of the day to himself to do whatever he wants. Since treatment is painless, the patient should feel fine to exercise, walk, hike, shop, etc…

The History of Proton Therapy

Proton therapy has been around for nearly 60 years; tens of thousands of patients have been treated - mostly prostate cancer patients; it is FDA approved, reimbursed by Medicare and about 150 private insurers. Reputable medical centers in the U.S. and around the world have embraced the technology and have built, or are building proton centers. The first proposal to use high-energy protons for medical treatment was in 1946. About 10 years later, proton treatment began for patients with certain cancers. All these early treatments were done in physics laboratories. Research and laboratory applications increased rapidly over the next 30 years. However, it was not until the James M. Slater, MD Proton Therapy and Research Center at Loma Linda University Cancer Center (LLUCC) became operational that the full benefits of proton therapy were available to cancer patients of all types.

Built by U.S. Department of Energy’s Fermi National Accelerator Laboratory (Fermilab) physicists and engineers, LLUCC’s accelerator is the world's smallest variable-energy proton synchrotron. Its design delivers a beam of energy sufficient to reach the deepest tumors in patients. Proton radiation treatment is notably valuable for treating localized, isolated, solid tumors that may spread to other areas of the body.

Questions about proton therapy? Just ask.

"I have not spent one dollar on medicines or follow-up procedures in my 20 years post-proton treatment."
- Wayne Swartz, BOB Member
"You owe it to yourself and to those who love you to safeguard your quality of life. Surgery will not do that ... proton therapy can."
- Jeannie Chase, Spouse
- Warren Johns, BOB member
"15 years have passed since exposure to the penetrating power of the proton and the superb medical skills of the 'beam team.'”
"The procedure was a breeze. It has been 10 years and I feel GREAT.”
- Tom Wright, BOB member
"As long as I live, I will do everything I can to spread the word about proton treatment.”
- Jim Tuggey, BOB member
"I am celebrating 8 years post-treatment with no recurrence, no side effects, and not one more penny for medications."
Robert T. Gore, M.D. F.A.C.O.G.


The Purcell's fairy tale life came to a halt when the doctor diagnosed Pat with prostate cancer. 

Little did they know that 25 years earlier, a doctor 1,200 miles away risked his entire career to pioneer proton treatment with virtually no side effects. “Against All Odds” follows a couple’s desire to fight cancer and unveils the historical account of a doctor’s passion to discover a better treatment option.

Watch the video.

Questions? Ask us anything.

Proton Therapy Advantages:

· Less damage to healthy tissue
· Non-invasive, painless

· Outpatient setting
· No recovery time
· Lower chance of recurrence
· Few, if any, side effects

Want to talk to former proton patients? Just ask.

You Can Beat Prostate Cancer — NEW Edition Available

Written by former proton therapy patient and BOB founder, Robert Marckini

Buy it on Amazon.