What’s the Big Deal about the CyberKnife? Why only 5 Treatments?

The Superior Precision of the CyberKnife allows for Only 3-5 Treatments Most Cancers.

Simply put, CyberKnife Stereotactic Ablative Body Radiotherapy, or SABR for short, controls cancers even better than predicted.  For example, the results for patients with early stage lung cancer have been particularly striking. Studies have shown 85-90% cancer control rates with a 3-5 CyberKnife treatments versus only 30% with 30-40 ordinary radiation treatments.  This means that  85-90% of lung cancer patient treated with the CyberKnife got rid of their cancer. That is a huge increase in successful cancer treatment. More people are beating their disease with the CyberKnife than with ordinary radiation therapy.

Because of this success, a lot of research is being done to find out why it is working so well. And to learn how else SABR can be used to treat cancers and other diseases. Here are some cutting-edge facts:

CyberKnife Damages Cancer’s Blood Supply  

  1. In a recent editorial, oncologist Dr. Paul Sperduto and colleagues stated “the literature supporting this phenomenon (high-dose radiation results in indirect tumor cell death) is not fragmentary, but actually quite robust….  However, we have consistently underestimated the role of indirect cell death by devascularization and its possible role in radiation-induced immune enhancement.”  (Int. J Radiation Oncol Biol Phys. 91, No.1,pp121-13, 2015)
  2. When you cut off the blood supply to the cancer cells, they die. Decades of research shows that a few high doses of radiation will damage the blood vessels supplying the tumor. There is now active research combining Avastin, a drug that blocks blood vessel formation and SABR. Using Avastin and the Cyber Knife may double the efforts to cut off the tumor’s blood supply.

 CyberKnife Can Generate an Immune Response to Attack the Cancer

CyberKnife may help unleash your body’s own immune system to fight your cancer. Recent studies suggest that SABR cause the body to release tumor-specific antigens. These antigens are unique molecules released after radiation destruction of cancer and can generate a cancer-specific immune response.  Once again, there is now active research combining SABR, like that delivered by CyberKnife, with the recent FDA approved drugs called immune checkpoint inhibitors.

CyberKnife Tracks Your Cancer As It Moves

Much like a jet-fighter pilot who always has an enemy target in its cross-hairs, CyberKnife can track your lung cancer as it moves with each and every breath.  CyberKnife’s pencil thin beams of radiation can destroy your tumor, while sparing surrounding normal tissues.  Because of this precision, CyberKnife  uses hundreds of beams of radiation instead of 5 – 7 beams delivered with other radiation machines. With the CyberKnife you do not have to hold your breath during treatment. You just lie still and the machine does all the work for you. Each treatment typically takes a mere 25-50 minutes, with plenty of breaks if needed.

It is not just lung cancers that move. Prostate cancer, liver cancer, pancreas cancer, and many other cancers move inside the body. CyberKnife is the only radiation device that directly watches your cancer as it moves, keeping collateral damage to a minimum.

If you or a loved one has cancer, learn all the options. Discover more here. CyberKnife maybe the answer to beating your cancer. Call me to discover how I can help win your fight.

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