Cyberknife Radiosurgery Specialist

David Newell, MD

Cerebrovascular, Spinal, and Brain Tumor Neurosurgery located in Bellevue, WA

When you need treatment for a tumor or vascular growth in your brain, CyberKnife® radiosurgery can precisely remove the growth without damaging the surrounding brain tissue. David Newell, MD specializes in radiosurgery using the CyberKnife® System, a cutting-edge device that delivers the exacting care you need. Radiosurgery is a noninvasive treatment, making it an ideal choice for inoperable brain tumors and patients who can’t undergo traditional invasive surgery. To learn more about CyberKnife radiosurgery, call Dr. Newell’s Seattle practice in Washington or book an appointment online.

Cyberknife Radiosurgery Q & A

What is radiosurgery?

Radiosurgery uses high-dose radiation to treat tumors or other abnormal growths. The radiation damages DNA, halting cellular growth and, in most cases, shrinking the tumor.

There are several types of radiosurgery devices that operate by locating the tumor then staying in a single fixed position as they deliver radiation. CyberKnife radiosurgery, on the other hand, uses a robotic system with the ability to move and adjust with you during the procedure.

How does CyberKnife radiosurgery work?

The CyberKnife system is robotized, so it bends and moves around you as you lie on the treatment table. The robotic arm frequently stops and uses real-time imaging to precisely determine the location of the tumor.

Before emitting radiation, the system automatically adjusts the beam’s focus to perfectly target the tumor. Since it constantly recalculates, it can adjust to any slight movement you may make.  

The robotic CyberKnife directs beams of radiation into the tumor or growth from many angles as it moves around your head, each time sending out hundreds of beams focused on one pinpointed location.

The machine fine-tunes the beams to match the shape of your tumor, protecting the surrounding tissue from damage. The individual beams don’t harm your skin, but when they converge on the tumor, they combine to produce a high dose of radiation.

What conditions are treated with CyberKnife radiosurgery?

Dr. Newell uses the CyberKnife System to treat cancerous and noncancerous conditions in the brain and spine as well as some vascular conditions. Conditions treated with CyberKnife radiosurgery include:

  • Arteriovenous malformations
  • Meningiomas
  • Trigeminal neuralgia
  • Brain tumors
  • Spine tumors
  • Cavernous angiomas
  • Pituitary adenomas
  • Metastatic tumors that originated elsewhere in your body

Following radiosurgery, it can take several months to years for the treated cells to shrink, depending on your condition. For some tumors, the goal is to halt further growth, so even if the tumor doesn’t shrink, the procedure is considered successful.

How many CyberKnife radiosurgery treatments will I need?

CyberKnife radiosurgery is pain-free and doesn’t require local anesthesia or sedation, and the CyberKnife System offers treatment flexibility.

Dr. Newell can deliver a high dose of radiation in one session or spread your treatment over 2-5 sessions for larger tumors or growths. By comparison, other radiosurgery systems are limited to one session and can only treat smaller tumors.

If you’ve been diagnosed with brain cancer or a noncancerous growth in your brain or spine, call David Newell, MD or book an appointment online.