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Treatment with the CyberKnife® System involves a team approach in which several specialists participate. Your team may include:
Once the team is in place, the patient will begin preparation for CyberKnife treatment.
Depending on your diagnosis, you will undergo some type of imaging - which could include CT, MRI or PET scans – to help your medical team determine the exact size, shape and location of your tumor
Soft Tissue Fiducial Placement (if needed):
Tiny gold seeds (fiducials) may be implanted to mark tumors in chest, abdomen, pelvis, or soft tissue areas.
Coordinated with an interventional radiologist or surgeon.
Mask or Body Immobilizer:
Plastic mesh mask (for brain, head, or neck tumors) or foam body mold made to minimize movement.
Done painlessly at CyberKnife Center; used during imaging (CT, MRI, PET, etc.).
Imaging Types:
CT Scan:Uses x-rays for detailed cross-sectional images; 15-30 minutes, may use contrast medium.
Remove jewelry, hairpins, etc.; avoid eating/drinking for abdominal exams; inform about allergies.
MRI:Uses magnet and radio waves for high-resolution images; 15-30 minutes.
Remove metallic objects; no special prep unless instructed; avoid if you have a pacemaker.
PET/CT:Detects cellular changes with radiopharmaceutical injection; 2-hour scan.
No food/drink (except water) for 6 hours; high-protein, low-carb last meal; no caffeine/exercise 24 hours prior.
Myelography/Cisternogram:Contrast medium injected into spinal/cerebral fluid for detailed views; ~1 hour.
Avoid certain meds (e.g., aspirin) 1 week prior; no eating after midnight; drink clear liquids before.
General Prep Tips:
Follow specific instructions from CyberKnife nurse/doctor.
Remove jewelry/metallic items; wear comfortable clothing.
Inform about allergies, diabetes, or medications.
Using the imaging data, your medical team will determine the size of the area being targeted by radiation, the radiation dose, and identify critical structures – such as the spine or nearby organs – where radiation should be minimized.
The CyberKnife System then calculates the optimal radiation delivery plan, leveraging its extreme maneuverability to deliver a safe and accurate treatment.
During treatment, the CyberKnife System’s computer-controlled robot will move around your body to various locations from which it will deliver radiation. At each position, it will stop to determine precisely where the radiation should be delivered.
Nothing will be required of you during treatment, except to relax and lie as still as possible.
Treatment with the CyberKnife System is completed in four to five treatment sessions, over the course of a week.
Most patients experience minimal side effects and can quickly return to their daily routines with little interruption to their normal activities. Doctors will discuss all possible side effects prior to treatment and may prescribe medication to control any side effects, should they occur.
You also should schedule and attend any follow-up appointments.
