Why Choose the CyberKnife® System

CyberKnife® Robotic Radiosurgery System treating tumors directly

Robert Louis, MD, your Orange County Neurosurgeon, specializes in CyberKnife® Robotic Radiosurgery, a non-invasive and non-surgical alternative treatment for inoperable or surgically complex cancerous and non-cancerous tumors throughout the body, such as prostate, lung, brain, spine, liver, pancreas and kidney. The treatment delivers beams of high dose radiation to tumors with pinpoint accuracy.

Advantages of CyberKnife®

    The CyberKnife System is a leading technology in a targeted type of radiation delivery called stereotactic radiosurgery (SRS) or SBRT. SRS/SBRT is widely used for treatment of brain metastases, and other benign and malignant brain tumors.
    The CyberKnife System is a frameless radiation delivery system. With other technologies, immobilization devices such as a frame bolted to the patients’ skull are used to prevent movement. The CyberKnife System is designed to automatically adjust for movement and therefore does not require a frame.
    The CyberKnife System has been proven to deliver radiation to the skull with sub-millimeter precision, (to within less than 1.0mm of the target), which means minimal radiation is delivered to the surrounding healthy brain tissue.
    In a clinical study of 133 patients, treated for tumor metastases to the brain presenting with clinical symptoms such as headaches and seizures, 90% of patients either stabilized or improved performance status following treatment with the CyberKnife System.
    In a clinical study of 333 patients using the CyberKnife System to treat tumor metastases to the brain, >85% of evaluable patients achieved local tumor control at 2 years post treatment8. That is the tumor either decreased in size or stopped growing.
    Because treatments with the CyberKnife System can be spread out over more than 1 session, it can treat patients that could not be treated with frame-based systems such as the GammaKnife.
    As compared with single session radiosurgery with the GammaKnife, treatment with the CyberKnife System can be spread out over 2-5 sessions, which may result in fewer side effects.

For more information on CyberKnife® Robotic Radiosurgery or to request an appointment with Dr. Louis, please call (949) 383-4185 or Contact Us.

1. Katz et al. Radiation Oncology 2013, 8:118. Stereotactic body radiotherapy for localized prostate cancer: disease control and quality of life at 6 years.
2. Timmerman et al. Journal of the American Medical Association. 2010;303(11):1070-1076. Sterostatic Body Radiation Therapy for Inoperable Early Stage Lung Cancer.
3. Brown et al. Clinical Oncology 2009.06.006. Application of Robotic Stereotactic Radiotherapy to Peripheral Stage I Non-small Cell Lung Cancer with Curative Intent
4. King et al. International Journal of Radiation Oncology.2013. Health-Related Quality of Life After Sterostatic Body Radiation Therapy for Localized Prostate Cancer: Results from a Multi-institutional Consortium of Prospective Trials
5. Redjournal. Abstract 2876. Chest wall and rib Irradiation of Lung Cancer Patients Treated with Robotic Radiosurgery SBRT.
6. Redjournal. Abstract 3389. Stereotactic Body Radiation Therapy for Early Stage Lung Cancer: Quantifying the Effect of Tracking Respiratory Motion on Chest Wall Dosimetry.
7. Antypas et al. Physics in Medicine and Biology.53;(2008)4697-4718. Performance Evaluation of a CyberKnife® G4 image-guided robotic stereotactic radiosurgery system.
8. Muacevic et al. Journal of Neurooncology. October 2009. Feasibility, safety and outcome of frameless image-guided robotic radiosurgery for brain metastases.
9. Colombo et al. Neurosurgery. Volume 64 Number 2 February 2009 Supplement. CyberKnife Radiosurgery for Benign Meningiomas: Short-Term Results in 199 Patients
10. Hansasuta et al. Neurosurvery. Volume 69 Number 6 December 2011. Multisession Stereotactic Radiosurgery for Vestibular Schwannomas: Single-Institution Experience with 383 Cases.
11. Customer Loyalty Data. August 2012