No Gating or Breath Holding with CyberKnife - Phoenix, AZ

No Respiratory Gating or Breath-Holding with CyberKnife Treatment

Tumors in multiple areas of the body can move even a couple of inches just from breathing and the normal internal motions of the body’s organs and fluids. This presents a problem when treating these tumors with radiation since movement can cause damage to the surrounding healthy tissue.

To minimize the risk of damage, different techniques are used in traditional radiation therapy. These techniques are:


  • Respiratory Gating: This technique involves the use of software and imaging technology to monitor the tumor’s movement and attempt to predict the breathing patterns of the patient. This technique is meant to help the radiation oncologist synchronize delivery of the radiation to prevent damage to surrounding tissue. However, any sudden movements, such as a cough or an itch, require treatment to be stopped.


  • Breath Holding: This is a simple technique used to block air flow for short intervals. Patients are required to hold their breath for 2030 seconds, which can present problems for patients who have a hard time holding their breath. Holding your breath for repeated intervals can also be difficult. Human error always plays a role, and the accuracy of the breath-holding technique is not guaranteed.


  • Abdominal Compression: This technique uses an external abdominal compress to attempt to minimize tumor movement during treatment. This device can be uncomfortable for patients and can cause anxiety for many. The compression equipment uses a pressure plate just under the rib cage that is controlled by a scaled screw to apply different amounts of pressure.


These techniques serve their purpose and can be effective for some patients. However, they do present problems for certain patients such as the elderly, the young, and those with anxiety or other health concerns. These techniques can also be uncomfortable.


CyberKnife: The Non-Invasive Solution


The CyberKnife System

The CyberKnife System offers another option for radiation therapy that can adapt to patient and tumor movement without gating and breath-holding techniques. This treatment is noninvasive and uses advanced robotic technology to deliver highly-focused beams of radiation from many different angles.

CyberKnife is the only radiation system that can track the movement of tumors during treatment to minimize exposure to surrounding healthy tissues and organs. The highly advanced software uses image guidance to follow movement and verify the correct target before delivering the beam of radiation.

The CyberKnife system was originally developed to treat brain tumors. The treatment can be used as a standalone treatment or in tandem with other cancer treatment options, such as chemotherapy. The FDA-approved CyberKnife for the treatment of multiple cancerous and noncancerous tumors in 2001. Some of the cancers and tumors CyberKnife can treat include:


  • Lung Cancer
  • Liver Cancer
  • Breast Cancer
  • Prostate Cancer
  • Head and Neck Tumors
  • Pancreatic Cancer
  • Metastatic Cancers/ Lesions
  • Spinal Tumors


If you live in Phoenix and are seeking cancer treatment contact us at Phoenix CyberKnife & Radiation Oncology Center to learn more about the most advanced radiation treatment option. We have many board-certified oncologists who are ready to work with you to find the perfect plan for treatment.



Our top priority is the health and safety of our patients. Treatments will continue as our staff is taking extra precautionary measures to ensure the safety of all patients. We are working closely with local and national health authorities to stay informed on all important developments.

Contact our office prior to your appointment.

Phoenix Cyberknife Radiation Oncology is dedicated to the health and safety of our employees, patients, and their families. With the recent spread of COVID-19 and the height of cold and flu season, it is important to be mindful of not only yourself but others around you as well. These viruses are spread from person to person through coughing, sneezing, contact with contaminated surfaces and close personal contact. If you are experiencing any of the following symptoms: runny nose, dry cough, low-grade fevers or shortness of breath; please contact our office prior to your appointment for further instruction

Click here for more information for the Arizona Department of Health Services.