Like the CyberKnife S7 System that Ascension Via Christi began using last July, the Radixact System uses real-time Synchrony motion tracking to correct for tumors that move as a result of bodily processes, such as respiration and digestion, as well as for patient movement.
"The Radixact System allows us to further customize treatment to the individualized needs of each patient," said radiation oncologist David Bryant, MD, medical director for the Ascension Via Christi CyberKnife Center, the only center in Kansas with the high-tech system that is designed to deliver highly precise doses of radiation to moving tumors in just five or fewer treatments.
"Having multiple delivery systems allows us to develop a plan of care around the patient's needs rather than around the capabilities of one, possibly two technologies," Bryant said.
Synchrony, originally designed for use with the CyberKnife System, allows radiation treatment delivery to be synchronized with a moving tumor's location throughout the treatment session. It is designed to provide highly precise radiation dose delivery to tumors that move, such as lung and prostate, and smaller treatment margins around the tumor, minimizing the amount of healthy tissue exposed to high-dose radiation.
The Radixact System is equipped with a built-in CT scanner that performs daily imaging before each treatment session, allowing the treatment team to clearly see the shape and position of tumors located anywhere in the body before each treatment session. It uses image guidance during treatment delivery to automatically adapt the movement of the radiation beam in synchronization with the movement of the tumor as beams of radiation are delivered continuously throughout the treatment session.
"To effectively treat cancer with radiation therapy, we need to be able to carefully sculpt the delivery of radiation to the target, minimizing irradiation of healthy, non-cancerous surrounding tissue and organs," Bryant said. "Having access to highly precise delivery systems helps us achieve this goal, which in turn improves clinical outcomes, minimizes the risk of side effects and protects patients’ quality of life during and after treatment."
Bryant's colleague, radiation oncologist Salman Hasan, DO, agreed.
"This is an exciting addition for us as physicians because it gives our patients access to the most comprehensive, and personalized, radiation therapy options available anywhere in Kansas," Hasan said.
- Helical delivery allows treatment of a full range of diseases, including larger, more complex tumors, multiple tumors and recurrent tumors as it provides continuous 360-degree radiation dose delivery as the patient table moves. The Radixact System revolves around the patient while thousands of “beamlets” are delivered to the tumor
- An integrated CT scanner allows the treatment team to clearly see the shape and position of tumors before each treatment session.
- Unique real-time Synchrony motion tracking uses image guidance during treatment delivery to automatically adapt the movement of the radiation beam in synchronization with the movement of the tumor.
- Patients typically spend less time on the table, an important feature for patients whose pain makes it difficult to remain still and/or endure longer sessions
CyberKnife S7 System:
- Robotic stereotactic radiosurgery system that uses Synchrony real-time motion tracking to automatically adapt the movement of the -radiation beam in synchronization with the movement of the tumor.
- Its highly precise capabilities allow it to deliver larger doses of radiation therapy while limiting any exposure to surrounding healthy tissue and organs
- Patients typically require one to five treatments and experience fewer side effects.
- The most commonly used radiation therapy delivery system
- Now being used at Ascension Via Christi Cancer Center to treat breast cancer in just five treatments.