Which statements about CyberKnife radiation therapy are true?

• A. CyberKnife is treatment given using a miniaturized photon linear accelerator.
• B. CyberKnife is treatment given using cobalt energy.
• C. CyberKnife is a type of specialized scalpel used during brain surgery.
• D. a and b

Answer: (D)

CyberKnife is a robotic radiosurgery system that delivers precise radiotherapy using a miniaturized photon linear accelerator mounted on a robotic arm. This means it generates high-energy photon beams from a linear accelerator, not from a radioactive cobalt source. It is not a surgical scalpel or a tool used in brain surgery. So, the true statement is that CyberKnife uses a miniaturized photon linear accelerator. The claim that it uses cobalt energy is incorrect, and the idea that it’s a specialized scalpel is also incorrect. Therefore, the combination of a and b would be false because cobalt energy is not used.