Question 1

What is CyberKnife?

Accepted Answer

CyberKnife is an advanced, noninvasive form of stereotactic radiosurgery that uses a robotic arm and real-time imaging to deliver highly focused, high-dose radiation to tumors anywhere in the body while minimizing exposure to surrounding healthy tissue. (Source: NYU Langone patient education).

Question 2

What types of conditions does NYCyberKnife at Perlmutter Cancer Center treat?

Accepted Answer

NYCyberKnife treats a variety of cancers including prostate, breast, lung, brain and spinal tumors, hepatobiliary malignancies, certain gynecologic cancers, and other soft tissue tumors — offering stereotactic body radiotherapy (SBRT) and radiosurgery options when appropriate. (Source: NYU Langone CyberKnife Center and Radiation Therapy pages).

Question 3

How many treatment sessions are typical and how long is each session?

Accepted Answer

Most CyberKnife courses are delivered in five sessions or fewer; individual treatment sessions commonly last about 20–30 minutes. Some protocols (in select patients) may use a single fraction. (Source: NYU Langone CyberKnife Center and NYU Langone news about S7 model).

Question 4

Is CyberKnife invasive or painful?

Accepted Answer

No — CyberKnife treatment is noninvasive (no incisions) and patients do not usually require anesthesia. Treatments are typically pain-free and most people can resume normal activities after each session. (Source: NYU Langone CyberKnife Center).

Question 5

Will I need implants/markers or a rectal spacer for prostate CyberKnife treatment?

Accepted Answer

For prostate SBRT/CyberKnife, physicians may place small fiducial markers to track the prostate during treatment, and may use a rectal spacer (SpaceOAR) to reduce radiation exposure to the rectum, depending on the patient and treatment plan. (Source: NYU Langone Radiation Therapy for Prostate Cancer).

Question 6

What should I expect during a CyberKnife treatment course?

Accepted Answer

Before treatment you will have imaging scans (CT/MRI/PET) for planning; a custom mask or body mold may be made to minimize movement. During each session the robotic arm moves around you while image-guided X-rays verify positioning so highly precise beams target the tumor; side effects are typically minimal. (Source: NYU Langone CyberKnife Center).

NYCyberKnife at Perlmutter Cancer Center—Manhattan

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