Magnetic Resonance Imaging-Guided Linear Accelerator(MRI-LINAC)

What is radiation therapy with MRI-LINAC?

• The Magnetic Resonance Imaging-Guided Linear Accelerator (MRI-LINAC) offers a high-quality and clear image of the targeted area at every treatment session.

• Some tumors move and change in size during the course of radiation therapy. The MRI-LINAC will allow your doctor to tailor your treatment in real-time. This lets the radiation team deliver radiation more precisely to the targeted area. It also lowers the risk of exposure to healthy surrounding tissues and organs.

• Your doctor will determine if treatment with MRI-LINAC is right for you. They will base this on the details of your tumor.

How do I prepare for radiation therapy with MRI-LINAC?

• You will have a Computed Tomography (CT) and Magnetic Resonance Simulation. This is a planning session to map out the target area for radiation treatment.

• Follow any directions we give you for the procedure.

• We will ask you MRI safety screening questions before treatment.

• Do not bring any of the following into the treatment room:
  • Electronics devices (cell phones, tablets, wireless earbuds, etc.)
  • Metals, jewelry, watches
  • Pens, paper clips, keys, and coins
  • Hair barrettes, hair pins, and lanyards
  • Any clothing with a metal zipper or snap
  • Steel toed boots or shoes

What happens during radiation treatment with MRI-LINAC?

•    This is a non-invasive procedure.

• You will change into a hospital gown.

• The treatment team will help get you set up on the treatment table.

• You must lie still for the duration of the procedure. This helps us get a clear image of the targeted treatment area.

• We will give you ear protection. This lessens the noise you will hear from the MRI-LINAC.

• We may have you take a few breaths during the procedure. This helps us locate the tumor clearly.

• Your doctor will plan your radiation based on real-time images.

How long do the MRI-LINAC treatments last?

• Treatment plans are tailored to each patient. The number of treatments needed depends on the size, type, and location of your tumor.
•     In general, radiation treatments are given 3 to 5 days a week. Each treatment can last from 45 to 90 minutes.   

What should I tell my health care provider before the procedure?

Tell your healthcare provider and the technologist if you:

• Are pregnant or could be pregnant
• Have metal implants and/or an implanted cardiac device

What happens after the MR-LINAC radiation treatments are completed?

• We will schedule a follow up appointment for you to see your Radiation Oncologist

©2022 NYU Langone Health. All rights reserved. Reviewed for health literacy. This information is not intended as a substitute for professional medical care. Always follow your health care provider's instructions.