GenesisCare’s first MR-linac

Introducing GenesisCare’s first MR-linac in the US

Technology that targets moving tumors

An MR-linac is an advanced radiation therapy technology that combines high-resolution magnetic resonance imaging (MRI) scanning techniques with extremely powerful radiation therapy beams to treat tumors more accurately and quicker than conventional radiation therapy.1

MRI-guided radiation therapy should be considered as a treatment option for tumors near other major organs where limiting damage to healthy tissue is critical or in organs that move a lot, for example, due to breathing. This makes it suitable for: 

Discover MRIdian®

Watch Dr. Rodney Ellis, National Medical Director of MR-Linac, explain this game-changing technology.

The benefits of MRIdian®

Accurate targeting

  • Daily customization of the radiation plan to ensure precise radiation coverage of the tumor volume and restriction of radiation dose to normal tissues based on the ability to MR image each day prior to treatment delivery2
  • Enables treatment of complex disease and anatomy which is readily MR-imaged and targeted (e.g. pancreas, lung, liver, brain) which is not possible on other platforms2-4
  • 1.5T Mulitplanar MR Imaging (Diagnostic Quality) facilitates treatment adaption and complex disease management (including tumor tracking)5
  • 7 Mv treatment energy facilitates treatment of deep tumors
  • 20cm x 22cm treatment aperture facilitates treatment of all tumors ranging from small to large

Greater control and precision

  • The MRIdian® MR linac has automated beam control, so if the tumor moves slightly, the treatment will automatically pause until it comes back into position6-8
  • Management of motion via direct visualization of the tumor in 4D to ensure accurate delivery of the radiation during respiration and peristalsis6-8

Reduced side effects

  • The MRIdian®'s increased accuracy means the radiation beam is less likely to damage healthy tissue than conventional radiation therapy2

Fewer treatments

  • With conventional radiation therapy, a patient may need up to 37 treatments. But with the MRIdian®, the radiation is much more focused, and treatment may be delivered in as few as five treatments3,8
  • Its precision at targeting small tumors makes the MRIdian® useful where cancer has spread to other regions of thebody and for the reirradiation of areas that have already received radiation therapy in the past9,10
  • Treatment time on couch is around 20 to 30 mins
  • Patient capacity per day is about 16 to 20 patients

Overall survival

  • Highly targeted radiation plans with smallest exposure margins across any radiation treatment platform linked to overall survival increases in key cancers3


  1. Cuccia F, et al. Radiat Oncol 2021; 16:183.
  2. Godley A, et al. J Appl Clin Med Phys 2019; 20(6):7-11.
  3. Rudra S, et al. Cancer Med 2019; 8(5):2123-2132.
  4. Wen N et al. Radiother Oncol 2018; 127(3):460-466.
  5. Srinivasan S, et al. JCO Glob Oncol 2022; 8:e2100366.
  6. Li D, et al. Cancer Biol Med 2014; 11(4):217-235.
  7. Hammel P, et al. JAMA 2016; 315:1844-1853.
  8. Chuong, M et al. Radiother Oncol 2021; Vol 161, Suppl 1.
  9. Mantel F, et al. Radiat Oncol 2013; 5;8:7.
  10. Michalet M, et al. Cancers (Basel) 2022; 14(8):1943.
GenesisCare’s first MR-linac