Healthcare Professionals


MRI-Guided Laser Ablation

MRI-Guided Laser Ablation Technology for Minimally Invasive Neurosurgery

Visualase® provides advanced MRI-guided laser ablation technology in thermal ablation for cranial neurosurgery.
. Laser energy is delivered to the target area using a laser applicator. As light is delivered through the laser applicator, temperatures in the target area begin to rise, destroying the unwanted tissue.7

Because Visualase procedures are guided by MRI images, the procedure can provide precise ablation. Due to the minimally invasive nature of the procedure, hospital stays have been reported to be reduced compared to open procedures.1-6,8-11


The Visualase MRI-Guided Laser Ablation System is indicated for use as a minimally invasive procedure to ablate, necrotize or coagulate soft tissue through interstitial irradiation or thermal therapy under magnetic resonance imaging (MRI) guidance for wavelengths 800nm through 1064nm in cranial neurosurgery.

Product Details

The Visualase system uses a laser to destroy unwanted soft tissue. Light energy is delivered to the target area using a small laser catheter. As the laser light is delivered, temperature in the target area rises. Real-time MRI thermographic imaging clearly maps tissue temperature changes, providing you precise control of the tissue ablation. 


Live MR thermometry lets you monitor tissue ablation in real time. With simultaneous, multiple plane monitoring and the ability to superimpose MR thermometry and thermal damage estimate maps, you can define and monitor the ablation zone, giving you the precision you need to deliver the results you expect.9-10


Visualase is the only system with easy-to-set temperature checkpoints for added confidence when ablating near critical structures. You can set checkpoints on either screen and in any plane. If temperature limits are hit, the laser immediately shuts off, preventing unwanted damage.

Visualase Catheter


The Visualase system’s mobile cart design facilitates movement between magnets and readily connects to your MRI with a standard Ethernet cable. The mobility of the system offers flexibility when starting your laser ablation program and is designed for easy upgrades.

Visualase Mobile Cart System

The Visualase cart-based system provides flexibility and mobility.


The Visualase system supports a workflow that addresses the unique challenges of performing a procedure within the MRI bore.

  • Create the Plan: Using stereotactic planning software, you plan the surgical approach, taking into account ablation coverage and catheter placement.

  • Place the Laser: Insert the small, flexible laser catheter in the target area. Visualase workflow is compatible with many stereotactic platforms so you and your team can follow a workflow that's already familiar.

  • Transport the Patient to MRI: The patient is moved to MRI in radiology or an intraoperative MRI is brought to the patient.

  • Perform the MRI-Guided Laser Ablation: Start with a pre-ablation scan. Then select the preferred thermal imaging planes, identify temperature check points, and start the ablation. As the target tissue heats up, Visualase software displays the thermal damage progress.

  • Close: Remove the laser applicator. The small incision can usually be closed with a single suture.1,2 The patient is moved to recovery and in many cases can return home the next day.3-8

Jethwa, et al. J Neurosurg Peds 2011; 8:468


Torres-Reveron, et al. J Neurooncol 2013; 113:495


Jethwa et al. Neurosurg 2012; 71(ONS Suppl 1):ons133-ons145


Kang et al. Epilepsia 2015; doi:10.1111/epi.13284


Lewis et al. Epilepsia 2015; doi:10.1111/epi.13106


Patel et al. J Neurosurg 2016; doi: 10.3171/2015.7.JNS15244


Wilfong and Curry Epilepsia 2013; 54(9):10


Willie et al. Neurosurg 2014; 74(6): 569-584


Graham et al. Mag Reson Med 1999; 41:321


Sherar et al. Phys Med Biol 2000; 45:3563


Fabiano and Alberico World Neurosurg 2014; 10:34


Carpentier et al. Lasers Surg Med 2011; 43:943

View a graphic of a Class 3b and 4 laser product warning.