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Evidence to Improve Care

Magnetic Resonance-Guided Focused Ultrasound Neurosurgery for Treatment-Refractory Obsessive-Compulsive Disorder

Draft Recommendation

  • Ontario Health, based on guidance from the Ontario Health Technology Advisory Committee, recommends against publicly funding magnetic resonance-guided focused ultrasound (MRgFUS) neurosurgery for people with treatment-refractory obsessive–compulsive disorder (OCD)

Read the draft recommendation report

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The public feedback period for this topic has ended. All comments will be considered before a final recommendation is made and posted here. Use the tabs below to learn more about this topic and download supporting draft documents, including the full assessment report.


Obsessive–compulsive disorder (OCD) is a mental illness characterized by obsessions (recurring intrusive thoughts or images that cause anxiety) and/or compulsions (repetitive behavioural or mental rituals done in response to obsessions). For people living with OCD, the symptoms are very distressing and can take up many hours of the day, especially with severe OCD, which can prevent them from working or even caring for themselves.

Specialized therapy or medications can improve the symptoms of OCD. However, some people with OCD try many different types and combinations of these treatments with no meaningful improvement; this is considered treatment-refractory OCD. Neurosurgery (brain surgery) may be an option for people who have severe, treatment-refractory OCD. These surgeries are usually invasive (involve opening the skull) and can either ablate (destroy) or use electrical impulses to interrupt the brain circuits associated with OCD symptoms. Magnetic resonance-guided focused ultrasound (MRgFUS) is a technology that can be used to perform noninvasive (incisionless) neurosurgery for people with severe, treatment-refractory OCD and avoids the surgical risks of invasive procedures.

This health technology assessment looked at how safe and effective MRgFUS neurosurgery is for people with treatment-refractory OCD. It also looked at the budget impact of publicly funding MRgFUS neurosurgery and the experiences, preferences, and values of people with treatment-refractory OCD.

Read the full health technology assessment report for more information.

Magnetic Resonance-Guided Focused Ultrasound Neurosurgery for Treatment-Refractory Obsessive-Compulsive Disorder (PDF)
April 2024

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We reviewed evidence on the use of Magnetic Resonance-Guided Focused Ultrasound Neurosurgery for Treatment-Refractory Obsessive-Compulsive Disorder.

Read the latest draft recommendation and share your feedback.


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Posting date: April 23, 2024
Closing date: May 14, 2024



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