Introduction of MR-Guided Focused Ultrasound (MRgFUS) Surgery Equipment

2021.08.10  87

Neurology Department at Samsung Medical Center is scheduled to introduce a Magnetic Resonance-Guided Focused Ultrasound (MRgFUS) equipment in September.


The principle of brain surgery using an ultrasound is to cover the head with 1,024 ultrasound generators and raising the temperature of the brain tissue, thereby inducing necrosis and destroying the target area by focusing ultrasound waves based on the magnetic resonance imaging.


The surgery is performed without any anesthesia or incisions. During the surgery, the temperature deep in the brain is measured by magnetic resonance imaging in real-time, and the improvement of the symptoms is checked simultaneously. Parkinson's disease, whose main symptoms are essential tremor and hand tremor that do not respond to drugs, is the disease with the safest and is most clearly proven to have a therapeutic effect to date.


Existing treatment methods for those diseases include direct insertion of electrodes and applying heat by passing high-frequency waves, deep brain stimulation in which electrodes are permanently implanted in the deep brain to apply electrical stimulation, and gamma knife to target radiation. There are also methods such as radio-surgery that focus on the target area. Each method has advantages and disadvantages depending on the patient's condition. The major advantage of ultrasound surgery is that it does not use invasive methods such as anesthesia or incision to directly insert electrodes into the brain, and it can monitor the treatment response during surgery in real-time to minimize complications and increase treatment effect.


Furthermore, the therapeutic effect appears immediately, and there is no delay in radiation-induced complications or the hassle of managing a permanently implanted device for deep brain stimulation.


Patients' Rights and Responsibilities

Patients' Rights

1. Right to receive medical care

Patients have the right to receive proper medical and nursing services for their Health Protection and Promotion and they will not be discriminated for gender, age, religion, status, nationality, language, race, or physical/mental/financial circumstances nor be violated of their health. Medical team may not deny medical care without justifiable reason.

2. Right to be informed & autonomous decision

Patients have the right to receive be well-informed and to inquire in detail about the treating physician’s specialty, status of their disease, purpose of the treatment, treatment plan, method, expected results and side effects of the treatment, discharge plan, medical cost, whether or not they are a subject to medical research, organ transplant/donation and etc, and to decide whether to give consent. Patients may stop or deny specific treatment or planned medical care within the ethical guideline and may decide on an alternative treatment.

3. Right to have confidentiality

Patients will not be violated of their rights to confidentiality regarding their physical/health status and privacy. Medical team and facility may not reveal or announce patient’s confidential information, including personal information, unless patient has gives consent or specified in the law, such as criminal investigation.

4. Right to request for consultation and mediation

Patients may request for consultation and mediation from an internal or external agency (Korea Consumer Agency, Korea Medical Dispute Mediation and Arbitration Agency) in the event of any medical dispute.

5. Right to be respected of values or beliefs

Patients will not be discriminated for their culture, religious values or beliefs, and their rights will not be violated.

6. Right to be physically protected and to have stability of mind and bod

Patients have the right to be protected from possible danger in the hospital and to have the stability of mind and body.


1. Responsible to trust and respect the medical team

Patients must accurately inform the medical team of their health condition, trust and respect the medical team’s treatment plan. Patients may be responsible for consequences which results from not following the instruction.

2. Responsible to not use dishonest method for medical treatment

Patients must reveal their identity before receiving any medical care and must not use false or dishonest method, such as receiving medical case under disguised ownership.

3. Responsible to abide by all hospital regulations

Patients must abide by all hospital regulations, respect hospital staff and other patients, and earnestly fulfill the financial obligation to the hospital.