Gamma Knife radiosurgery is a highly precise form of stereotactic radiosurgery (SRS) used to target brain tumours, vascular malformations, and specific functional disorders without making any surgical incisions. Unlike conventional brain surgery, Gamma Knife uses multiple low-dose radiation beams that converge on a defined target, allowing high accuracy while sparing surrounding healthy tissue.
In Singapore, Gamma Knife treatment is available at Mount Elizabeth Novena Hospital, with fees that vary depending on medical complexity, facility costs, and specialist involvement. This guide outlines the procedure, cost factors, insurance coverage, and what to expect during treatment.
What Is Gamma Knife Radiosurgery?
Gamma Knife radiosurgery is a non-invasive, outpatient radiation procedure that uses up to 192 focused beams of gamma radiation to treat abnormal tissues in the brain.
It is commonly recommended for:
- Brain tumours (benign or malignant)
- Brain metastases
- Arteriovenous malformations (AVMs) — vascular tangles that, if left untreated, carry a high risk of brain bleeding and may require emergency stroke treatment in Singapore.
- Trigeminal neuralgia
- Acoustic neuromas
- Certain movement disorders
Most patients do not require general anaesthesia and can return home on the same day.
How Gamma Knife Works
- Pre-Treatment Imaging
A detailed MRI (and sometimes a CT) scan is performed to map the lesion’s exact location, size, and shape. During the Treatment Planning phase, an experienced neurosurgeon in Singapore collaborates closely with a radiation oncologist and medical physicist to calculate the exact radiation dose needed to target the lesion while sparing the surrounding healthy brain tissue. - Treatment Planning
A neurosurgeon, radiation oncologist, and medical physicist collaborate to:- Identify target coordinates
- Calculate radiation dose
- Customise beam angles
- Protect critical brain structures (e.g., optic nerves, brainstem)
Advanced planning software generates a three-dimensional treatment profile that optimises accuracy and safety.
- Frame or Mask System
A stereotactic frame or customised thermoplastic mask may be used to keep the patient’s head completely still during treatment. Frame placement is typically done under local anaesthesia. - Radiosurgery Session
Patients lie on a treatment couch, which positions the head into the Gamma Knife unit.
A session may last 30 minutes to 3 hours, depending on lesion complexity. - Post-Treatment Monitoring
Patients are monitored briefly and can usually go home the same day.
Follow-up MRI scans track treatment effectiveness over subsequent months.
Gamma Knife Radiosurgery Costs in Singapore
| Estimated Total Bill (Includes imaging, radiosurgery, specialist fees and facility charges) | $30,000 – 50,000
|
Factors Affecting Treatment Pricing
Lesion characteristics directly influence treatment complexity and cost. Multiple brain metastases require individual targeting and dose planning for each lesion, extending treatment time. Larger lesions may require fractionated treatment over multiple sessions, multiplying specific cost components.
Insurance and Medisave
Coverage for Gamma Knife radiosurgery may vary depending on the patient’s health insurance plan, corporate benefits, and whether the treatment is deemed medically necessary.
Integrated Shield Plans (IPs) & Private Health Insurance
For most Integrated Shield Plans (IPs) and private health insurance policies:
- Gamma Knife radiosurgery is generally claimable when it is medically necessary, such as when recommended for conditions like brain tumours, brain metastases, arteriovenous malformations (AVMs), trigeminal neuralgia, or other conditions where stereotactic radiosurgery is clinically indicated.
- Coverage typically applies to hospitalisation fees, day surgery charges, specialist fees, and procedural costs, subject to each plan’s annual limits, deductibles, and co-insurance.
Because insurers assess claims based on diagnosis, clinical justification, and policy terms, patients are strongly encouraged to check directly with their insurance provider or a licensed financial adviser to confirm their entitlements before proceeding.
Corporate Insurance Coverage
Many employers offer corporate medical insurance that may help offset the cost of Gamma Knife radiosurgery. Coverage may include inpatient or day-surgery benefits, specialist consultations, and pre-treatment imaging, depending on the company’s policy. Claim limits and co-payment requirements vary across insurers. Patients are encouraged to check with their HR department or benefits provider regarding eligibility, claim procedures, and whether a Letter of Guarantee (LOG) can be arranged before treatment.
Medisave Subsidies
Medisave can be used for eligible portions of the treatment, up to prevailing withdrawal limits.
Is Gamma Knife Suitable for You?
Your eligibility depends on:
- Type of condition
- Size, number, and location of lesions
- Prior radiation exposure
- Overall health status (note that older patients or those with pre-existing conditions may be advised to undergo cardiovascular screening prior to medical clearance)
Our Neurosurgeon will assess whether Gamma Knife or conventional surgery offers better clinical outcomes.
Commonly Asked Questions
Can Gamma Knife treatment be repeated if needed?
Repeat treatments remain possible for recurrent tumours or new lesions, though cumulative radiation doses to surrounding brain tissue must stay within tolerance limits.
What additional costs might arise after treatment?
Potential additional needs include management of radiation oedema (if any) requiring extended steroid courses, anti-seizure medications for treatment-related epilepsy, and additional imaging if new symptoms develop.
Next Steps
If you have been diagnosed with a brain tumour, AVM, trigeminal neuralgia, or other conditions that may benefit from stereotactic radiosurgery, consult with a neurosurgeon to determine whether Gamma Knife is an appropriate option.
Early evaluation helps with:
- Treatment planning
- Insurance pre-authorisation
- Financial counselling
- Scheduling suitable treatment dates
