Gamma Knife Radiation for Cancer Treatment in Turkey

Introduction

Gamma Knife, developed by a Swedish neurosurgeon, is a precise radiation treatment method designed to treat skull diseases with millimeter accuracy.

How Does Gamma Knife Work?

Gamma Knife focuses beams from hundreds of cobalt sources onto a specific target. While each individual beam carries low energy, the cumulative effect of combining hundreds of these beams results in the delivery of highly focused energy to the target.

The therapeutic effect of Gamma Knife radiation is believed to occur through damage to the genetic code of brain tumors. This damage follows different pathways depending on the brain condition being treated.

The treatment aims to destroy fast-growing tumors and arteriovenous malformations (AVMs) while halting the growth of slow-growing tumors. It is used to treat brain diseases as well as conditions involving bones, blood vessels, nerves, skin, and tissues surrounding the brain.

Gamma Knife is widely preferred for treating various brain metastases, arteriovenous malformations, metastatic brain tumors, and benign brain tumors such as vestibular schwannomas and meningiomas.

Gamma Knife technology has been installed in more than 300 facilities worldwide and has been used to treat over a million patients. It is considered the standard treatment for intracranial diseases, with over 7,000 patients treated since 2005 in one Gamma Knife unit.

What Conditions Can Gamma Knife Treat?

Gamma Knife is designed for intracranial diseases and treats brain conditions along with those affecting bones, blood vessels, nerves, eyes, skin, and surrounding tissues.
Different technologies are applied to treat conditions in other parts of the body. Gamma Knife is recognized globally as a standard for treating intracranial diseases.

Areas of Use
Since its introduction for clinical use in 1968, Gamma Knife has been increasingly utilized. Statistics indicate that more than a million patients worldwide have been treated with Gamma Knife for various brain conditions.

Conditions Treated with Gamma Knife:

• Vascular Disorders:
  • Arteriovenous Malformation (AVM)
  • Cavernomas
• Benign Brain Tumors:
  • Vestibular Schwannoma
  • Hemangioblastoma
  • Meningioma
  • Chordoma
  • Pituitary Adenoma
  • Trigeminal Schwannoma
  • Pineal Tumors
  • Craniopharyngioma
• Malignant Brain Tumors:
  • Brain Metastases
  • Uveal Melanoma
  • Certain Gliomas
  • Nasopharyngeal Carcinoma
• Movement Disorders:
  • Tremors in Parkinson’s Disease
  • Essential Tremor
• Functional Disorders:
  • Trigeminal Neuralgia

Gamma Knife is also suitable for patients with deep or hard-to-reach brain tumors, those unfit for surgery due to age or medical conditions, and patients who opt out of open surgery.

Specific Applications of Gamma Knife:

• Brain Tumor Treatment:
  Gamma Knife is effective in treating both benign and malignant brain tumors by halting tumor growth or shrinking tumors when surgery is not an option.
• Pituitary Adenoma:
  Gamma Knife is used to control hormone levels and tumor growth in cases where surgery is not fully effective or where recurrence occurs.
• Arteriovenous Malformation (AVM):
  AVMs are abnormal tangles of blood vessels in the brain that can cause seizures or hemorrhages. Gamma Knife effectively treats AVMs by gradually reducing them over time.
• Vestibular Schwannoma:
  Gamma Knife is used to control the growth of vestibular schwannomas (acoustic neuromas), especially when surgery is not recommended.
• Trigeminal Neuralgia:
  Gamma Knife provides a minimally invasive alternative for pain relief in trigeminal neuralgia, particularly for elderly patients.

Treatment Procedure:

1. Stereotactic Frame Placement:
   A stereotactic frame is attached to the patient’s head to ensure precision. Local anesthesia is applied, and for children, general anesthesia is used if necessary.
2. Mask Option:
   For treatments on the Gamma Knife Icon, a mask may replace the stereotactic frame, enabling treatment over multiple sessions while protecting nearby sensitive structures.
3. Neuroimaging:
   MRI, CT, or angiography is used to visualize the area and plan the treatment accurately.
4. Dose Planning:
   Specialized computer programs determine the precise radiation dose, ensuring only the targeted area receives radiation.
5. Irradiation:
   The radiation process takes between 15 minutes to two hours, depending on tumor size and treatment complexity.
6. Patient Monitoring:
   Throughout the procedure, the Gamma Knife system tracks patient movement using CT and infrared sensors to maintain precise targeting.
7. Post-Treatment:
   Most treatments are completed in a single session, and patients can resume daily activities immediately. Travel by road or air is typically permitted the same day.

Conclusion:

Gamma Knife radiation therapy offers a non-invasive, highly precise treatment option for a variety of brain disorders, providing effective results with minimal recovery time. This cutting-edge technology allows patients to receive treatment with confidence, ensuring excellent outcomes while minimizing risks.