Stereotactic radiosurgery is a form of high-precision beam radiation therapy used to treat primary or secondary lesions of the brain and spinal cord. It involves the use of X-rays precisely focused for targeted destruction of tumor cells and eradication of any remaining malignant cells and metastases, while sparing vital structures and healthy brain tissues. The precision of this procedure results in minimal damage to healthy tissues surrounding the target by allowing the minimization of the radiation dose and exposure.
The procedure is performed as follows:
- The patient’s head is positioned in a stereotactic frame
- MRI imaging or multi-detector (multi slice) CT scanning is performed
- Radiologists analyze the data from 3D scan images to determine the exact 3D coordinates of the tumor, its boundaries, safe surgical trajectory and radiation dose (single or multiple fraction)
- Individualized radiation treatment plans are developed based on thorough analysis of the data.
In most cases, a short course of therapy can be completed on the same day. Each treatment session (fraction) can last from 10 minutes to 1 hour.
Stereotactic surgery for treatment of smaller size brain and spinal cord tumors or metastases has a high success rate. Such minimally invasive procedures are much less traumatic and carry a minimal risk of complications.
Stereotactic radiotherapy has proved effective in treating recurrent tumors. It aims to control the growth rate of metastases by destroying cancer cells or reducing the extent of metastases, while preserving healthy brain tissues. It is also successfully used for treating acoustic neuromas, meningiomas, cavernomas, pituitary adenomas, etc.
Stereotactic radiosurgery has become the most common treatment option for metastatic brain tumor as it prevents the growth and spread of brain tumors. The incidence rate of brain metastases in adult cancer patients is very high. It is one of the most typical neurological complications associated with systemic diseases. Today, due to the availability of advanced therapies, the survival rate is high among patients diagnosed with primary cancer. However, this group of patients is at higher risk of cancer recurrence and metastases.
If metastases are located in surgically less accessible areas the best solutions can always be provided by our sophisticated stereotactic units and navigation systems. The key to successful treatment is accurate diagnosis, along with the ability to visualize a response of the involved tissues to the administered treatment.
Following are some of the tumors and conditions treated with stereotactic radiosurgery:
- Benign tumors (meningioma, papilloma, adenoma, etc.) can be eradicated in 93% of cases, depending on their location. Treatment rates for malignant tumors can also vary, depending on the tumor type. Another benign tumor type which can be successfully treated with stereotactic radiofrequency electrosurgery is acoustic schwannoma – acoustic neuroma. The treatment efficacy rate for this tumor can be as high as 95%, especially in case of primary localization. In 70-90% of patients, the surgery may also help preserve hearing.
- Arteriovenous malformation (AVM) is a vascular disorder that occurs when the carotid artery forms an abnormal tangle with veins of the brain. It can be small or large. Pathological changes in blood vessels can often lead to cerebrovascular accidents and acute strokes.
Treatment of arteriovenous malformations with stereotactic radiofrequency electrosurgery does not affect healthy brain tissues, it destroys the AVM and causes the blood vessels to close off over time. The efficacy rate is 95%.
- Trigeminal neuralgia is a condition when intense facial pain causes the facial muscles to contract. When these episodes tend to recur over a prolonged period of time with various degrees of intensity, it is obvious to the specialists that the cause of this pain is trigeminal neuralgia.
- Treatment with medications often proves to be ineffective, while surgical intervention is only considered in cases of most excruciating pain. Trigeminal neuralgia can be successfully treated using state-of-the-art stereotactic systems. Non-invasive procedures can quickly relieve pain. The pain disappears completely in 65-77% of cases.
- Spinal metastases are quite common, with 40% of lesions typically located in the spine. In these cases, stereotactic radiofrequency surgery can help patients preserve spine motion and stability. Long-term clinical studies have provided substantial evidence that stereotactic radiofrequency electrosurgery is safe and effective therapy for spinal tumors. The laser disc vaporization method is successfully used at Tel Aviv Sourasky Medical Center (Ichilov) in Israel. The center features specially equipped operating rooms for patients with spinal metastases. Our team of highly skilled medical professionals can safely and efficiently relieve suffering of our patients by using state-of-the-art stereotactic instruments and systems.
At Tel Aviv Sourasky Medical Center (Ichilov), highly sophisticated and unique minimally invasive surgeries are performed in different regions of the brain, spine, and peripheral nerves. Here you’ll find exceptional quality medical care delivered by world class specialists. The center’s team of highly qualified medical professionals consists of neurosurgeons, radiologists, and other related medical specialties. Our mission is to improve your health. You will be in safe hands here!