Comparing Gamma Knife radiosurgery and microsurgery for brain metastases

Dose-staged Gamma Knife Radiosurgery Versus Microsurgical Resection - Evaluation of Neurosurgical Treatment Methods for Patients With Larger Brain Metastases - an Explorative Prospective Study

NA · Medical University of Vienna · NCT04857905

This study is testing whether a non-invasive treatment called Gamma Knife radiosurgery works better than traditional surgery for people with certain types of brain tumors and limited brain metastases.

Quick facts

PhaseNA
Study typeInterventional
Enrollment100 (estimated)
Ages18 Years to 90 Years
SexAll
SponsorMedical University of Vienna (other)
Locations1 site (Vienna)
Trial IDNCT04857905 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of dose-staged Gamma Knife radiosurgery compared to microsurgical resection in treating brain metastases. It focuses on patients with specific types of primary tumors and limited brain metastases, assessing outcomes based on tumor volume and patient health status. The study aims to provide a non-invasive treatment option for patients who may not be suitable for traditional surgery. Participants will be monitored for treatment efficacy and safety.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 to 90 with specific primary cancers and limited brain metastases who can tolerate both treatment options.

Not a fit: Patients with more than three brain metastases or those with contraindications for either treatment option may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could offer a less invasive treatment option for patients with brain metastases, potentially improving their quality of life and outcomes.

How similar studies have performed: Previous studies have shown promising results for Gamma Knife radiosurgery in treating brain metastases, indicating that this approach has potential based on existing evidence.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients over 18 years and under 90 years
* Patients with KPS ≥70
* Patients with NSCLC, melanoma, breast cancer or renal cancer as primary tumor
* Maximum of three brain metastases on the diagnostic MRI
* Tumor volume of 8-20 ccm3 on the diagnostic MRI
* Lobular brain metastases
* Patients without any contraindications for both treatment options
* Written, signed informed consent for study particaption after study explanation

Exclusion Criteria:

* Patients under 18 years and over 90 years
* Patients with KPS \<70
* Patients with other primary tumor
* More than three brain metastases on the diagnostic MRI
* Tumor volume \<8 or \>20 ccm3 on the diagnostic MRI
* Patients with contraindications for both treatment options

Where this trial is running

Vienna

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Brain Metastases, Gamma Knife Radiosurgery, Brain metastases, Microsurgical resection

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.