Position stability during radiosurgery of brain tumours
Completed
- Conditions
- Brain metastasesbrain tumours10029211
- Registration Number
- NL-OMON44274
- Lead Sponsor
- Antoni van Leeuwenhoek Ziekenhuis
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Completed
- Sex
- Not specified
- Target Recruitment
- 50
Inclusion Criteria
Patient must be planned for mask based or frame based SRS on the ICON system at our institute
Patients/Volunteers must be 18 years or older
Patients/Volunteers must sign informed consent
Exclusion Criteria
A contra-indication for use of the Elektromagnetic tracking system, e.g. a pacemaker.
Study & Design
- Study Type
- Observational non invasive
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method <p>The correlation between nose-tip motion and position with respect to motion and<br /><br>position of the head of the subject. Per fraction we will have at least 18000<br /><br>measurements (30 minutes x 10 Hz) based on which we can build a correlation<br /><br>model. Based on the EM tracking system and the CBCT data we can calculate the<br /><br>actual tumour displacement during a fraction. For different thresholds of<br /><br>actual tumour motion (0.5 mm, 1 mm, 1.5 mm, and 2 mm) we will establish the<br /><br>needed threshold for the HDMM system, and its accuracy in detecting the motion.</p><br>
- Secondary Outcome Measures
Name Time Method <p>The immobilization capabilities of the different masks will be assessed as the<br /><br>position and orientation deviation of the three sensors on the head in time<br /><br>with respect to the first measurement using a rigid point match.<br /><br><br /><br>The comfort of the different masks will be assessed based on scoring of the<br /><br>volunteers. For each mask they will score the comfort on a scale of 1 to 10.<br /><br>Data will be evaluated in a paired manor as this is observer dependent.</p><br>