Intrafractional Head Movement During Radiosurgery
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|ClinicalTrials.gov Identifier: NCT03896555|
Recruitment Status : Completed
First Posted : April 1, 2019
Last Update Posted : April 1, 2019
This study investigates the intrafractional accuracy of a frameless thermoplastic mask used for head immobilization during stereotactic radiotherapy. Non-invasive masks cannot completely prohibit head movements. Previous studies attempted to estimate the magnitude of intrafractional inaccuracy by means of pre- and postfractional measurements only. However, this might not be sufficient to accurately map also intrafractional head movements.
Intrafractional deviation of mask-fixed head positions is measured in five patients during a total of 94 fractions by means of close-meshed repeated ExacTrac measurements conducted during the entire treatment session. From the obtained data the investigators evaluate the need to adjust safety margins around the gross tumor volume (GTV) whenever the investigated thermoplastic mask is used instead of invasive ring fixation.
|Condition or disease||Intervention/treatment|
|Brain Metastases, Adult||Device: ExacTrac position verification|
|Study Type :||Observational|
|Actual Enrollment :||5 participants|
|Official Title:||Intrafractional 6D Head Movement With Mask Fixation During Stereotactic Intracranial RT-sessions|
|Actual Study Start Date :||November 1, 2014|
|Actual Primary Completion Date :||September 1, 2015|
|Actual Study Completion Date :||September 1, 2015|
- Device: ExacTrac position verification
Repeated measurement of patient head position with ExacTrac X-ray Monitoring
- 3D Head deviation [ Time Frame: 5 to 20 days ]Length of 3D head position deviation during RT session
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03896555
|Medical University Innsbruck|
|Innsbruck, Austria, 6020|
|Principal Investigator:||Meinhard Nevinny-Stickel, MD, PhD||Medical University Innsbruck|