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Intrafractional Head Movement During Radiosurgery

NCT03896555 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 5

Last updated 2019-04-01

No results posted yet for this study

Summary

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.

Conditions

  • Brain Metastases, Adult

Interventions

DEVICE

ExacTrac position verification

Repeated measurement of patient head position with ExacTrac X-ray Monitoring

Sponsors & Collaborators

  • Medical University Innsbruck

    lead OTHER

Principal Investigators

  • Meinhard Nevinny-Stickel, MD, PhD · Medical University Innsbruck

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2014-11-01
Primary Completion
2015-09-01
Completion
2015-09-01

Countries

  • Austria

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03896555 on ClinicalTrials.gov