Position stability during radiosurgery of brain tumours

Position stability during radiosurgery of brain tumours - Position stability during SRS of brain tumours

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON44274

Enrollment

Registered

2017-12-14

Start date

2017-10-01

Completion date

Unknown

Last updated

2024-04-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Brain metastases brain tumours

Interventions

None listed

Eligibility

Age

18 Years to 99 Years

Inclusion criteria

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

Exclusion criteria: A contra-indication for use of the Elektromagnetic tracking system, e.g. a pacemaker.

Design outcomes

Primary

Measure	Time frame
The correlation between nose-tip motion and position with respect to motion and position of the head of the subject. Per fraction we will have at least 18000 measurements (30 minutes x 10 Hz) based on which we can build a correlation model. Based on the EM tracking system and the CBCT data we can calculate the actual tumour displacement during a fraction. For different thresholds of actual tumour motion (0.5 mm, 1 mm, 1.5 mm, and 2 mm) we will establish the needed threshold for the HDMM system, and its accuracy in detecting the motion.	—

Measure

Time frame

The correlation between nose-tip motion and position with respect to motion and position of the head of the subject. Per fraction we will have at least 18000 measurements (30 minutes x 10 Hz) based on which we can build a correlation model. Based on the EM tracking system and the CBCT data we can calculate the actual tumour displacement during a fraction. For different thresholds of actual tumour motion (0.5 mm, 1 mm, 1.5 mm, and 2 mm) we will establish the needed threshold for the HDMM system, and its accuracy in detecting the motion.

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Secondary

Measure	Time frame
The immobilization capabilities of the different masks will be assessed as the position and orientation deviation of the three sensors on the head in time with respect to the first measurement using a rigid point match. The comfort of the different masks will be assessed based on scoring of the volunteers. For each mask they will score the comfort on a scale of 1 to 10. Data will be evaluated in a paired manor as this is observer dependent.	—

Measure

Time frame

The immobilization capabilities of the different masks will be assessed as the position and orientation deviation of the three sensors on the head in time with respect to the first measurement using a rigid point match. The comfort of the different masks will be assessed based on scoring of the volunteers. For each mask they will score the comfort on a scale of 1 to 10. Data will be evaluated in a paired manor as this is observer dependent.

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Countries

Netherlands

Outcome results