Comparing Radiotherapy Immobilization Systems for Anxious HNC Patients

Conditions

• Anxiety
• Claustrophobia
• Head and Neck Cancer

Eligibility Criteria

Sex

ALL

Age

18 Years - N/A

Healthy Volunteers

Not accepted

Interventions

• OSMS position management — DEVICE
  Patient position management in real time during radiation using an optical Surface Management System (OSMS) (Vision RT)

Study Details

Background: Radiotherapy is a mainstay of treatment for ENT cancers, and its indication is frequent. Patients are positioned and immobilized using a thermoplastic mask, which is attached to the treatment table for the duration of each daily treatment. The mask's purpose is to prevent patient movement and ensure reproducible positioning. The advantages of using thermoplastic masks come at a cost for many patients. It is well established that mask fixation and mask anxiety are major concerns for patients, adversely affecting their quality of life and hindering treatment compliance. Surface-guided radiotherapy (SGRT) enables patients to be positioned and their movements monitored in real time during treatment. This technique has become more widely available in recent years, and is attractive because it does not involve ionizing radiation. However, although preliminary data have suggested a potential reduction in anxiety, this technique has not been evaluated for ENT RT in anxious/claustrophobic patients who cannot tolerate immobilization masks. Objective: Investigators propose a pilot study to evaluate the feasibility and tolerability of using SGRT to manage position for patients with ENT cancer who report claustrophobia/anxiety. Methodology: 15 participants will be recruited by the treating radiation oncologist from among patients scheduled to undergo radiation therapy at CHUM for their ENT cancer and identifying as claustrophobic/anxious. Participants who consent will be scheduled to undergo their radiotherapy using SGRT. Patients will be systematically treated with Volumetric Modulated Arc Therapy (VMAT) using SGRT on the linear accelerator with the Optical Surface Management System (OSMS) for the duration of the radiotherapy. Measures: Patients' anxiety will be assessed using the GAD-7 and the CLQ throughout the treatment process. The feasibility and accuracy of radiotherapy treatment will be assessed using planning and daily pre-treatment examinations. In addition, skin toxicity will be assessed weekly. Analyses: 1) Descriptive analyses, i.e. frequencies for categorical variables and means and standard deviations for continuous variables. 2) Estimation of confidence intervals. Anticipated outcomes: Completion of this pilot project will enable investigators to plan and refine the methodological and organizational aspects for a large-scale study, i.e., a Phase III clinical trial comparing the use of SGRT with the use of a thermoplastic immobilization mask for anxious patients.

Key Dates

First listed

Feb 13, 2024

Start date

Oct 15, 2026

Status verified

Aug 2026

Primary completion

Sep 1, 2028

Completion

Feb 1, 2029

Study Design

Enrollment

15 participants (estimated)

Allocation

NA

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Arms

• Experimental: SGRT
  Patient position will be managed by optical surface management system (OSMS). Equipment for this procedure includes an IMRT board, a long head cushion (with transparent Timo, moldcare, and shim), anatomical markers the cushion (shoulders, under the chin, etc.), a kneefix and arm plates. Every day, prior to treatment, there will be (1) A lateral kilo voltage (kV) image for jaw positioning and (2) a CBCT with standard match (3D column then 3D GTV/PTV). During treatment, patients will undergo real-time monitoring with the VisionRT system (SGRT). A second CBCT will de carried mid-treatment (after the 2nd of 3 arcs) and patient's position will be adjusted if deemed necessary.

Primary Outcome Measure

Anxiety questionnaire [ Time Frame: weekly from baseline to last week of treatment ]

Central Contacts

• Mom Phat, RN
  514-890-8000
  [email protected]
• Marie-Eve Pelland, Ph.D.
  514-890-8000
  [email protected]

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