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Optical Surface Guidance for External Radiotherapy of Head and Neck Cancer

Feasibility of Surface Optical Guidance to Replace the Restraint Mask for External Radiotherapy of Head and Neck Cancer

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06627075
Acronym
SUGAR
Enrollment
42
Registered
2024-10-04
Start date
2024-12-12
Completion date
2026-07-29
Last updated
2026-08-13

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

Conditions

Otorhinolaryngeal Cancer

Keywords

Radiotherapy, Optical surface guidance

Brief summary

The goal of this clinical trial is to test the use of surface repositioning alone, without a restraint mask, during radiotherapy sessions for patients with head and neck cancer.

Detailed description

In radiotherapy treatments for head and neck cancer, the use of a mask is recommended for patient immobilization. The mask completely covers the head and shoulders, ensuring reproducible positioning at every session. However, using a mask can be oppressive and anxiety-provoking for patients. At the same time, technological developments have led us to use optical surface camera systems to position and monitor patients in the treatment room. In this way, if a movement exceeding the threshold is detected during a session, the treatment is automatically interrupted. However, despite the use of the mask, movements are still possible underneath, and are not detected by the surface cameras. The study's hypothesis is that the use of surface repositioning alone could guarantee reproducible treatment, as in combination with a thermoformed mask. In addition, eliminating the mask would mean greater comfort and improved quality of life for patients.

Interventions

PROCEDURESurface Guided RadioTherapy (SGRT) without mask

Firstly, patients are positioned in a vacuum mattress that moulds their head, neck and shoulders for a reference scan. During the treatment sessions, patients are positioned according to the reference scan, using the surface camera system. Once the observed offsets have been applied, the patient's surface is captured. Treatment can then begin, with continuous monitoring of displacements by the surface camera system. Automatic beam interruption is provided during treatment in the event of motion detection exceeding the standard tolerance threshold (\>3 mm). If the use of a thermoformed mask during your treatment prove necessary, for whatever reason, will not result in a halt to the research. Patients receive between 10 and a max of 35 radiotherapy sessions. The follow-up period begins after the last radiotherapy session, and patients are assessed at 4 or 6 weeks and at 3 months by a radiotherapist.

Sponsors

Center Eugene Marquis
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SUPPORTIVE_CARE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients over 18 years of age * Patients undergoing palliative or curative treatment for oro-rhino-laryngeal cancer * Patients with an indication for radiotherapy treatment, with or without complementary treatment (chemotherapy, immunotherapy), with a number of sessions between 10 and 35 * Patients who have dated and signed an informed consent form

Exclusion criteria

* Patients with uncontrollable movements * Patients under psychiatric care * Patients who do not understand or read French * Patients participating in an interventional study testing another medical intervention * Patients under guardianship, curatorship, safeguard of justice or deprived of liberty * Pregnant or breast-feeding women * Patients without social security coverage

Design outcomes

Primary

MeasureTime frameDescription
Measurement patient displacement during surface-guided radiotherapy sessionsThrough study completion, an average of 1 yearAverage length of linear translation vector during session (measured by surface cameras) over all sessions performed

Countries

France

Contacts

PRINCIPAL_INVESTIGATORCoralie Geffroy

Centre de Lutte contre le Cancer Eugène Marquis

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 14, 2026