Open-face masks with Surface Guided Radiation Therapy

In the pursuit of delivering effective cancer treatment, innovations in both accuracy and patient experience are critical. One such advancement is using open-face masks in combination with Surface-Guided Radiation Therapy (SGRT), particularly in head and neck radiotherapy. 

Radiotherapy demands precise immobilization to ensure that treatment is delivered exactly as planned. This has traditionally meant full-face thermoplastic masks for head and neck patients, rigid and often restrictive devices that cover the entire face to limit motion. 

While effective in maintaining position, these masks can cause emotional discomfort and claustrophobia, sometimes leading to distress or challenges with compliance. Open-face masks offer a refined alternative. By leaving parts of the face uncovered, they reduce the immobilization's psychological burden while still providing reliable support for treatment. 

Where SGRT comes in 

Surface Guided Radiation Therapy (SGRT) enhances open face masks by adding a non-contact layer of monitoring to ensure the patient remains in the correct position throughout the treatment session. Using cameras, modern SGRT systems track surface motion across defined regions of interest on the patient's face or body. This makes it possible to: 

• Detect subtle movements during treatment 

• Maintain accurate positioning without the need for permanent marks or tattoos 

• Avoid additional imaging doses, since setup accuracy is verified optically 

Clinical advantages in head and neck treatments 

In head and neck radiotherapy, accuracy is vital. The treatment volumes are often closely surrounded by sensitive organs and tissues. Even slight deviations can affect outcomes or increase side effects. SGRT, when integrated with open face mask use, addresses this challenge without sacrificing patient well-being. 

Benefits observed in clinical settings include: 

• More comfortable and tolerable immobilization leads to greater treatment compliance. 

• Precise surface tracking is beneficial in stereotactic or hypofractionated regimens. 

• Reduced need for reimaging or repositioning, saving valuable time and improving throughput. 

Open face masks also facilitate better communication with patients during setup, reducing anxiety and allowing clearer verbal interaction when necessary.