This pilot clinical trial studies how well head and neck maskless immobilization device works in immobilizing patients with head and neck cancers or intracranial tumors undergoing radiation therapy. Maskless immobilization device may help to prevent movement of head during radiation therapy and immobilize patients with the same accuracy and reliability as the standard thermoplastic mask routinely used for patients receiving radiation therapy.

PRIMARY OBJECTIVES:

I. To assess the setup accuracy and reproducibility of the maskless immobilization device (MID) in patients being treated for head and neck cancers or intracranial tumors who require radiation therapy

SECONDARY OBJECTIVES:

I. To assess the patient comfort and quality of life with the MID compared to the thermoplastic mask.

Inclusion Criteria:

• Patients being treated for head and neck cancers who require radiation therapy or intracranial tumors, over a 2 to 7 week period of time
• Age ≥ 18 years old
• Subjects are capable of giving informed consent or have an acceptable surrogate capable of giving consent on the subject's behalf
• Provide signed and dated informed consent form

Exclusion Criteria

• History of prior trauma or orthopedic surgery to the cervical vertebral column/spine, which may interfere with the RT planning process
• Patient requires a neck brace for medical reasons
• Skull or bony defect in the area contacting the immobilization straps
• RT delivered by clinical setup only (no CT simulation)