Abstract: A headrest, especially suited for suspending the head of a patient over the detector of a gamma ray brain scanning or X-ray apparatus, has a three-sided body sized for freely embracing the patient's head and supports a head cradling sling tape draped over the tops of the side walls of the body and releasably secured to the outer faces of the side walls by fasteners on the tape and side walls which adhere when pressed together. A second similar tape is also draped over the tops of the sidewalls and releasably anchored to the side walls to engage the patient's forehead for immobilizing the head. The fasteners are preferably "Velcro" tapes with the hook tapes secured to the outer faces of the side walls of the body near the top edges thereof while the head cradling and forehead engaging tapes have pile or loops interlocking with the hook tapes.