exposure switch

exposure switch

(in radiology) a control device designed to interrupt the power automatically when pressure by the operator's hand or foot is released. The purpose is to prevent accidental continuing exposure of the patient to radiation. A common exposure switch is a foot pedal.
References in periodicals archive ?
Shall Use Aed (no Electrical Connection With The Exposure Switch Can Be Used).
Often these patients will have moved at least slightly by the time the radiologic technologist sprints to the exposure switch.
His species conforms unfailingly to one common imperative: engage floor radiography coverage, with your or whoever's thumb actuating the exposure switch at whatever hours it is decided your services are most needed.