The instrument (1) suitable for an MRI environment consists of an electrical power source (2) and other MR safe class elements and the electrical power source (2) includes, and, in particular, is made up of, one or more MR safe, non-magnetic electric batteries (5). This instrument (1) is, in particular, a lighted, disposable laryngoscope that consists of a part that is disposable after use that forms a tongue-depressor blade (3) and a tubular handle (4) that contains a plurality of MR safe, non-magnetic electric batteries (5).
