For an MRI of the head, you lie with your head inside a special machine (scanner) that has a strong magnet. The MRI can show tissue damage or disease, such as infection or inflammation, or a tumor, stroke, or seizure. Information from an MRI can be saved and stored on a computer for more study.
what has been seen cannot be unseen. The act of witnessing something so traumatic or disturbing that it is futilely wished to be unseen. Most commonly experienced on 4chan's /b/ or senior citizen dating websites. Me: Oh hey, look, some Nigerian dude emailed me a file called BlueGoatseWaffles! Maybe its a picture of blue goats doing people stuff...like cooking waffles! Me: What has been seen cannot be unseen.
The hows and whys of invisibility. The condition of being unseen is a fantasy of power, and a metaphor for powerlessness. It is possible, according to many sources, to become invisible, but you must be patient, methodical, and willing to eat almost anything. One characteristic spell, recorded by the British polymath John Aubrey around 1680, instructs you to begin by acquiring the severed head of a man who has committed suicide.