An open MRI machine is completely open on all four sides, making it much roomier, more quiet, and patient-friendly. With an open MRI scanner, the claustrophobic element of MRI scans is greatly reduced.
MAGIC DR - a handy mnemonic used to remember the potential causes of a cerebral ring enhancing lesion. M - Metastasis A - Abscess G - Glioblastoma multiforme I - Infarct (subacute phase) C - Contusion D - Demyelinating disease (eg. tumefactive MS) R.