Magnetic resonance spectroscopy – specialized magnetic resonance imaging used to characterize and quantitative relative concentrations of brain metabolites. This information can be used in determining the tissue type in an area of interest on a routine magnetic resonance image.
Glossary
WP Glossary
MRS
Magnetic resonance spectroscopy – This refers to using the MR scanner to perform a NMR analysis of the tissue being imaged ignorer to gain information about its molecular makeup.
MRSA
Methicillin resistant Staphylococcus aureus – a strain of bacteria that has developed a resistance to a commonly used penicillin antibiotic, methicillin.
MSA
Muscle smooth actin – refers to a stain for muscle actin occurring in skeletal, cardiac and other smooth muscles. It does not stain non-muscle actin. It is used to differentiate tumors containing muscle elements from those that do not.
MSX2
A gene responsible for coding for the synthesis of the Homeobox protein MSX-2. This protein regulates apoptosis of neural crest cells occurring during the morphogenesis of the skull and face.
MTHFR
Methylenetetrahydrofolate reductase – the key enzyme of the methyl cycle, it catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate that results in the methylation of homocysteine with methionine as the end product. Mutations in the gene producing this enzyme have been associated with cancers and neural tube defects among other things.
mTOR
Mammalian target of rapamycin – a protein kinase that regulates cell growth, proliferation, motility and survival. This regulatory effect can be disrupted by some forms of cancer leading to accelerated cell growth.
Multidetector Row CTA
Examination of blood vessel architecture using a CT with multiple rows of detector elements as opposed to a simple linear array. The type of CT scanner used has both a faster speed of image acquisition and greater image resolution as compared to a conventional CT scanner.
MVA
Motor vehicle accident
Nanoparticle
Nanoparticle: Refers to an ultrafine particle or a particle of matter that is between 1 and 100 nanometres (nm) in diameter.
