Definition of Magnetic resonance spectroscopic imaging

Magnetic resonance spectroscopic imaging: (MRSI) A noninvasive imaging method that provides information about cellular activity (metabolic information). It is used in oncology along with magnetic resonance imaging (MRI) which provides information about the shape and size of the tumor (spacial information). Also called 1H-nuclear magnetic resonance spectroscopic imaging and proton magnetic resonance spectroscopic imaging.


Last Editorial Review: 6/14/2012

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