title: Noise in MRI.
abstract: This study analyzes the signal-to-noise ratio (SNR) in magnetic resonance imaging. The factors that determine the SNR are derived starting from basic principles. The SNR, for a given object, is shown to be proportional to the voxel volume and the square root of the acquisition time. The noise generated by the body is derived using a cylindrical model and is shown to be proportional to the square of the radius and the square root of the length.
authors.affiliation: Department of Electrical Engineering, Stanford University 94305, USA.
authors.forename: A
authors.initials: A
authors.lastname: Macovski
mesh_terms: D006801:Humans; D008279:Magnetic Resonance Imaging; D012815:Signal Processing, Computer-Assisted