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- Title
Restricted field of view magnetic resonance imaging of a dynamic time series.
- Authors
Pisani, Laura; Bammer, Roland; Glover, Gary
- Abstract
A restricted field of view (rFOV) approach for imaging a dynamic time series of volumes of limited spatial extent within a larger subject is described. The shorter readout with rFOV-MRI can be exploited to either limit image artifacts or increase spatial resolution. To accomplish rFOV imaging of a multislice volume for a dynamic series, an outer volume suppression (OVS) preparation that saturates signal external to a cylinder through the subject is followed by slice-selective excitation and a spiral readout. The pass- and stopband efficiencies of the OVS in an agar gel phantom were 97% (±1.5%) and 3% (±1%), respectively. Profiles of the temporal signal-to-noise ratio (SNR) were measured in a phantom and an adult brain. The rFOV sequence reduced distortions from off-resonance signal and T
- Publication
Magnetic Resonance in Medicine, 2007, Vol 57, Issue 2, p297
- ISSN
0740-3194
- Publication type
Article
- DOI
10.1002/mrm.21115