Restricted field of view magnetic resonance imaging of a dynamic time series.

Restricted field of view magnetic resonance imaging of a dynamic time series. Research Abstract Details 

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Restricted field of view magnetic resonance imaging of a dynamic time series. Abstract Text:

Laura Pisani,Roland Bammer,Gary Glover,

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 T2*-induced blurring compared to a conventional sequence. Sequence utility is demonstrated for high-resolution rFOV functional MRI (fMRI) in the visual cortex. The rFOV sequence may prove to be useful for other multislice dynamic and high-resolution imaging applications.

Restricted field of view magnetic resonance imaging of a dynamic time series. Publishing Authors By Initials

L Pisani,R Bammer,G Glover,

For similar nervous system: central nervous system: brain: prosencephalon: telencephalon: cerebrum: cerebral cortex: occipital lobe: visual cortex research abstracts see: nervous system: central nervous system: brain: prosencephalon: telencephalon: cerebrum: cerebral cortex: occipital lobe: visual cortex research

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MEDLINE DATE:

Restricted field of view magnetic resonance imaging of a dynamic time series. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Magnetic resonance in medicine : official journal

VOLUME: 57

Page Numbers: 297-307

Journal Abbreviation:

ISSN: 0740-3194

DAY: 3

MONTH: Feb

YEAR: 2007

Restricted field of view magnetic resonance imaging of a dynamic time series. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8505245

Restricted field of view magnetic resonance imaging of a dynamic time series. Keywords Mesh Terms:

KEYWORDS: Visual Cortex

MESH TERMS: anatomy & histology

Chemical & Substance for Abstract: Restricted field of view magnetic resonance imaging of a dynamic time series. Information

Substance Name: Gels

Registry Number: 0

Grant and Affiliation Information for Restricted field of view magnetic resonance imaging of a dynamic time series.

AFFILIATION: Lucas Center, Department of Radiology, Stanford University, Stanford, California 94305-5488, USA. lpisani@stanford.edu

Country: United States

AGENCY: United States NCI

GRANT: T32 CA09695

ACRONYM: CA

MEDLINETA: Magn Reson Med

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