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A modified quadrupole gradient set for use in high resolution MRI tagging.

W G O'Dell·J S Schoeniger·S J Blackband·E R McVeigh
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Abstract

A special purpose gradient set with a Cos(2 theta) current distribution has been constructed for high resolution MR imaging of small samples in a clinical Signa 1.5 T scanner using the existing gradient amplifiers. The X, Y, and Z gradient coils can attain gradient field strengths of 11.3, 4.7, and 15.2 G/cm at 100 amps current, respectively, with a slew rate of 20 G/cm/ms and usable ramp time of 150 microseconds. Field distortions are less than 2% over the central 8 cm of the bore, suitable for high resolution tagging of isolated canine hearts.

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AnimalsDogsHeartImage EnhancementIn Vitro TechniquesMagnetic Resonance ImagingJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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W G O'Dell, J S Schoeniger, S J Blackband, E R McVeigh. 1994. A modified quadrupole gradient set for use in high resolution MRI tagging.. https://doi.org/10.1002/mrm.1910320215

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