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Measurements of magnetic field variations in the human brain using a 3D-FT multiple gradient echo technique.
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1995 (Engelska)Ingår i: Magnetic Resonance in Medicine, ISSN 0740-3194, E-ISSN 1522-2594, Vol. 33, nr 2, s. 171-7Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A magnetic resonance 3DFT multiple gradient-echo technique was used for measurements of the proton spectrum for each voxel in the measured slice. Water, fat, magnetic field and T2 distributions in the head of a normal volunteer and a patient with intracerebral hematoma were computed. Magnetic field variations caused by the head were calculated after correction for the static magnetic field inhomogeneity. Large local magnetic field variations up to 3 ppm were found in the human brain near interfaces between air or bone and brain tissues and 0.5 ppm between hematoma and brain tissue. Information about magnetic field variations could be useful for shimming procedures in vivo and for correcting artifacts in imaging and spectroscopy.

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1995. Vol. 33, nr 2, s. 171-7
Nyckelord [en]
magnetic resonance spectroscopy
Nationell ämneskategori
Medicin och hälsovetenskap
Forskningsämne
Radiologi
Identifikatorer
URN: urn:nbn:se:uu:diva-109820PubMedID: 7707906OAI: oai:DiVA.org:uu-109820DiVA, id: diva2:300529
Tillgänglig från: 2010-02-26 Skapad: 2009-10-26 Senast uppdaterad: 2017-12-12

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