Observation of significant signal voids in images of large biological samples at 11.1 T.
作者信息
Beck Barbara L, Jenkins Kelly, Caserta Jim, Padgett Kyle, Fitzsimmons Jeffrey, Blackband S J
机构信息
The McKnight Brain Institute, University of Florida, Gainesville, Florida, USA.
出版信息
Magn Reson Med. 2004 Jun;51(6):1103-7. doi: 10.1002/mrm.20120.
PMID:15170828
Abstract
Proton MRI of large biological samples were obtained on an 11.1 T / 40 cm instrument. Images were obtained of a fixed human brain and a large piece of fresh beef. The proton MR images demonstrate severe distortions within these conductive samples, indicative of shortened electrical wavelengths and wave behavior within the sample. These observations have significant implications with respect to the continuing evolution of MR to higher magnetic field strengths on large samples, particularly on humans.
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