Title:
Inherent insensitivity to RF inhomogeneity in FLASH imaging

dc.contributor.advisor Hu, Xiaoping
dc.contributor.author Wang, Danli en_US
dc.contributor.committeeMember Oshinski, John
dc.contributor.committeeMember Benkeser, Paul J.
dc.contributor.department Biomedical Engineering en_US
dc.date.accessioned 2005-03-03T21:43:47Z
dc.date.available 2005-03-03T21:43:47Z
dc.date.issued 2003-12-12 en_US
dc.description.abstract MRI as a non-invasive method for studying the internal structure and function of the human body was developed over the past three decades. In MRI, radiofrequency (RF) field inhomogeneity is an unavoidable problem in practice and becomes severe at high magnetic fields due to the dependence of B1 on the sample. It leads to nonuniformities in image intensity and contrast, causing difficulties in quantitative interpretation and image segmentation. In this thesis, we report an interesting observation that the fast low-angle shot (FLASH) sequence, which is often used for anatomic imaging and morphometric studies, can be insensitive to RF inhomogeneity when the same coil is used for both transmission and reception and a proper nominal flip angle is employed. Recommendations also are given for optimum processing procedures for FLASH imaging. This observation can be useful in understanding the signal behavior of FLASH in the presence of RF inhomogeneity and provides a guide for selecting parameters in FLASH imaging. en_US
dc.description.degree M.S. en_US
dc.format.extent 1069905 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5123
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Image uniformity en_US
dc.subject RF inhomogeneity
dc.subject FLASH
dc.subject Flip angle
dc.subject.lcsh Magnetic resonance imaging en_US
dc.subject.lcsh Imaging systems Image quality en_US
dc.title Inherent insensitivity to RF inhomogeneity in FLASH imaging en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.corporatename Wallace H. Coulter Department of Biomedical Engineering
local.contributor.corporatename College of Engineering
relation.isOrgUnitOfPublication da59be3c-3d0a-41da-91b9-ebe2ecc83b66
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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