The effects of time varying intravascular signal intensity and k-space acquisition order on three-dimensional MR angiography image quality
dc.contributor.author | Maki, Jeffrey H. | en_US |
dc.contributor.author | Prince, Martin R. | en_US |
dc.contributor.author | Londy, Frank J. | en_US |
dc.contributor.author | Chenevert, Thomas L. | en_US |
dc.date.accessioned | 2006-04-28T17:05:00Z | |
dc.date.available | 2006-04-28T17:05:00Z | |
dc.date.issued | 1996-07 | en_US |
dc.identifier.citation | Maki, Jeffrey H.; Prince, Martin R.; Londy, Frank J.; Chenevert, Thomas L. (1996)."The effects of time varying intravascular signal intensity and k-space acquisition order on three-dimensional MR angiography image quality." Journal of Magnetic Resonance Imaging 6(4): 642-651. <http://hdl.handle.net/2027.42/38572> | en_US |
dc.identifier.issn | 1053-1807 | en_US |
dc.identifier.issn | 1522-2586 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/38572 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=8835958&dopt=citation | en_US |
dc.description.abstract | The optimum infusion timing and k-space ordering for obtaining gadolinium-enhanced three-dimensional MR angiograms was determined through computer modeling using temporal contrast characteristics obtained from patient gadolinium infusion data. The effects of bolus timing were evaluated by varying the relationship between peak intravascular gadolinium concentration and the time at which the center of k space was acquired ( t ck ) for sequential and centric acquisition techniques. Flow phantom experiments were performed to validate the theoretical computations. Gadolinium concentration at the time of central k-space acquisition determines intravascular signal intensity. Artifacts, including vessel broadening and edge ringing, depend on the order in which k space is collected and on how rapidly the gadolinium concentration changes. Artifacts are greatest when the center of k space is acquired before the intravascular gadolinium peak. Application of the optimal infusion timing results in preferential arterial enhancement with a minimum of artifacts in patients undergoing MR angiography. | en_US |
dc.format.extent | 1118317 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Wiley Subscription Services, Inc., A Wiley Company | en_US |
dc.subject.other | Life and Medical Sciences | en_US |
dc.subject.other | Imaging | en_US |
dc.title | The effects of time varying intravascular signal intensity and k-space acquisition order on three-dimensional MR angiography image quality | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Medicine (General) | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan ; Department of Radiology, University of Michigan, 1500 East Medical Center Drive, Ann Arbor, MI 48109-0030 | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Department of Radiology, University of Michigan, Ann Arbor, Michigan | en_US |
dc.identifier.pmid | 8835958 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/38572/1/1880060413_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/jmri.1880060413 | en_US |
dc.identifier.source | Journal of Magnetic Resonance Imaging | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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