Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 조항준 | - |
dc.date.accessioned | 2021-03-05T05:32:52Z | - |
dc.date.available | 2021-03-05T05:32:52Z | - |
dc.date.issued | 2019-12 | - |
dc.identifier.citation | MAGNETIC RESONANCE IN MEDICINE, v. 84, no. 1, page. 192-205 | en_US |
dc.identifier.issn | 0740-3194 | - |
dc.identifier.issn | 1522-2594 | - |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/10.1002/mrm.28110 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/160262 | - |
dc.description.abstract | Purpose To demonstrate the feasibility of pseudo-continuous arterial-spin-labeled (pCASL) imaging with 3D fast-spin-echo stack-of-spirals on a compact 3T scanner (C3T), to perform trajectory correction for eddy-current-induced deviations in the spiral readout of pCASL imaging, and to assess the correction effect on perfusion-related images with high-performance gradients (80 mT/m, 700T/m/s) of the C3T. Methods To track eddy-current-induced artifacts with Archimedean spiral readout, the spiral readout in pCASL imaging was performed with 5 different peak gradient slew rate (S-max) values ranging from 70 to 500 T/m/s. The trajectory for each S-max was measured using a dynamic field camera and applied in a density-compensated gridding image reconstruction in addition to the nominal trajectory. The effect of the trajectory correction was assessed with perfusion-weighted (Delta M) images and proton-density-weighted images as well as cerebral blood flow (CBF) maps, obtained from 10 healthy volunteers. Results Blurring artifact on Delta M images was mitigated by the trajectory correction. CBF values on the left and right calcarine cortices showed no significant difference after correction. Also, the signal-to-noise ratio of Delta M images improved, on average, by 7.6% after correction (P ˂ .001). The greatest improvement of 12.1% on Delta M images was achieved with a spiral readout using S-max of 300400 T/m/s. Conclusion Eddy currents can cause spiral trajectory deviation, which leads to deformation of the CBF map even in cases of low value S-max. The trajectory correction for spiral-readout-based pCASL produces more reliable results for perfusion imaging. These results suggest that pCASL is feasible on C3T with high-performance gradients. | en_US |
dc.description.sponsorship | National Institute of Biomedical Imaging and Bioengineering, Grant/Award Number: U01 EB024450; NIH, Grant/Award Number: U01 EB024450 | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY | en_US |
dc.subject | compact 3T | en_US |
dc.subject | field camera | en_US |
dc.subject | high slew rate | en_US |
dc.subject | linear eddy current | en_US |
dc.subject | pCASL imaging | en_US |
dc.subject | spiral readout | en_US |
dc.title | The effect of spiral trajectory correction on pseudo-continuous arterial spin labeling with high-performance gradients on a compact 3T scanner | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 84 | - |
dc.identifier.doi | 10.1002/mrm.28110 | - |
dc.relation.page | 192-205 | - |
dc.relation.journal | MAGNETIC RESONANCE IN MEDICINE | - |
dc.contributor.googleauthor | Kang, Daehun | - |
dc.contributor.googleauthor | Yarach, Uten | - |
dc.contributor.googleauthor | In, Myung-Ho | - |
dc.contributor.googleauthor | Gray, Erin M. | - |
dc.contributor.googleauthor | Trzasko, Joshua D. | - |
dc.contributor.googleauthor | Jo, Hang Joon | - |
dc.contributor.googleauthor | Shu, Yunhong | - |
dc.contributor.googleauthor | Huston, John, III | - |
dc.contributor.googleauthor | Bernstein, Matt A. | - |
dc.relation.code | 2019002277 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF MEDICINE[S] | - |
dc.sector.department | DEPARTMENT OF MEDICINE | - |
dc.identifier.pid | hangjoonjo | - |
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