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Cho, Hyungjoon
Biomedical Imaging Science and Engineering Lab(BISE)
Research Interests
  • Imaging tumor microenvironments, susceptibility contrast based MR structural imaging, ultra fast acquisitions of dynamic MR, algorithm/Hardware development for magnetic particle imaging

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Pulse error compensating symmetric magic-echo trains

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Title
Pulse error compensating symmetric magic-echo trains
Author
Boutis, GSCappellaro, PCho, HyungjoonRamanathan, CCory, DG
Keywords
Dipolar coupling; Finite pulse errors; Line narrowing; Magic-echo; Time-reversal
Issue Date
2003-04
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF MAGNETIC RESONANCE, v.161, no.2, pp.132 - 137
Abstract
We present improved line-narrowing sequences for dipolar coupled spin systems, based on a train of magic-echoes which are compensated for the effects of finite pulse widths and utilize symmetry properties of supercycles. Sequences are introduced for spectroscopy and imaging by proper choice of a phase alternating scheme. Using a 16 pulse time-suspension magic-echo cycle, the highest level of line-narrowing achieved was 2.7 Hz for the [100] direction of a single crystal of calcium fluoride, a reduction in linewidth by 4 orders of magnitude.
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DOI
10.1016/S1090-7807(03)00010-7
ISSN
1090-7807
Appears in Collections:
BME_Journal Papers
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