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Development and Characterization of An Unshielded PatLoc Gradient Coil for Human Head Imaging
Welz A.; Cocosco C.; Dewdney A.; Gallichan D.; Jia F.; Lehr H.; Liu Z. Y.; Post H.; Schmidt H.; Schultz G.; Testud F.; Weber H.; Witschey W.; Korvink J.; Hennig J.; Zaitsev M.
2013
发表期刊Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering
ISSNISBN/1552-5031
卷号43期号:4
摘要A cylindrical head gradient insert for human imaging with non-linear spatial encoding magnetic fields (SEMs) has been designed, optimized and successfully integrated with a modified 3T clinical MR system. This PatLoc (parallel acquisition technique using localized gradients) SEM coil uses SEMs that resemble second-order magnetic shim fields, but with much higher amplitude as well as the possibility for rapid switching. This work describes the optimization of a coil design and measurement methods to characterize its SEMs, induced self-eddy currents and concomitant fields. Magnetic field maps of the SEMs are measured and it is demonstrated that the induced self-eddy current magnetic fields are small and can be compensated. A method to measure concomitant fields is presented and those fields are compared to simulated data. Finally, in vivo human images acquired using the PatLoc system are presented and discussed. (c) 2013 Wiley Periodicals, Inc. Concepts Magn Reson Part B (Magn Reson Engineering) 43B: 111-125, 2013
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/40611
专题中科院长春光机所知识产出
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Welz A.,Cocosco C.,Dewdney A.,et al. Development and Characterization of An Unshielded PatLoc Gradient Coil for Human Head Imaging[J]. Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering,2013,43(4).
APA Welz A..,Cocosco C..,Dewdney A..,Gallichan D..,Jia F..,...&Zaitsev M..(2013).Development and Characterization of An Unshielded PatLoc Gradient Coil for Human Head Imaging.Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering,43(4).
MLA Welz A.,et al."Development and Characterization of An Unshielded PatLoc Gradient Coil for Human Head Imaging".Concepts in Magnetic Resonance Part B-Magnetic Resonance Engineering 43.4(2013).
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