کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1808131 | 1025330 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of static and radiofrequency magnetic field inhomogeneity in ultra-high field magnetic resonance imaging
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
To characterize the severe static (B0) and radiofrequency (B1) magnetic field inhomogeneity in ultra-high field (≥7 T) magnetic resonance imaging, gradient echo (GE) and spin echo (SE) images of in vivo and postmortem human brains were acquired. The B0 and B1 inhomogeneity were experimentally mapped and/or numerically simulated, and correlated with the image artifacts. Whereas B0 inhomogeneity affects predominantly GE images near air/tissue interfaces, B1 inhomogeneity affects SE images more severely and shows nonintuitive patterns. Mapping of the B0 and B1 inhomogeneity is important in characterizing image artifacts. This will help develop better B0 and B1 inhomogeneity correction methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 24, Issue 2, February 2006, Pages 103–112
Journal: Magnetic Resonance Imaging - Volume 24, Issue 2, February 2006, Pages 103–112
نویسندگان
Trong-Kha Truong, Donald W. Chakeres, David Q. Beversdorf, Douglas W. Scharre, Petra Schmalbrock,