کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1806144 1025186 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Motion and distortion correction of skeletal muscle echo planar images
ترجمه فارسی عنوان
اصلاح حرکت و تحریف تصاویر مسطح اکو عضلات اسکلتی
کلمات کلیدی
تصویربرداری رزونانس مغناطیسی؛ عضله اسکلتی؛ تصویر برداری تشدید مغناطیسی مسطح اکو ؛ تصحیح حرکت؛ تصحیح اعوجاج؛ پیش پردازش تصویر
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی

This paper examines two artifacts facing researchers who use gradient echo (GRE) echo planar imaging (EPI) for time series studies of skeletal muscles in limbs. The first is through-plane blood flow during the acquisition, causing a vessel motion artifact that inhibits proper motion correction of the data. The second is distortion of EPI images caused by B0 field inhomogeneities. Though software tools are available for correcting these artifacts in brain EPI images, the tools do not perform well on muscle images. The severity of the two artifacts was described using image similarity measures, and the data was processed with both a conventional motion correction program and custom written tools. The conventional program did not perform well on the limb images, in fact significantly degrading image quality in some trials. Data is presented which proves that arterial pulsatile signal caused the impairment in motion correction. The new tools were shown to perform much better, achieving substantial motion correction and distortion correction of the muscle EPI images.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 34, Issue 6, July 2016, Pages 832–838
نویسندگان
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