کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10712868 | 1025279 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the strong field dependence and nonlinear response to gadolinium contrast agent of proton transverse relaxation rates in dairy cream
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: On the strong field dependence and nonlinear response to gadolinium contrast agent of proton transverse relaxation rates in dairy cream On the strong field dependence and nonlinear response to gadolinium contrast agent of proton transverse relaxation rates in dairy cream](/preview/png/10712868.png)
چکیده انگلیسی
Dairy cream, as a suspension of lipid droplets in water, is a potentially useful magnetic resonance imaging (MRI) phantom material and an interesting material for studying fundamental relaxation mechanisms. Here we report a strong increase in the transverse relaxation rates with field strength for both the water and lipid protons in dairy cream. Also, studies at 4.7 T reveal a nonlinear response of transverse relaxation rates with increasing concentration of a common gadolinium (Gd)-based contrast agent, including an initial decrease of water relaxation rates as measured with Hahn spin echoes at the lower Gd concentrations. The results are treated within the framework of a model in which the magnetic susceptibility difference between the lipid droplets and the aqueous phase plays the prominent role for transverse relaxation. Second-order polynomial fits of the water proton transverse relaxation rate dependence on field strength and on Gd concentration at 4.7 T provided experimental parameters from which model parameters are extracted and compared with expectations available from the literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 23, Issue 6, July 2005, Pages 757-764
Journal: Magnetic Resonance Imaging - Volume 23, Issue 6, July 2005, Pages 757-764
نویسندگان
Robert V. Mulkern, Yin P. Hung, Zaid Ababneh, Stephan E. Maier, Alan B. Packard, Mehmet C. Uluer, Daniel F. Kacher, Giulio Gambarota, Stephan Voss,