نتایج جستجو برای: inversion time

تعداد نتایج: 1927792  

Journal: :Geophysical Journal International 1988

سحرخیز, حدیثه, قره آغاجی, ناهیده, نظرپور, محمود,

Background and purpose: In MRI the concentration of contrast agent is indirectly measured from signal intensity (SI). It is important to find the maximum linear relationship between SI and concentration of the iron oxide nanoparticles for perfusion measurement. The aim of this study was to investigate the effect of inversion time on SI and the maximum linear relationship between SI and concentr...

  Background :Inversion recovery (IR) pulse sequences can generate T1-weighted images with a different range of inversion time (TI) to suppress or null the signal intensity (SI) for a specified tissue. In this study, we aimed to investigate the effect of TI values on the concentration of the contrast agent, which leads to a minimum signal intensity, using an inversion recovery T1-weighted 3-dim...

Journal: :Journal of Geophysics and Engineering 2020

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