Key result
Partial echo MRI measures 3D velocity fields in human vessels while reducing severe image artifacts.
A partial echo signal acquisition technique in MRI can reduce artifacts and allow for the measurement of complex 3D blood flow patterns in human vessels.
May enable artifact-reduced 3D vascular flow MRI; leaves open clinical translation pending in vivo validation.
The quantitative assessment of velocity fields can help to get a better understanding of complicated flow patterns which are considered to play an important role in atherosclerotic plaque formation. Magnetic resonance imaging offers the possibility of non-invasive visualization and quantification of blood flow in many larger human arteries and veins. However, the assessment of complex blood flow patterns with conventional gradient echo flow sequences suffer from severe image artifacts. In order to overcome these problems, a partial echo signal acquisition technique which strongly reduces such artifacts may be applied. Using this technique, three dimensional velocity fields were measured in a bifurcation model, in the human carotid bifurcation and in the human aorta, right downstream of the aortic valve.
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Botnar et al. (1996) studied this question. Partial echo signal acquisition technique in MRI vs. Conventional gradient echo flow sequences was evaluated on Three dimensional velocity fields measurement. A partial echo signal acquisition technique in magnetic resonance imaging successfully measured three-dimensional velocity fields in human vessels while reducing severe image artifacts.
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