A Pulse Sequence for Improving MRI Images

Improving SNR as well as resolution simultaneously is a challenging problem in MRI. In normal EPI sequences, a long data acquisition time not only excessively attenuates the signal obtained from the sequence but also alters its resolution depending on the adjustment of the sequence. In this paper, we address this issue by designing a pulse sequence for GE-EPI (Gradient Echo - Echo Planar Imaging). Instead of starting acquisition from the maximum point in K-Space, the acquisition point is selected according to the requirement. For example, if good SNR is required than the acquisition point selected is close to zero so as to preserve the DC component.