Abstract #3899

The Spatial Resolution of Partial-Fourier-Accelerated EPI to Delineate a Submillimetre Voxel at 7T: Use of an Intensive Partial Fourier Factor

Seong Dae Yun¹, Avdo Celik¹, Michael Schöneck¹, and N. Jon Shah^1,2,3,4

¹Institute of Neuroscience and Medicine 4, INM-4, Forschungszentrum Juelich, Juelich, Germany, ²Institute of Neuroscience and Medicine 11, INM-11, JARA, Forschungszentrum Juelich, Juelich, Germany, ³JARA - BRAIN - Translational Medicine, Aachen, Germany, ⁴Department of Neurology, RWTH Aachen University, Aachen, Germany

Synopsis

The employment of the partial Fourier technique for submillimetre-resolution EPI has been demonstrated in many recent MR studies. However, the performance of the resulting spatial resolution has not yet been thoroughly investigated. This work aims to evaluate the spatial resolution of high-resolution EPI protocols configured with various partial Fourier factors at 7T. The obtained results show that the spatial resolution of partial-Fourier EPI is mainly determined by the number of actually sampled points (matrix size × PF-factor). Here, the use of an intensive PF-factor (5/8) for high spatial resolution was also demonstrated with a relatively large matrix size.

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