Publications de Mayur Narsude | EPFL Graph Search

High spatio-temporal resolution in functional MRI with 3D echo planar imaging using cylindrical excitation and a CAIPIRINHA undersampling pattern

Wietske Van der Zwaag, José Pedro Rebelo Ferreira Marques, Mayur Narsude, Daniel Gallichan, Olivier Benoit Thomas Reynaud

The combination of 3D echo planar imaging (3D-EPI) with a 2D-CAIPIRINHA undersampling scheme provides high flexibility in the optimization for spatial or temporal resolution. This flexibility can be increased further with the addition of a cylindrical exci ...

Wiley2018

Three-dimensional echo planar imaging with controlled aliasing: A sequence for high temporal resolution functional MRI

Rolf Gruetter, Wietske Van der Zwaag, José Pedro Rebelo Ferreira Marques, Mayur Narsude, Daniel Gallichan

Purpose In this work, we combine three-dimensional echo planar imaging (3D-EPI) with controlled aliasing to substantially increase temporal resolution in whole-brain functional MRI (fMRI) while minimizing geometry-factor (g-factor) losses. Theory and Metho ...

Wiley-Blackwell2016

Comparison of an 8-Channel and a 32-Channel Coil for High-Resolution fMRI at 7 T

Wietske Van der Zwaag, Mayur Narsude, Jana Darulová, Roy Salomon

Multi-channel receive array rf-coils have become widely available for fMRI. The improved SNR and possibility of acquisition acceleration through parallel imaging are especially beneficial for high-resolution studies. In this study, an 8-channel and a 32-ch ...

Springer2014

Improved temporal resolution for functional studies with reduced number of segments with three-dimensional echo planar imaging

Rolf Gruetter, Wietske Van der Zwaag, Tobias Kober, José Pedro Rebelo Ferreira Marques, Mayur Narsude

PURPOSE: To introduce a new k-space traversal strategy for segmented three-dimensional echo planar imaging (3D EPI) that encodes two partitions per radiofrequency excitation, effectively reducing the number excitations used to acquire a 3D EPI dataset by h ...

Wiley-Blackwell2014

High Temporal Resolution Functional Magnetic Resonance Imaging at 7 Tesla

Mayur Narsude

Speed has always been a critical consideration in magnetic resonance imaging (MRI), promising dramatic gains in imaging speed, a reduction in motion and susceptibility artifacts, and ultimately increased throughput for clinical studies. This thesis present ...

EPFL2014

Superior GRAPPA reconstruction with reduced g-factor noise using 2D CAIPIRINHA for 3D EPI

Rolf Gruetter, José Pedro Rebelo Ferreira Marques, Mayur Narsude, Daniel Gallichan

Efficient GRAPPA or SENSE reconstruction is largely dependent on coil geometry in the direction in which phase encoding steps reduction is performed during partially parallel acquisition. In this study we demonstrate the ability to perform a 2D CAIPIRINHA ...

2013

PACEUP-3DEPI: A highly Accelerated 3D-EPI Sequence for fMRI at 7T

Rolf Gruetter, Wietske Van der Zwaag, Tobias Kober, José Pedro Rebelo Ferreira Marques, Mayur Narsude

2012

Mapping inversion efficiencies of adiabatic pulses at 7T

Rolf Gruetter, Florent Eggenschwiler, José Pedro Rebelo Ferreira Marques, Mayur Narsude

2011