An improved echo planar reconstruction method

1 February 1988

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science

Vol. 35 (1) , 744-748
https://doi.org/10.1109/23.12824

Abstract

In nuclear magnetic resonance (NMR) imaging, the echo planar method is used for fast scanning. Using conventional reconstruction methods, it requires twice as much data as Cartesian coordinate scanning due to sparse sampling on the edges of the Fourier plane. A noniterative reconstruction method is derived that requires only as much data as the Cartesian case. It operates by exactly interpolating bandlimited echo planar data into Cartesian coordinate data. In order to determine the loss in signal-to-noise ratio (SNR) due to faster operation, simulations are made comparing the new algorithm to a control algorithm that uses the conventional amount of data. It is found that with the new method scanning can be done twice as fast with 46% of the conventional SNR.

Keywords

This publication has 2 references indexed in Scilit:

A unified description of NMR imaging, data‐collection strategies, and reconstruction
Medical Physics, 1984
On NMR spin imaging by magnetic field modulation
Applied Physics A, 1980