## Abstract Using a keyhole technique, it is shown that the data acquisition rate of gradient‐echo imaging for functional MRI (fMRI) studies can be increased substantially. The resulting enhancement of the temporal resolution of fMRIs was accomplished without modifying the hardware of a conventiona
Improvement of spatial resolution of keyhole effect images
✍ Scribed by Claudia Oesterle; Jürgen Hennig
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 808 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0740-3194
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
An algorithm is proposed which improves the spatial resolution of difference or effect images acquired with a keyhole sampling strategy. This new reconstruction algorithm uses a priori information about sharp structures in the observed signal changes from a high resolution reference scan. The potential of this algorithm even being able to deal with noisy effect images is illustrated by application to functional MRI data.
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