Edden, Richard A.E., Puts, Nicolaas A.J., Harris, Ashley D., Barker, Peter B. and Evans, Christopher John ![]() |
Abstract
Purpose: The purpose of this study is to describe the Gannet toolkit for the quantitative batch analysis of gamma-aminobutyric acid (GABA) -edited MRS data. Materials and Methods: Using MEGA-PRESS editing and standard acquisition parameters, four MEGA-PRESS spectra were acquired in three brain regions in 10 healthy volunteers. These 120 datasets were processed without user intervention with Gannet, a Matlab-based tool that takes raw time-domain data input, processes it to generate the frequency-domain edited spectrum, and applies a simple modeling procedure to estimate GABA concentration relative to the creatine or, if provided, the unsuppressed water signal. A comparison of four modeling approaches is also presented. Results: All data were successfully processed by Gannet. Coefficients of variation across subjects ranged from 11% for the occipital region to 17% for the dorsolateral prefrontal region. There was no clear difference in fitting performance between the simple Gaussian model used by Gannet and the other more complex models presented. Conclusion: Gannet, the GABA Analysis Toolkit, can be used to process and quantify GABA-edited MRS spectra without user intervention.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Cardiff University Brain Research Imaging Centre (CUBRIC) Medicine Psychology |
Subjects: | R Medicine > R Medicine (General) |
Publisher: | John Wiley & Sons |
ISSN: | 1053-1807 |
Date of Acceptance: | 28 September 2013 |
Last Modified: | 31 Oct 2022 09:02 |
URI: | https://orca.cardiff.ac.uk/id/eprint/79617 |
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