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eLearning

SINAPSE experts from around Scotland have developed ten online modules designed to explain medical imaging. They are freely available and are intended for non-specialists.


Edinburgh Imaging Academy at the University of Edinburgh offers the following online programmes through a virtual learning environment:

Neuroimaging for Research MSc/Dip/Cert

Imaging MSc/Dip/Cert

PET-MR Principles & Applications Cert

Applied Medical Image Analysis Cert

Online Short Courses

Between- and within-scanner variability in the CaliBrain study n-back cognitive task

Author(s): V. Gradin, V. E. Gountouna, G. Waiter, T. S. Ahearn, D. Brennan, B. Condon, I. Marshall, D. J. McGonigle, A. D. Murray, H. Whalley, J. Cavanagh, D. Hadley, K. Lymer, A. McIntosh, T. W. Moorhead, D. Job, J. Wardlaw, S. M. Lawrie, J. D. Steele

Abstract:
Psychiatric neuroimaging techniques are likely to improve understanding of the brain in health and disease, but studies tend to be small, based in one imaging centre and of unclear generalisability. Multicentre studies have great appeal but face problems if functional magnetic resonance imaging (fMRI) data from different centres are to be combined. Fourteen healthy volunteers had two brain scans on different days at three scanners. Considerable effort was first made to use similar scanning sequences and standardise task implementation across centres. The n-back cognitive task was used to investigate between- and within-scanner reproducibility and reliability. Both the functional imaging and behavioural results were in good accord with the existing literature. We found no significant differences in the activation/deactivation maps between scanners, or between repeat visits to the same scanners. Between- and within-scanner reproducibility and reliability was very similar. However, the smoothness of images from the scanners differed, suggesting that smoothness equalization might further reduce inter-scanner variability. Our results for the n-back task suggest it is possible to acquire fMRI data from different scanners which allows pooling across centres, when the same field strength scanners are used and scanning sequences and paradigm implementations are standardised. (C) 2010 Elsevier Ireland Ltd. All rights reserved.

Full version: Available here

Click the link to go to an external website with the full version of the paper


ISBN: 0925-4927
Publication Year: 2010
Periodical: Psychiatry Research-Neuroimaging
Periodical Number: 2
Volume: 184
Pages: 86-95
Author Address: Steele, JD Univ Dundee, Ninewells Hosp & Med Sch, Adv Intervent Serv, Area 7, Level 6,South Block, Dundee DD1 9SY, Scotland Univ Aberdeen, Dept Mental Hlth, Aberdeen AB9 1FX, Scotland Univ Dundee, Div Med Sci, Ctr Neurosci, Dundee DD1 9SY, Scotland Univ Edinburgh, Sch Mol & Clin Med, Div Psychiat, Edinburgh EH8 9YL, Midlothian, Scotland Univ Aberdeen, Aberdeen Biomed Imaging Ctr, Aberdeen AB9 1FX, Scotland NHS Glasgow, Dept Clin Phys, Glasgow, Lanark, Scotland Univ Edinburgh, Sch Mol & Clin Med, Dept Med Phys, Edinburgh EH8 9YL, Midlothian, Scotland Univ Cardiff, Sch Psychol, Cardiff, S Glam, Wales Univ Cardiff, Sch Biosci, Cardiff, S Glam, Wales Univ Glasgow, Dept Sackler Inst Psychobiol Res, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow, Dept Neurosci & Clin Radiol, Glasgow G12 8QQ, Lanark, Scotland Univ Edinburgh, Sch Mol & Clin Med, Div Clin Neurosci, Edinburgh EH8 9YL, Midlothian, Scotland