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Media type:
E-Article
Title:
Measurement of small inter‐scan fluctuations in voxel dimensions in magnetic resonance images using registration
Contributor:
Lemieux, Louis;
Barker, Gareth J.
Published:
Wiley, 1998
Published in:
Medical Physics, 25 (1998) 6, Seite 1049-1054
Language:
English
DOI:
10.1118/1.598288
ISSN:
0094-2405;
2473-4209
Origination:
Footnote:
Description:
We present a method to estimate fluctuations in voxel dimensions in MR images. In the proposed method images of a standard test object are acquired serially and registered to an initial dataset. We present the results of experiments where changes in voxel dimensions between 0.1% and 2% were prescribed and measured with an accuracy of 0.02%. The method can be integrated as part of a standard MRI Quality Assurance program and may also be useful to correct for inter‐scan variability introduced by fluctuations in gradient performance.