Longitudinal diffusion tensor imaging in dementia with Lewy bodies and Alzheimer's disease

Michael J. Firbank, Rosie Watson, Elijah Mak, Benjamin Aribisala, Robert Barber, Sean J. Colloby, Jiabao He, Andrew M. Blamire, John T. O'Brien

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Abstract

OBJECTIVE: Changes in the white matter of dementia with Lewy bodies (DLB) and Alzheimer's disease (AD) have been reported using diffusion weighted MRI, though few longitudinal studies have been done.

METHODS: We performed diffusion weighted MRI twice, a year apart on 23 AD, 14 DLB, and 32 healthy control subjects. Mean diffusivity (MD) and fractional anisotropy (FA) were calculated.

RESULTS: In AD, there were widespread regions where the longitudinal MD increase was greater than in controls, and small areas in the parietal and temporal lobes where it was greater in AD than DLB. In AD, decrease in brain volume correlated with increased MD. There were no significant differences in progression between DLB and controls.

CONCLUSIONS: In AD the white matter continues to degenerate during the disease process, whereas in DLB, changes in the white matter structure are a relatively early feature. Different mechanisms are likely to underpin changes in diffusivity.

Original languageEnglish
Pages (from-to)76-80
Number of pages5
JournalParkinsonism & Related Disorders
Volume24
Early online date6 Jan 2016
DOIs
Publication statusPublished - Mar 2016

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Lewy Body Disease
Diffusion Tensor Imaging
Dementia
Alzheimer Disease
Diffusion Magnetic Resonance Imaging
Lewy Bodies
Parietal Lobe
Anisotropy
Temporal Lobe
Longitudinal Studies
Healthy Volunteers
Brain
White Matter

Keywords

  • Dementia with Lewy bodies
  • Alzheimer's disease
  • DWI
  • MRI

Cite this

Firbank, M. J., Watson, R., Mak, E., Aribisala, B., Barber, R., Colloby, S. J., ... O'Brien, J. T. (2016). Longitudinal diffusion tensor imaging in dementia with Lewy bodies and Alzheimer's disease. Parkinsonism & Related Disorders, 24, 76-80. https://doi.org/10.1016/j.parkreldis.2016.01.003

Longitudinal diffusion tensor imaging in dementia with Lewy bodies and Alzheimer's disease. / Firbank, Michael J.; Watson, Rosie; Mak, Elijah; Aribisala, Benjamin; Barber, Robert; Colloby, Sean J.; He, Jiabao; Blamire, Andrew M.; O'Brien, John T.

In: Parkinsonism & Related Disorders, Vol. 24, 03.2016, p. 76-80.

Research output: Contribution to journalArticle

Firbank, MJ, Watson, R, Mak, E, Aribisala, B, Barber, R, Colloby, SJ, He, J, Blamire, AM & O'Brien, JT 2016, 'Longitudinal diffusion tensor imaging in dementia with Lewy bodies and Alzheimer's disease', Parkinsonism & Related Disorders, vol. 24, pp. 76-80. https://doi.org/10.1016/j.parkreldis.2016.01.003
Firbank, Michael J. ; Watson, Rosie ; Mak, Elijah ; Aribisala, Benjamin ; Barber, Robert ; Colloby, Sean J. ; He, Jiabao ; Blamire, Andrew M. ; O'Brien, John T. / Longitudinal diffusion tensor imaging in dementia with Lewy bodies and Alzheimer's disease. In: Parkinsonism & Related Disorders. 2016 ; Vol. 24. pp. 76-80.
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abstract = "OBJECTIVE: Changes in the white matter of dementia with Lewy bodies (DLB) and Alzheimer's disease (AD) have been reported using diffusion weighted MRI, though few longitudinal studies have been done.METHODS: We performed diffusion weighted MRI twice, a year apart on 23 AD, 14 DLB, and 32 healthy control subjects. Mean diffusivity (MD) and fractional anisotropy (FA) were calculated.RESULTS: In AD, there were widespread regions where the longitudinal MD increase was greater than in controls, and small areas in the parietal and temporal lobes where it was greater in AD than DLB. In AD, decrease in brain volume correlated with increased MD. There were no significant differences in progression between DLB and controls.CONCLUSIONS: In AD the white matter continues to degenerate during the disease process, whereas in DLB, changes in the white matter structure are a relatively early feature. Different mechanisms are likely to underpin changes in diffusivity.",
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AU - Mak, Elijah

AU - Aribisala, Benjamin

AU - Barber, Robert

AU - Colloby, Sean J.

AU - He, Jiabao

AU - Blamire, Andrew M.

AU - O'Brien, John T.

N1 - Acknowledgements The study was supported by the NIHR Biomedical Research Unit in Dementia and the Biomedical Research Centre awarded to Cambridge University Hospitals NHS Foundation Trust and the University of Cambridge, and the NIHR Biomedical Research Unit in Dementia and the Biomedical Research Centre awarded to Newcastle upon Tyne Hospitals NHS Foundation Trust and Newcastle University. Elijah Mak was in receipt of a Gates Cambridge PhD studentship.

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AB - OBJECTIVE: Changes in the white matter of dementia with Lewy bodies (DLB) and Alzheimer's disease (AD) have been reported using diffusion weighted MRI, though few longitudinal studies have been done.METHODS: We performed diffusion weighted MRI twice, a year apart on 23 AD, 14 DLB, and 32 healthy control subjects. Mean diffusivity (MD) and fractional anisotropy (FA) were calculated.RESULTS: In AD, there were widespread regions where the longitudinal MD increase was greater than in controls, and small areas in the parietal and temporal lobes where it was greater in AD than DLB. In AD, decrease in brain volume correlated with increased MD. There were no significant differences in progression between DLB and controls.CONCLUSIONS: In AD the white matter continues to degenerate during the disease process, whereas in DLB, changes in the white matter structure are a relatively early feature. Different mechanisms are likely to underpin changes in diffusivity.

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