fMRI and Voxel-based Morphometry in Detection of Early Stages of Alzheimer's Disease

Andrey V. Sokolov, Sergey V. Vorobyev, Aleksandr Yu. Efimtcev, Viacheslav S. Dekan, Gennadiy E. Trufanov, Vladimir Yu. Lobzin, Vladimir A. Fokin

Abstract

Alzheimer’s disease (AD) is the most common form of dementia in older adults. Loss of memory is the usual first symptom and different brain regions are involved to this pathological process. The aim of the study was to investigate the organization of cortical areas responsible for visual memory and determine correlation between memory impairment and atrophy of memory specific brain regions in early stages of AD. Voxel-based MR-morphometry was used to evaluate brain atrophy and functional MRI was used to detect specific brain regions responsible to visual memory task in patients with Alzheimer's disease and in control group. FMRI was performed on Siemens Magnetom Symphony (1.5 T ) with the use of Blood Oxygenation Level Dependent technique (BOLD), based on distinctions of magnetic properties of hemoglobin. For test stimuli we used blocks of 12 not related images for "Baseline" and 12 images with 6 presented before for "Active". Stimuli were presented 3 times with reduction of repeated images to 4 and 2. For functional and morthometric data post-processing we used SPM8. Patients with Alzheimer's disease showed less activation in hippocampal formation (HF) region and parahippocampal gyrus then the control group (p<0.05). The study also showed reduced activation in posterior cingulate cortex (p<0.001). Voxel-based morphometry showed significant atrophy of grey matter in Alzheimer’s disease patients, especially of both temporal lobes (fusiform and parahippocampal gyri); frontal lobes (posterior cingulate and superior frontal gyri). The study showed correlation between memory impairment and atrophy of memory specific brain regions of frontal and medial temporal lobes. Reduced activation in hippocampal formation and parahippocampal gyri, in posterior cingulate gyrus in patients with Alzheimer's disease correlates to significant atrophy of these regions, detected by voxel-based morphometry. The use of functional MRI and voxel-based morphometry provides the way to find alterations in brain function on early stages of AD before the development of significant irreversible structural damage.

References

  1. Bassett, S.S., 2006. Familial risk for Alzheimer's disease aters fMRI activation patterns. Brain 2006, 129, p. 1229-1239.
  2. Frisoni G.B., 2008. The pilot European Alzheimer's Disease Neuroimaging Initiative of the European Alzheimer's Disease Consortium. Alzheimers Dement. 2008. 4(4):255-64.
  3. Golby, A. et al, 2005. Memory encoding in Alzheimer's disease: an fMRI study of explicit and implicit memory. Brain. 2005, 128, P. 773-787.
  4. Karas G.B., 2004. Global and local gray matter loss in mild cognitive impairment and Alzheimer's disease. F.Neuroimage. 2004. 23(2):708-16.
  5. Lobzin, V.Yu., 2013. Voxel-based morphometry in Alzheimer's disease and vascular cognitive impairment. Vestnik Rossiiskoi Voenno-medicinskoi Academii. 2013. ? 3 (43). P. 48-54.
  6. Luria A., 1962. Supreme human cortical functions. Moscow, MGU, P 402.
  7. Pihlajamaki, M., Sperling R.A., 2008. FMRI:use in early Alzheimer's disease and in clinical trials. Future Neurology. 2008; 3(4): p. 409-421.
  8. Odinak, M.M., Vorobyev S.V., 2011. Functional magnetic resonance imaging as estimation method of state cognitive functions. Vestnik Rossiiskoi Voennomedicinskoi Academii. 2011. ? 4 (36). P. 7-13.
  9. Talairach, J., 1988. Co-planar stereotaxic atlas of the human brain. Thieme, New York, 1988. - P. 122.
  10. Vasconcelos, L.G., 2011. Voxel-based morphometry findings in Alzheimer's disease: neuropsychiatric symptoms and disability correlations - preliminary results. Clinics. 2011. Vol.66, ? 6. P. 1045-1050.
  11. Zhang N., 2011. An MRI brain atrophy and lesion index to assess the progression of structural changes in Alzheimer's disease, mild cognitive impairment, and normal aging: a follow-up study. J Alzheimers Dis. 2011; 26 Suppl 3: 359-67.
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Paper Citation


in Harvard Style

Sokolov A., Vorobyev S., Efimtcev A., Dekan V., Trufanov G., Lobzin V. and Fokin V. (2017). fMRI and Voxel-based Morphometry in Detection of Early Stages of Alzheimer's Disease . In Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 2: BIOIMAGING, (BIOSTEC 2017) ISBN 978-989-758-215-8, pages 67-71. DOI: 10.5220/0006109600670071


in Bibtex Style

@conference{bioimaging17,
author={Andrey V. Sokolov and Sergey V. Vorobyev and Aleksandr Yu. Efimtcev and Viacheslav S. Dekan and Gennadiy E. Trufanov and Vladimir Yu. Lobzin and Vladimir A. Fokin},
title={fMRI and Voxel-based Morphometry in Detection of Early Stages of Alzheimer's Disease},
booktitle={Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 2: BIOIMAGING, (BIOSTEC 2017)},
year={2017},
pages={67-71},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006109600670071},
isbn={978-989-758-215-8},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 2: BIOIMAGING, (BIOSTEC 2017)
TI - fMRI and Voxel-based Morphometry in Detection of Early Stages of Alzheimer's Disease
SN - 978-989-758-215-8
AU - Sokolov A.
AU - Vorobyev S.
AU - Efimtcev A.
AU - Dekan V.
AU - Trufanov G.
AU - Lobzin V.
AU - Fokin V.
PY - 2017
SP - 67
EP - 71
DO - 10.5220/0006109600670071