Research Article

Comparison Global Brain Volume Ratios on Alzheimer’s Disease Using 3D T1 Weighted MR Images

Number: 18 April 15, 2020
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Comparison Global Brain Volume Ratios on Alzheimer’s Disease Using 3D T1 Weighted MR Images

Abstract

Alzheimer's Disease is a cause of dementia that starts with the loss of cognitive functions. The degeneration that starts in memory-related areas in the brain spreads to other regions as the disease progresses. Volumetric losses occurring in the brain can be monitored with high resolution 3D T1-weighted magnetic resonance images. The interpretation of these images is carried out by radiologists in hospitals. However, since the voxel intensity transitions of the brain regions are not clear in magnetic resonance images, computer-aided numerical methods are needed. These methods can perform pre-processing, post-processing, segmentation and volume calculation on magnetic resonance images. In this study, gray matter, white matter, cerebrospinal fluid, total intracranial volume, parenchyma, and lateral ventricle global volumes were calculated for 70 Alzheimer Patients and 70 Normal Control 3D T1-weighted magnetic resonance images taken from Open Access Series of Imaging Studies database. SPM8 and MRIcro programs, ALVIN and VBM8 libraries were used. Since the numerical methods used are found in different programs and libraries, a model is proposed which combinations should be used. Volumetric results are relative due to the different head sizes in each person. Therefore, the problem of relativity should be eliminated by proportioning each volume value with another volume value. Twenty different metrics of the brain were obtained by summing and dividing the six global volume regions obtained in different combinations. Using these values, it was determined whether there was a statistically significant difference between two groups by independent samples t-test. The performance of the numerical methods and the statistical results of twenty metrics obtained from global brain volumes were discussed. After measurements and evaluations, it was observed that the ratio of cerebrospinal fluid volume to gray matter volume was an important marker in the differential diagnosis of the disease.

Keywords

References

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Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Publication Date

April 15, 2020

Submission Date

February 3, 2020

Acceptance Date

March 17, 2020

Published in Issue

Year 2020 Number: 18

APA
Öziç, M. Ü., & Özşen, S. (2020). Comparison Global Brain Volume Ratios on Alzheimer’s Disease Using 3D T1 Weighted MR Images. Avrupa Bilim Ve Teknoloji Dergisi, 18, 599-606. https://doi.org/10.31590/ejosat.697446

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