Effect of slice thickness on brain magnetic resonance image texture analysis
| Autor: | T. Heinonen, Lara C V Harrison, P. Dastidar, Hannu Eskola, Sami Savio, Tiina Luukkaala, Seppo Soimakallio |
|---|---|
| Přispěvatelé: | University of Tampere |
| Rok vydání: | 2010 |
| Předmět: |
Adult
Male lcsh:Medical technology Multiple Sclerosis Wilcoxon signed-rank test Adolescent Image quality Kirurgia anestesiologia tehohoito radiologia - Surgery Anesthesiology Intensive Care Biomedical Engineering Texture (music) Statistics Nonparametric Biomaterials White matter Young Adult Image texture Intensive care medicine Image Processing Computer-Assisted Humans Radiology Nuclear Medicine and imaging Mathematics Radiological and Ultrasound Technology medicine.diagnostic_test Research Brain Discriminant Analysis Magnetic resonance imaging General Medicine Middle Aged Linear discriminant analysis Magnetic Resonance Imaging medicine.anatomical_structure lcsh:R855-855.5 Female Biomedical engineering |
| Zdroj: | BioMedical Engineering BioMedical Engineering OnLine, Vol 9, Iss 1, p 60 (2010) |
| ISSN: | 1475-925X |
| Popis: | Background The accuracy of texture analysis in clinical evaluation of magnetic resonance images depends considerably on imaging arrangements and various image quality parameters. In this paper, we study the effect of slice thickness on brain tissue texture analysis using a statistical approach and classification of T1-weighted images of clinically confirmed multiple sclerosis patients. Methods We averaged the intensities of three consecutive 1-mm slices to simulate 3-mm slices. Two hundred sixty-four texture parameters were calculated for both the original and the averaged slices. Wilcoxon's signed ranks test was used to find differences between the regions of interest representing white matter and multiple sclerosis plaques. Linear and nonlinear discriminant analyses were applied with several separate training and test sets to determine the actual classification accuracy. Results Only moderate differences in distributions of the texture parameter value for 1-mm and simulated 3-mm-thick slices were found. Our study also showed that white matter areas are well separable from multiple sclerosis plaques even if the slice thickness differs between training and test sets. Conclusions Three-millimeter-thick magnetic resonance image slices acquired with a 1.5 T clinical magnetic resonance scanner seem to be sufficient for texture analysis of multiple sclerosis plaques and white matter tissue. |
| Databáze: | OpenAIRE |
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