DTI and Bold MR Imaging
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Diffusion tensor imaging (DTI) is a new technique that allows the mapping of mean water diffusion in fibrous tissues. It depends on a property, known as diffusion anisotropy, which is based in the fact that water molecules diffuse more easily in the direction aligned with internal structure and with difficulty as it moves perpendicular to the preferred direction. The acquired data enable the reconstruction of 3D images of white matter tracts (tractography) and the measurement of fractional anisotropy, which reflects the anisotropy of the analyzed structure.
KeywordsAmyotrophic Lateral Sclerosis Fractional Anisotropy Alzheimer Disease Diffusion Tensor Imaging White Matter Tract
- Lehéricy S, Biondi A, Sourour N, Vlaicu M, du Montcel ST, Cohen L, Vivas E, Capelle L, Faillot T, Casasco A, Le Bihan D, Marsault C (2002) Arteriovenous brain malformations: Is functional MR imaging reliable for studying language reorganization in patients? Initial observations. Radiology 223(3):672–682PubMedCrossRefGoogle Scholar
- Okada T, Miki Y, Kikuta K, Mikuni N, Urayama S, Fushimi Y, Yamamoto A, Mori N, Fukuyama H, Hashimoto N, Togashi K (2007) Diffusion tensor fiber tractography for arteriovenous malformations: quantitative analyses to evaluate the corticospinal tract and optic radiation. AJNR Am J Neuroradiol 28(6):1107–1113PubMedCrossRefGoogle Scholar
- Osborn AG (2004) Diagnostic imaging: brain. Elsevier-Amirsys, Salt Lake City. ISBN ISBN-13:9780721629056Google Scholar
- Price SJ, Jena R, Burnet NG, Hutchinson PJ, Dean AF, Peña A, Pickard JD, Carpenter TA, Gillard JH (2006) Improved delineation of glioma margins and regions of infiltration with the use of diffusion tensor imaging: an image-guided biopsy study. AJNR Am J Neuroradiol 27(9):1969–1974PubMedGoogle Scholar