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DTI of Neurodegenerative Disorders
Published in Andrei I. Holodny, Functional Neuroimaging, 2019
Sumei Wang, John H. Woo, Elias R. Melhem
WM tracts of the temporal Stern can be evaluated independently by using diffusion tensor tractography. Impairment of the uncinate fasciculus and inferior occipitofrontal fasciculus has been reported in AD patients, while Meyer’s loop, which was included as a control, was not affected (Fig. 3) (62).
Non-Synonyms (Similar-Sounding)
Published in Terence R. Anthoney, Neuroanatomy and the Neurologic Exam, 2017
Superior occipitofrontal fasciculus (B&K, p. 246): A bundle of long cerebral association fibers, including some that connect frontal cortex and occipital cortex. It is more medial than the “superior longitudinal fasciculus” (see above), lying, for example, superior to the neostriatum. See, also, D: Occipitofrontal fasciculus.
Late-onset psychosis and very-late-onset-schizophrenia-like-psychosis: an updated systematic review
Published in International Review of Psychiatry, 2019
Y. N. Suen, Stephanie M. Y. Wong, Christy L. M. Hui, Sherry K. W. Chan, Edwin H. M. Lee, Wing C. Chang, Eric Y. H. Chen
As for VLOSLP, some researchers previously found their FA and mean diffusivity measures to be not different from HC (using DTI) on the uncinate, superior longitudinal fasciculus, inferior occipitofrontal fasciculi, and the cingulum (Jones et al., 2005). They thus argued that psychosis with a ‘very late onset’ cannot be attributed to focal white-matter pathology within these fibre tracts which some had raised. In comparison with long-stay EOS inpatients, computed tomography scans showed that VLOSLP patients had a greater cerebellar ventral-to-brain ratio (VBR; i.e. more significant cerebellar atrophy) but with no differences in their VBR of the frontal horn, levels of cortical atrophy, or periventricular white matter leukoencephalopathy (Barak et al., 2002).