{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,27]],"date-time":"2026-04-27T13:29:17Z","timestamp":1777296557401,"version":"3.51.4"},"reference-count":73,"publisher":"IMR Press","issue":"5","license":[{"start":{"date-parts":[[2023,8,9]],"date-time":"2023-08-09T00:00:00Z","timestamp":1691539200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100009797","name":"Barrow Neurological Foundation","doi-asserted-by":"crossref","id":[{"id":"10.13039\/100009797","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Sam & Peggy Grossman Family Foundation"},{"name":"Samuel P. Mandell Foundation"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Integr. Neurosci."],"abstract":"<jats:p>Background: Essential tremor (ET) is a common slowly-progressive neurologic disorder. It is predominantly characterized by kinetic tremors involving bilateral upper limbs. Although ET shares motor similarities with Parkinson disease (PD), there is no known relationship between ET and PD. Methods: We studied white matter differences between 17 ET and 68 PD patients using standard diffusion tensor imaging and fixel-based analysis (FBA). Diffusion magnetic resonance imaging data were acquired from two scanners (General Electric (GE) and Philips) with different numbers of diffusion directions. Fractional anisotropy maps were generated by the Oxford Centre for Functional Magnetic Resonance Imaging of the Brain (FMRIB) Software Library (FSL), and FBA was performed using MRtrix3 to obtain fiber density, fiber bundle, and fiber density bundle cross-section. Results: Compared with PD, significantly lower values of fiber density, fiber bundle, and fiber density bundle cross-section were found in the corpus callosum and left tapetum of the ET group. Additionally, significantly lower functional anisotropy values were found in the ET compared to the PD group, principally in the corpus callosum, corona radiata, and cingulum. In conclusion, differences in white matter integrity between ET and PD were observed by both FBA-based metrics and diffusion tensor imaging. Conclusions: Advanced diffusion-based metrics may provide a better understanding of the white matter microstructural characteristics in disparate motor-associated diseases with different underlying phenotypes, such as ET and PD.<\/jats:p>","DOI":"10.31083\/j.jin2205114","type":"journal-article","created":{"date-parts":[[2023,8,11]],"date-time":"2023-08-11T07:59:00Z","timestamp":1691740740000},"source":"Crossref","is-referenced-by-count":2,"title":["White Matter Microstructural Differences between Essential Tremor and Parkinson Disease, Evaluated Using Advanced Diffusion MRI Biomarkers"],"prefix":"10.31083","volume":"22","author":[{"given":"Maurizio","family":"Bergamino","sequence":"first","affiliation":[{"name":"Barrow Neuroimaging Innovation Center, Barrow Neurological Institute, Phoenix, AZ 85013, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sana","family":"Aslam","sequence":"first","affiliation":[{"name":"Muhammad Ali Parkinson Center, Barrow Neurological Institute, Phoenix, AZ 85013, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jacob J.","family":"Knittel","sequence":"first","affiliation":[{"name":"Creighton University School of Medicine - Phoenix, Phoenix, AZ 85012, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lea","family":"Alhilali","sequence":"first","affiliation":[{"name":"Department of Neuroradiology, Barrow Neurological Institute, Phoenix, AZ 85013, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ashley M.","family":"Stokes","sequence":"first","affiliation":[{"name":"Barrow Neuroimaging Innovation Center, Barrow Neurological Institute, Phoenix, AZ 85013, USA"},{"name":"Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ 85013, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"16242","published-online":{"date-parts":[[2023,8,9]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Algarni M, Fasano A. 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